Release v0.3.1

README.md

@@ -99,6 +99,13 @@ TMDB-backed metadata enrichment requires `TMDB_API_KEY` to be set in the environ
 
 ## Version History
 
+### 0.3.1
+
+- debug mode screen titles now append the active Textual screen class name, making screen-specific troubleshooting easier during inspect and edit flows
+- `--cut` again works as a combined flag/option: omitted disables cutting, bare `--cut` applies the default `60,180`, and explicit duration or `START,DURATION` values stay supported
+- H.265 unmux commands no longer force an invalid `-f h265` output format, keeping ffmpeg copy extraction aligned with the required Annex B bitstream filter
+- H.264 encoding now falls back from `libx264` to `libopenh264` with a warning when needed, and the test fixtures use the same encoder fallback so the suite remains portable across ffmpeg builds
+
 ### 0.3.0
 
 - inspect and edit screens now refresh nested track and pattern changes more reliably, with inspect-mode tables aligned to the target pattern view shown in the differences pane

pyproject.toml

@@ -1,7 +1,7 @@
 [project]
 name = "ffx"
 description = "FFX recoding and metadata managing tool"
-version = "0.3.0"
+version = "0.3.1"
 license = {file = "LICENSE.md"}
 dependencies = [
   "requests",

src/ffx/cli.py

@@ -252,9 +252,15 @@ def buildRenameTargetFilename(
 @click.pass_context
 @click.option('--language', 'app_language', type=str, default='', help='Set application language')
 @click.option('--database-file', type=str, default='', help='Path to database file')
+@click.option(
+    '--debug',
+    is_flag=True,
+    default=False,
+    help='Enable debug-only TUI diagnostics such as the log pane',
+)
 @click.option('-v', '--verbose', type=int, default=0, help='Set verbosity of output')
 @click.option("--dry-run", is_flag=True, default=False)
-def ffx(ctx, app_language, database_file, verbose, dry_run):
+def ffx(ctx, app_language, database_file, debug, verbose, dry_run):
     """FFX"""
 
     ctx.obj = {}
@@ -274,6 +280,7 @@ def ffx(ctx, app_language, database_file, verbose, dry_run):
     )
     set_current_language(resolvedLanguage)
     ctx.obj['language'] = resolvedLanguage
+    ctx.obj['debug'] = bool(debug)
 
     if ctx.invoked_subcommand in LIGHTWEIGHT_COMMANDS:
         ctx.obj['dry_run'] = dry_run
@@ -287,6 +294,7 @@ def ffx(ctx, app_language, database_file, verbose, dry_run):
 
     ctx.obj['dry_run'] = dry_run
     ctx.obj['verbosity'] = verbose
+    ctx.obj['debug'] = bool(debug)
     ctx.obj['language'] = resolve_application_language(
         cli_language=app_language,
         config_language=ctx.obj['config'].getLanguage(),
@@ -391,6 +399,20 @@ def runScriptWrapper(ctx, scriptPath, missingDescription, commandArgs):
     ctx.exit(completed.returncode)
 
 
+def runTuiApp(ctx) -> None:
+    from ffx.ffx_app import FfxApp
+    from ffx.logging_utils import set_ffx_console_logging_enabled
+
+    logger = ctx.obj.get('logger')
+    set_ffx_console_logging_enabled(logger, enabled=False)
+
+    try:
+        app = FfxApp(ctx.obj)
+        app.run()
+    finally:
+        set_ffx_console_logging_enabled(logger, enabled=True)
+
+
 @ffx.command(name='setup')
 @click.pass_context
 @click.option('--check', is_flag=True, default=False, help='Only verify bundle-setup readiness')
@@ -527,14 +549,11 @@ def inspect(ctx, shift, filenames):
     if len(filenames) != 1:
         raise click.ClickException("Inspect without --shift requires exactly one filename.")
 
-    from ffx.ffx_app import FfxApp
-
     ctx.obj['command'] = 'inspect'
     ctx.obj['arguments'] = {}
     ctx.obj['arguments']['filename'] = filenames[0]
 
-    app = FfxApp(ctx.obj)
+    runTuiApp(ctx)
-    app.run()
 
 
 @ffx.command()
@@ -544,8 +563,6 @@ def edit(ctx, filename):
     if not os.path.isfile(filename):
         raise click.ClickException(f"File not found: {filename}")
 
-    from ffx.ffx_app import FfxApp
-
     ctx.obj['command'] = 'edit'
     ctx.obj['arguments'] = {'filename': filename}
     ctx.obj['use_pattern'] = False
@@ -554,8 +571,7 @@ def edit(ctx, filename):
     ctx.obj['apply_metadata_normalization'] = True
     ctx.obj['resource_limits'] = ctx.obj.get('resource_limits', {})
 
-    app = FfxApp(ctx.obj)
+    runTuiApp(ctx)
-    app.run()
 
 
 @ffx.command()
@@ -615,21 +631,24 @@ def rename(ctx, paths, prefix, season, suffix, dry_run):
 
 
 def getUnmuxSequence(trackDescriptor: TrackDescriptor, sourcePath, targetPrefix, targetDirectory = ''):
+    from ffx.track_codec import TrackCodec
+    from ffx.track_type import TrackType
 
     # executable and input file
     commandTokens = list(FFMPEG_COMMAND_TOKENS) + ['-i', sourcePath]
 
     trackType = trackDescriptor.getType()
+    trackCodec = trackDescriptor.getCodec()
 
     targetPathBase = os.path.join(targetDirectory, targetPrefix) if targetDirectory else targetPrefix
 
     # mapping
-    commandTokens += ['-map',
+    commandTokens += ['-map', f"0:{trackType.indicator()}:{trackDescriptor.getSubIndex()}"]
-            f"0:{trackType.indicator()}:{trackDescriptor.getSubIndex()}",
-            '-c',
-            'copy']
 
-    trackCodec = trackDescriptor.getCodec()
+    if trackType == TrackType.VIDEO and trackCodec == TrackCodec.H265:
+        commandTokens += ['-c:v', 'copy', '-bsf:v', 'hevc_mp4toannexb']
+    else:
+        commandTokens += ['-c', 'copy']
 
     # output format
     codecFormat = trackCodec.format()
@@ -837,12 +856,8 @@ def cropdetect(ctx,
 @click.pass_context
 
 def shows(ctx):
-    from ffx.ffx_app import FfxApp
-
     ctx.obj['command'] = 'shows'
-
+    runTuiApp(ctx)
-    app = FfxApp(ctx.obj)
-    app.run()
 
 
 def checkUniqueDispositions(context, mediaDescriptor: MediaDescriptor):
@@ -943,7 +958,6 @@ def checkUniqueDispositions(context, mediaDescriptor: MediaDescriptor):
     metavar="DURATION|START,DURATION",
     is_flag=False,
     flag_value=DEFAULT_CUT_OPTION_VALUE,
-    default=None,
     callback=normalizeCutOption,
     help=CUT_OPTION_HELP,
 )

src/ffx/confirm_screen.py

@@ -62,6 +62,13 @@ class ConfirmScreen(Screen):
         yield build_screen_log_pane()
         yield Footer()
 
+
+    def on_mount(self):
+
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
+
     def on_button_pressed(self, event: Button.Pressed) -> None:
         if event.button.id == "confirm_button":
             self.dismiss(True)

src/ffx/constants.py

@@ -1,4 +1,4 @@
-VERSION='0.3.0'
+VERSION='0.3.1'
 DATABASE_VERSION = 3
 
 DEFAULT_QUALITY = 32

src/ffx/ffx_app.py

@@ -4,7 +4,7 @@ from .i18n import set_current_language, t
 from .shows_screen import ShowsScreen
 from .inspect_details_screen import InspectDetailsScreen
 from .media_edit_screen import MediaEditScreen
-from .screen_support import toggle_screen_log_pane
+from .screen_support import configure_screen_log_handler, set_screen_log_pane_enabled
 
 
 class FfxApp(App):
@@ -14,7 +14,6 @@ class FfxApp(App):
     BINDINGS = [
         ("q", "quit()", t("Quit")),
         ("h", "switch_mode('help')", t("Help")),
-        ("l", "toggle_log_pane", t("Log")),
     ]
 
 
@@ -24,6 +23,13 @@ class FfxApp(App):
         # Data 'input' variable
         self.context = context
         set_current_language(self.context.get("language"))
+        debug_mode = bool(self.context.get("debug", False))
+        set_screen_log_pane_enabled(debug_mode)
+        configure_screen_log_handler(
+            self.context.get("logger"),
+            self,
+            enabled=debug_mode,
+        )
 
 
     def on_mount(self) -> None:
@@ -43,6 +49,3 @@ class FfxApp(App):
     def getContext(self):
         """Data 'output' method"""
         return self.context
-
-    def action_toggle_log_pane(self) -> None:
-        toggle_screen_log_pane(self.screen)

src/ffx/ffx_controller.py

@@ -1,4 +1,5 @@
-import os, click
+import os, click, subprocess
+from functools import lru_cache
 from logging import Logger
 
 from ffx.media_descriptor_change_set import MediaDescriptorChangeSet
@@ -61,6 +62,41 @@ class FfxController():
                                                 sourceMediaDescriptor)
 
         self.__logger: Logger = context['logger']
+        self.__warnedH264Fallback = False
+
+
+    @staticmethod
+    @lru_cache(maxsize=None)
+    def isFfmpegEncoderAvailable(encoderName: str) -> bool:
+        completed = subprocess.run(
+            ["ffmpeg", "-encoders"],
+            capture_output=True,
+            text=True,
+            check=False,
+        )
+        if completed.returncode != 0:
+            return False
+
+        resolvedEncoderName = str(encoderName).strip()
+
+        for line in completed.stdout.splitlines():
+            if not line.startswith(" "):
+                continue
+
+            tokens = line.split(maxsplit=2)
+            if len(tokens) >= 2 and tokens[1] == resolvedEncoderName:
+                return True
+
+        return False
+
+
+    @classmethod
+    def getSupportedSoftwareH264Encoder(cls) -> str | None:
+        if cls.isFfmpegEncoderAvailable("libx264"):
+            return "libx264"
+        if cls.isFfmpegEncoderAvailable("libopenh264"):
+            return "libopenh264"
+        return None
 
 
     def executeCommandSequence(self, commandSequence):
@@ -79,11 +115,28 @@ class FfxController():
 
     # -c:v libx264 -preset slow -crf 17
     def generateH264Tokens(self, quality, subIndex : int = 0):
+        h264Encoder = self.getSupportedSoftwareH264Encoder()
 
+        if h264Encoder == "libx264":
             return [f"-c:v:{int(subIndex)}", 'libx264',
                     "-preset", "slow",
                     '-crf', str(quality)]
 
+        if h264Encoder == "libopenh264":
+            if not self.__warnedH264Fallback:
+                self.__logger.warning(
+                    "libx264 encoder unavailable; falling back to libopenh264 for H.264 encoding."
+                )
+                self.__warnedH264Fallback = True
+
+            return [f"-c:v:{int(subIndex)}", 'libopenh264',
+                    '-pix_fmt', 'yuv420p']
+
+        raise click.ClickException(
+            "H.264 encoding requested but no supported software H.264 encoder is available. "
+            + "Tried libx264 and libopenh264."
+        )
+
 
     # -c:v:0 libvpx-vp9 -row-mt 1 -crf 32 -pass 1 -speed 4 -frame-parallel 0 -g 9999 -aq-mode 0
     def generateVP9Pass1Tokens(self, quality, subIndex : int = 0):

src/ffx/help_screen.py

@@ -20,5 +20,12 @@ class HelpScreen(Screen):
         yield build_screen_log_pane()
         yield Footer()
 
+
+    def on_mount(self):
+
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
+
     def action_back(self):
         go_back_or_exit(self)

src/ffx/helper.py

@@ -6,12 +6,23 @@ from .configuration_controller import ConfigurationController
 from .logging_utils import get_ffx_logger
 from .show_descriptor import ShowDescriptor
 
+from enum import Enum
+
 
 class EmptyStringUndefined(Undefined):
     def __str__(self):
         return ''
 
 
+class LogLevel(Enum):
+
+    DEBUG = 'debug'
+    INFO = 'info'
+    WARNING = 'warning'
+    ERROR = 'error'
+    CRITICAL = 'critical'
+
+
 DIFF_ADDED_KEY = 'added'
 DIFF_REMOVED_KEY = 'removed'
 DIFF_CHANGED_KEY = 'changed'
@@ -119,7 +130,7 @@ def setDiff(a : set, b : set) -> set:
 def permutateList(inputList: list, permutation: list):
 
     # 0,1,2: ABC
-    # 0,2,1: ACB
+    # 0,2,1: ACBffmpeg:
     # 1,2,0: BCA
 
     pass

src/ffx/inspect_details_screen.py

@@ -39,8 +39,8 @@ class InspectDetailsScreen(MediaWorkflowScreenBase):
     CSS = f"""
 
     Grid {{
-        grid-size: 6 11;
+        grid-size: 6 8;
-        grid-rows: 9 2 2 2 2 8 2 2 2 8 8;
+        grid-rows: 9  2 2  2  2 10  2 10;
         grid-columns: {GRID_COLUMN_LABEL_MIN} {GRID_COLUMN_2} {GRID_COLUMN_3} {GRID_COLUMN_4} {GRID_COLUMN_5} {GRID_COLUMN_6};
         height: 100%;
         width: 100%;
@@ -88,6 +88,10 @@ class InspectDetailsScreen(MediaWorkflowScreenBase):
     #differences-table {{
         row-span: 10;
     }}
+
+    .yellow {{
+        tint: yellow 40%;
+    }}
     """
 
     @classmethod
@@ -157,6 +161,7 @@ class InspectDetailsScreen(MediaWorkflowScreenBase):
             yield Static(" ")
             yield self.differencesTable
 
+
             # Row 2
             yield Static(" ", classes="five")
 
@@ -165,29 +170,26 @@ class InspectDetailsScreen(MediaWorkflowScreenBase):
             yield Button(t("Substitute"), id="pattern_button")
             yield Static(" ", classes="three")
 
+
             # Row 4
             yield Static(t("Pattern"))
             yield Input(type="text", id="pattern_input", classes="three")
             yield Static(" ")
 
+
             # Row 5
             yield Static(" ", classes="five")
 
             # Row 6
             yield Static(t("Media Tags"))
             yield self.mediaTagsTable
-            yield Static(" ", classes="two")
+            yield Static(" ")
+
 
             # Row 7
             yield Static(" ", classes="five")
 
             # Row 8
-            yield Static(" ")
-            yield Button(t("Set Default"), id="select_default_button")
-            yield Button(t("Set Forced"), id="select_forced_button")
-            yield Static(" ", classes="two")
-
-            # Row 9
             yield Static(t("Streams"))
             yield self.tracksTable
             yield Static(" ")
@@ -314,6 +316,10 @@ class InspectDetailsScreen(MediaWorkflowScreenBase):
         self._update_show_header_labels()
 
     def on_mount(self):
+
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         self._update_grid_layout()
 
         if self._currentPattern is None:

src/ffx/logging_utils.py

@@ -5,6 +5,7 @@ import os
 FFX_LOGGER_NAME = "FFX"
 CONSOLE_HANDLER_NAME = "ffx-console"
 FILE_HANDLER_NAME = "ffx-file"
+MUTED_CONSOLE_LEVEL = logging.CRITICAL + 1
 
 
 def get_ffx_logger(name: str = FFX_LOGGER_NAME) -> logging.Logger:
@@ -66,3 +67,31 @@ def configure_ffx_logger(
     )
 
     return logger
+
+
+def set_ffx_console_logging_enabled(
+    logger: logging.Logger | None,
+    *,
+    enabled: bool,
+):
+    if logger is None:
+        return None
+
+    console_handler = next(
+        (handler for handler in logger.handlers if handler.get_name() == CONSOLE_HANDLER_NAME),
+        None,
+    )
+    if console_handler is None:
+        return None
+
+    if enabled:
+        saved_level = getattr(console_handler, "_ffx_saved_level", None)
+        if saved_level is not None:
+            console_handler.setLevel(saved_level)
+            delattr(console_handler, "_ffx_saved_level")
+        return console_handler
+
+    if not hasattr(console_handler, "_ffx_saved_level"):
+        console_handler._ffx_saved_level = console_handler.level
+    console_handler.setLevel(MUTED_CONSOLE_LEVEL)
+    return console_handler

src/ffx/media_edit_screen.py

@@ -12,11 +12,13 @@ from ffx.track_descriptor import TrackDescriptor
 from .i18n import t
 from .confirm_screen import ConfirmScreen
 from .media_workflow_screen_base import MediaWorkflowScreenBase
-from .screen_support import build_screen_log_pane, localized_column_width, write_screen_log
+from .screen_support import build_screen_log_pane, localized_column_width
 from .tag_delete_screen import TagDeleteScreen
 from .tag_details_screen import TagDetailsScreen
 from .track_details_screen import TrackDetailsScreen
 
+from .helper import LogLevel
+
 
 class MediaEditScreen(MediaWorkflowScreenBase):
 
@@ -176,6 +178,10 @@ class MediaEditScreen(MediaWorkflowScreenBase):
         yield Footer()
 
     def on_mount(self):
+
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         self._update_grid_layout()
         self.updateMediaTags()
         self.updateTracks()
@@ -207,9 +213,24 @@ class MediaEditScreen(MediaWorkflowScreenBase):
         if self._messageText:
             self.notify(self._messageText)
 
-    def _notify_from_worker(self, message: str) -> None:
+
-        self.app.call_from_thread(write_screen_log, self, str(message))
+    def workerLoggingHandler(self,
-        self.app.call_from_thread(self.notify, str(message))
+                                message: str,
+                                level: LogLevel = LogLevel.INFO) -> None:
+
+        if level == LogLevel.DEBUG:
+            self.context["logger"].debug(str(message))
+        elif level == LogLevel.INFO:
+            self.context["logger"].info(str(message))
+        elif level == LogLevel.WARNING:
+            self.context["logger"].warning(str(message))
+        elif level == LogLevel.ERROR:
+            self.context["logger"].error(str(message))
+        elif level == LogLevel.CRITICAL:
+            self.context["logger"].critical(str(message))
+        else:
+            raise Exception(f"Undefined Logging Level (msg={message})")
+
 
     def _report_apply_timings(self, applyResult: dict, reloadSeconds: float = 0.0) -> None:
         timings = dict(applyResult.get("timings", {}))
@@ -226,10 +247,6 @@ class MediaEditScreen(MediaWorkflowScreenBase):
             + f"total={totalSeconds:.2f}s"
         )
         self.context["logger"].info(timingSummary)
-        write_screen_log(self, timingSummary)
-
-        if int(self.context.get("verbosity", 0) or 0) > 0:
-            self.notify(timingSummary)
 
     def updateToggleButtons(self):
         self._set_toggle_button_state(
@@ -402,9 +419,8 @@ class MediaEditScreen(MediaWorkflowScreenBase):
             self.setMessage(t("Apply already running."))
             return
 
-        write_screen_log(
+        self.context["logger"].info(
-            self,
+            t("Starting metadata apply for {filename}.", filename=self._mediaFilename)
-            t("Starting metadata apply for {filename}.", filename=self._mediaFilename),
         )
         self._applyChangesWorker = self.run_apply_changes_worker()
 
@@ -420,7 +436,7 @@ class MediaEditScreen(MediaWorkflowScreenBase):
             self._mediaFilename,
             self._baselineMediaDescriptor,
             self._sourceMediaDescriptor,
-            notify=self._notify_from_worker,
+            loggingHandler = self.workerLoggingHandler,
         )
 
     def on_worker_state_changed(self, event: Worker.StateChanged) -> None:
@@ -435,7 +451,6 @@ class MediaEditScreen(MediaWorkflowScreenBase):
                     self._mediaFilename,
                     exc_info=(type(error), error, error.__traceback__),
                 )
-                write_screen_log(self, t("Apply failed: {error}", error=error))
                 self.setMessage(t("Apply failed: {error}", error=error))
             self._applyChangesWorker = None
             return
@@ -447,8 +462,7 @@ class MediaEditScreen(MediaWorkflowScreenBase):
 
         if applyResult.get("dry_run", False):
             self._report_apply_timings(applyResult, reloadSeconds=0.0)
-            write_screen_log(
+            self.context["logger"].info(
-                self,
                 t(
                     "Dry-run prepared temporary output {target_path}.",
                     target_path=applyResult["target_path"],
@@ -464,12 +478,12 @@ class MediaEditScreen(MediaWorkflowScreenBase):
             return
 
         reloadStart = monotonic()
-        write_screen_log(self, t("Reloading file after metadata write."))
+        self.context["logger"].info(t("Reloading file after metadata write."))
         self.reloadProperties(reset_draft=True)
         self.refreshAfterDraftChange()
         reloadSeconds = monotonic() - reloadStart
         self._report_apply_timings(applyResult, reloadSeconds=reloadSeconds)
-        write_screen_log(self, t("Changes applied and file reloaded."))
+        self.context["logger"].info(t("Changes applied and file reloaded."))
         self.setMessage(t("Changes applied and file reloaded."))
         self._applyChangesWorker = None
 

src/ffx/metadata_editor.py

@@ -16,6 +16,8 @@ from .media_descriptor_change_set import MediaDescriptorChangeSet
 from .process import executeProcess, formatCommandSequence
 from .video_encoder import VideoEncoder
 
+from .helper import LogLevel
+
 
 def create_temporary_output_path(source_path: str) -> str:
     sourceDirectory = os.path.dirname(os.path.abspath(source_path)) or "."
@@ -75,22 +77,22 @@ def notify_ffmpeg_invocation(
     context: dict,
     command_sequence: list[str],
     *,
-    notify=None,
+    loggingHandler = None,
     dry_run: bool = False,
 ) -> None:
-    notify_callback = notify or context.get("notify_callback")
+    loggingCallback = loggingHandler or context.get("logging_handler")
-    if not callable(notify_callback):
+    if not callable(loggingCallback):
         return
 
     verbosity = int(context.get("verbosity", 0) or 0)
     if verbosity > 0:
         if dry_run:
-            notify_callback(f"ffmpeg dry-run: {formatCommandSequence(command_sequence)}")
+            loggingCallback(f"ffmpeg dry-run: {formatCommandSequence(command_sequence)}", level = LogLevel.DEBUG)
         else:
-            notify_callback(f"ffmpeg: {formatCommandSequence(command_sequence)}")
+            loggingCallback(f"ffmpeg: {formatCommandSequence(command_sequence)}", level = LogLevel.DEBUG)
         return
 
-    notify_callback("ffmpeg dry-run prepared.") if dry_run else notify_callback(
+    loggingCallback("ffmpeg dry-run prepared.") if dry_run else loggingCallback(
         "ffmpeg metadata write started."
     )
 
@@ -101,7 +103,7 @@ def apply_metadata_edits(
     baseline_descriptor: MediaDescriptor,
     draft_descriptor: MediaDescriptor,
     *,
-    notify=None,
+    loggingHandler = None,
 ) -> dict[str, object]:
 
     temporaryOutputPath = create_temporary_output_path(source_path)
@@ -126,7 +128,7 @@ def apply_metadata_edits(
             notify_ffmpeg_invocation(
                 editContext,
                 commandSequence,
-                notify=notify,
+                loggingHandler = loggingHandler,
                 dry_run=True,
             )
 
@@ -142,7 +144,9 @@ def apply_metadata_edits(
                 },
             }
 
-        notify_ffmpeg_invocation(editContext, commandSequence, notify=notify)
+        notify_ffmpeg_invocation(editContext,
+                                    commandSequence,
+                                    loggingHandler = loggingHandler)
 
         ffmpegStart = monotonic()
         _out, err, rc = executeProcess(commandSequence, context=editContext)

src/ffx/pattern_delete_screen.py

@@ -68,6 +68,10 @@ class PatternDeleteScreen(Screen):
 
 
     def on_mount(self):
+
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         if self.__showDescriptor:
             self.query_one("#showlabel", Static).update(f"{self.__showDescriptor.getId()} - {self.__showDescriptor.getName()} ({self.__showDescriptor.getYear()})")
         if not self.__pattern is None:

src/ffx/pattern_details_screen.py

@@ -326,6 +326,9 @@ class PatternDetailsScreen(Screen):
 
     def on_mount(self):
 
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         if not self.__showDescriptor is None:
             self.query_one("#showlabel", Static).update(f"{self.__showDescriptor.getId()} - {self.__showDescriptor.getName()} ({self.__showDescriptor.getYear()})")
 

src/ffx/screen_support.py

@@ -1,12 +1,15 @@
 from __future__ import annotations
 
+import logging
+import weakref
 from collections.abc import Mapping
 from dataclasses import dataclass
 
 from rich.cells import cell_len
 from rich.measure import measure_renderables
 from rich.text import Text
-from textual.widgets import Collapsible, RichLog
+from textual import events
+from textual.widgets import Collapsible, RichLog, Static
 
 from .helper import formatRichColor
 from .i18n import t
@@ -20,6 +23,152 @@ from .track_controller import TrackController
 
 SCREEN_LOG_PANE_ID = "screen_log_pane"
 SCREEN_LOG_VIEW_ID = "screen_log_view"
+SCREEN_LOG_RESIZE_HANDLE_ID = "screen_log_resize_handle"
+SCREEN_LOG_HANDLER_NAME = "ffx-screen-log"
+SCREEN_LOG_DEFAULT_HEIGHT = 8
+SCREEN_LOG_MIN_HEIGHT = 4
+SCREEN_LOG_COMPONENT_WIDTH = 16
+SCREEN_LOG_LEVEL_WIDTH = 8
+
+_SCREEN_LOG_PANE_ENABLED = False
+
+
+class ScreenLogHandler(logging.Handler):
+    """Mirror logger output into the active screen log pane when available."""
+
+    def __init__(self, app) -> None:
+        super().__init__(level=logging.DEBUG)
+        self.set_name(SCREEN_LOG_HANDLER_NAME)
+        self.set_app(app)
+
+    def set_app(self, app) -> None:
+        self._app_ref = weakref.ref(app) if app is not None else lambda: None
+
+    def emit(self, record: logging.LogRecord) -> None:
+        app = self._app_ref()
+        if app is None:
+            return
+
+        try:
+            message = str(self.format(record)).strip()
+        except Exception:
+            self.handleError(record)
+            return
+
+        if not message:
+            return
+
+        try:
+            app.call_from_thread(write_screen_log, app.screen, message)
+        except RuntimeError:
+            write_screen_log(app.screen, message)
+        except Exception:
+            self.handleError(record)
+
+
+class ScreenLogResizeHandle(Static):
+    DEFAULT_CSS = """
+    ScreenLogResizeHandle {
+        width: 100%;
+        height: 1;
+        content-align: center middle;
+        color: $text-muted;
+        background: $panel-lighten-1;
+    }
+
+    ScreenLogResizeHandle:hover {
+        color: $text;
+        background: $panel-lighten-2;
+    }
+    """
+
+    def __init__(self) -> None:
+        super().__init__(" drag to resize ", id=SCREEN_LOG_RESIZE_HANDLE_ID)
+        self._drag_active = False
+        self._drag_origin_screen_y = 0
+        self._drag_origin_height = SCREEN_LOG_DEFAULT_HEIGHT
+
+    def _get_log_pane(self):
+        return self.parent.parent if self.parent is not None else None
+
+    def on_mouse_down(self, event: events.MouseDown) -> None:
+        if event.button != 1:
+            return
+
+        log_pane = self._get_log_pane()
+        if log_pane is None:
+            return
+
+        self._drag_active = True
+        self._drag_origin_screen_y = event.screen_y
+        self._drag_origin_height = log_pane.get_log_height()
+        self.capture_mouse()
+        event.stop()
+
+    def on_mouse_move(self, event: events.MouseMove) -> None:
+        if not self._drag_active:
+            return
+
+        log_pane = self._get_log_pane()
+        if log_pane is None:
+            return
+
+        next_height = self._drag_origin_height + (
+            self._drag_origin_screen_y - event.screen_y
+        )
+        log_pane.set_log_height(next_height)
+        event.stop()
+
+    def on_mouse_up(self, event: events.MouseUp) -> None:
+        if not self._drag_active:
+            return
+
+        self._drag_active = False
+        self.release_mouse()
+        event.stop()
+
+
+class ResizableScreenLogPane(Collapsible):
+    def __init__(self) -> None:
+        self._log_view = RichLog(
+            id=SCREEN_LOG_VIEW_ID,
+            wrap=True,
+            markup=False,
+            highlight=False,
+            auto_scroll=True,
+        )
+        self._log_height = SCREEN_LOG_DEFAULT_HEIGHT
+        self._apply_log_height()
+
+        super().__init__(
+            ScreenLogResizeHandle(),
+            self._log_view,
+            title=t("Log"),
+            collapsed=True,
+            id=SCREEN_LOG_PANE_ID,
+        )
+        self.styles.width = "100%"
+
+    def _apply_log_height(self) -> None:
+        self._log_view.styles.height = self._log_height
+        self._log_view.styles.width = "100%"
+
+    def get_log_height(self) -> int:
+        return int(self._log_height)
+
+    def set_log_height(self, height: int) -> None:
+        next_height = max(SCREEN_LOG_MIN_HEIGHT, int(height))
+
+        try:
+            available_height = int(self.app.size.height) - 8
+        except Exception:
+            available_height = next_height
+
+        if available_height > 0:
+            next_height = min(next_height, available_height)
+
+        self._log_height = next_height
+        self._apply_log_height()
 
 
 @dataclass(frozen=True)
@@ -52,6 +201,48 @@ def build_screen_bootstrap(context: dict) -> ScreenBootstrap:
     )
 
 
+def set_screen_log_pane_enabled(enabled: bool) -> None:
+    global _SCREEN_LOG_PANE_ENABLED
+    _SCREEN_LOG_PANE_ENABLED = bool(enabled)
+
+
+def is_screen_log_pane_enabled() -> bool:
+    return bool(_SCREEN_LOG_PANE_ENABLED)
+
+
+def configure_screen_log_handler(logger, app, *, enabled: bool):
+    if logger is None:
+        return None
+
+    screen_log_handler = next(
+        (handler for handler in logger.handlers if handler.get_name() == SCREEN_LOG_HANDLER_NAME),
+        None,
+    )
+
+    if not enabled:
+        if screen_log_handler is not None:
+            logger.removeHandler(screen_log_handler)
+            screen_log_handler.close()
+        return None
+
+    if screen_log_handler is None:
+        screen_log_handler = ScreenLogHandler(app)
+        logger.addHandler(screen_log_handler)
+    elif isinstance(screen_log_handler, ScreenLogHandler):
+        screen_log_handler.set_app(app)
+
+    screen_log_handler.setLevel(logging.DEBUG)
+    screen_log_handler.setFormatter(
+        logging.Formatter(
+            f"%(name)-{SCREEN_LOG_COMPONENT_WIDTH}s "
+            + f"%(levelname)-{SCREEN_LOG_LEVEL_WIDTH}s "
+            + "%(asctime)s | %(message)s",
+            datefmt="%Y-%m-%d %H:%M:%S",
+        )
+    )
+    return screen_log_handler
+
+
 def build_screen_controllers(
     context: dict,
     *,
@@ -149,27 +340,15 @@ def update_table_column_label(table, column_key, label) -> None:
     table.refresh()
 
 
-def build_screen_log_pane() -> Collapsible:
+def build_screen_log_pane() -> ResizableScreenLogPane | Static:
     """Create a shared collapsible log pane for screen-local diagnostics."""
 
-    logView = RichLog(
+    if not is_screen_log_pane_enabled():
-        id=SCREEN_LOG_VIEW_ID,
+        hidden = Static("", id=f"{SCREEN_LOG_PANE_ID}_disabled")
-        wrap=True,
+        hidden.display = False
-        markup=False,
+        return hidden
-        highlight=False,
-        auto_scroll=True,
-    )
-    logView.styles.height = 8
-    logView.styles.width = "100%"
 
-    logPane = Collapsible(
+    return ResizableScreenLogPane()
-        logView,
-        title=t("Log"),
-        collapsed=True,
-        id=SCREEN_LOG_PANE_ID,
-    )
-    logPane.styles.width = "100%"
-    return logPane
 
 
 def toggle_screen_log_pane(screen) -> bool:

src/ffx/settings_screen.py

@@ -20,5 +20,12 @@ class SettingsScreen(Screen):
         yield build_screen_log_pane()
         yield Footer()
 
+
+    def on_mount(self):
+
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
+
     def action_back(self):
         go_back_or_exit(self)

src/ffx/shifted_season_delete_screen.py

@@ -67,6 +67,9 @@ class ShiftedSeasonDeleteScreen(Screen):
 
     def on_mount(self):
 
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         shiftedSeason: ShiftedSeason = self.__ssc.getShiftedSeason(self.__shiftedSeasonId)
 
         ownerLabel = (

src/ffx/shifted_season_details_screen.py

@@ -109,6 +109,9 @@ class ShiftedSeasonDetailsScreen(Screen):
 
     def on_mount(self):
 
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         if self.__shiftedSeasonId is not None:
             shiftedSeason: ShiftedSeason = self.__ssc.getShiftedSeason(self.__shiftedSeasonId)
 

src/ffx/show_delete_screen.py

@@ -109,5 +109,12 @@ class ShowDeleteScreen(Screen):
         if event.button.id == "cancel_button":
             self.app.pop_screen()
 
+
+    def on_mount(self):
+
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
+
     def action_back(self):
         go_back_or_exit(self)

src/ffx/show_details_screen.py

@@ -175,6 +175,9 @@ class ShowDetailsScreen(Screen):
 
     def on_mount(self):
 
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         if self.__showDescriptor is not None:
 
             showId = int(self.__showDescriptor.getId())

src/ffx/shows_screen.py

@@ -244,6 +244,10 @@ class ShowsScreen(Screen):
 
 
     def on_mount(self) -> None:
+
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         for show in self.__sc.getAllShows():
             self._add_show_row(show.getDescriptor(self.context))
 

src/ffx/tag_delete_screen.py

@@ -64,6 +64,9 @@ class TagDeleteScreen(Screen):
 
     def on_mount(self):
 
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         self.query_one("#keylabel", Static).update(str(self.__key))
         self.query_one("#valuelabel", Static).update(str(self.__value))
 

src/ffx/tag_details_screen.py

@@ -87,6 +87,9 @@ class TagDetailsScreen(Screen):
 
     def on_mount(self):
 
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         if self.__key is not None:
             self.query_one("#key_input", Input).value = str(self.__key)
 

src/ffx/track_codec.py

@@ -4,7 +4,7 @@ from enum import Enum
 class TrackCodec(Enum):
 
     VP9  =      {'identifier': 'vp9',                'format': 'ivf',        'extension': 'ivf'  , 'label':   'VP9'}
-    H265 =      {'identifier': 'hevc',               'format': 'h265',       'extension': 'h265' ,'label':   'H.265'}
+    H265 =      {'identifier': 'hevc',               'format': None,       'extension': 'h265' ,'label':   'H.265'}
     H264 =      {'identifier': 'h264',               'format': 'h264',       'extension': 'h264' ,'label':   'H.264'}
     MPEG4 =     {'identifier': 'mpeg4',             'format': 'm4v',        'extension': 'm4v' ,'label':   'MPEG-4'}
     MPEG2 =     {'identifier': 'mpeg2video',        'format': 'mpeg2video', 'extension': 'mpg' ,'label':   'MPEG-2'}

src/ffx/track_delete_screen.py

@@ -67,6 +67,9 @@ class TrackDeleteScreen(Screen):
 
     def on_mount(self):
 
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         self.query_one("#subindexlabel", Static).update(str(self.__trackDescriptor.getSubIndex()))
         self.query_one("#patternlabel", Static).update(str(self.__trackDescriptor.getPatternId()))
         self.query_one("#languagelabel", Static).update(str(self.__trackDescriptor.getLanguage().label()))

src/ffx/track_details_screen.py

@@ -236,6 +236,9 @@ class TrackDetailsScreen(Screen):
 
     def on_mount(self):
 
+        if getattr(self, 'context', {}).get('debug', False):
+            self.title = f"{self.app.title} - {self.__class__.__name__}"
+
         self.query_one("#index_label", Static).update(
             str(self.__index) if self.__index is not None else "-"
         )

tests/support/ffx_bundle.py

@@ -7,6 +7,7 @@ import os
 from pathlib import Path
 import subprocess
 import sys
+from functools import lru_cache
 from typing import Mapping
 
 
@@ -95,8 +96,69 @@ def write_vtt(path: Path, lines: tuple[str, ...]) -> Path:
     return path
 
 
-def create_source_fixture(workdir: Path, filename: str, tracks: list[SourceTrackSpec], duration_seconds: int = 1) -> Path:
+@lru_cache(maxsize=None)
+def _ffmpeg_encoder_is_available(encoder_name: str) -> bool:
+    completed = subprocess.run(
+        ["ffmpeg", "-encoders"],
+        capture_output=True,
+        text=True,
+    )
+    if completed.returncode != 0:
+        return False
+
+    encoder_label = str(encoder_name).strip()
+    for line in completed.stdout.splitlines():
+        if not line.startswith(" "):
+            continue
+
+        tokens = line.split(maxsplit=2)
+        if len(tokens) >= 2 and tokens[1] == encoder_label:
+            return True
+
+    return False
+
+
+def _resolve_fixture_video_encoder(
+    video_encoder: str,
+    video_encoder_options: tuple[str, ...],
+) -> tuple[str, tuple[str, ...]]:
+    if video_encoder != "libx264":
+        return video_encoder, video_encoder_options
+
+    if _ffmpeg_encoder_is_available("libx264"):
+        return video_encoder, video_encoder_options
+
+    if _ffmpeg_encoder_is_available("libopenh264"):
+        # Keep fixture generation software-based when libx264 is missing.
+        return "libopenh264", ("-pix_fmt", "yuv420p")
+
+    return video_encoder, video_encoder_options
+
+
+def create_source_fixture(
+    workdir: Path,
+    filename: str,
+    tracks: list[SourceTrackSpec],
+    duration_seconds: int = 1,
+    *,
+    video_encoder: str = "libx264",
+    video_encoder_options: tuple[str, ...] = (
+        "-preset",
+        "ultrafast",
+        "-crf",
+        "35",
+        "-pix_fmt",
+        "yuv420p",
+    ),
+    audio_encoder: str = "aac",
+    audio_encoder_options: tuple[str, ...] = ("-b:a", "48k"),
+    subtitle_encoder: str = "webvtt",
+) -> Path:
     output_path = workdir / filename
+    video_encoder, video_encoder_options = _resolve_fixture_video_encoder(
+        video_encoder,
+        video_encoder_options,
+    )
 
     has_video = any(track.track_type == TrackType.VIDEO for track in tracks)
     has_audio = any(track.track_type == TrackType.AUDIO for track in tracks)
@@ -189,21 +251,16 @@ def create_source_fixture(workdir: Path, filename: str, tracks: list[SourceTrack
     command += map_tokens
     command += metadata_tokens
     command += disposition_tokens
+    if has_video:
+        command += ["-c:v", video_encoder] + list(video_encoder_options)
+
+    if has_audio:
+        command += ["-c:a", audio_encoder] + list(audio_encoder_options)
+
+    if subtitle_input_indices:
+        command += ["-c:s", subtitle_encoder]
+
     command += [
-        "-c:v",
-        "libx264",
-        "-preset",
-        "ultrafast",
-        "-crf",
-        "35",
-        "-pix_fmt",
-        "yuv420p",
-        "-c:a",
-        "aac",
-        "-b:a",
-        "48k",
-        "-c:s",
-        "webvtt",
         "-t",
         str(duration_seconds),
         "-shortest",

tests/unit/test_cli_lazy_imports.py

@@ -168,6 +168,40 @@ class CliLazyImportTests(unittest.TestCase):
             result["modules"],
         )
 
+    def test_root_debug_flag_parses_without_loading_runtime_modules(self):
+        result = self.run_python(
+            textwrap.dedent(
+                f"""
+                import json
+                import sys
+
+                sys.path.insert(0, {str(SRC_ROOT)!r})
+
+                import ffx.cli
+
+                context = ffx.cli.ffx.make_context(
+                    "ffx",
+                    ["--debug", "help"],
+                    resilient_parsing=True,
+                )
+
+                print(json.dumps({{
+                    "debug": context.params["debug"],
+                    "modules": {{
+                        module_name: module_name in sys.modules
+                        for module_name in {HEAVY_MODULES!r}
+                    }},
+                }}))
+                """
+            )
+        )
+
+        self.assertTrue(result["debug"])
+        self.assertTrue(
+            all(not is_loaded for is_loaded in result["modules"].values()),
+            result["modules"],
+        )
+
     def test_convert_cut_option_supports_flag_duration_and_start_duration_forms(self):
         result = self.run_python(
             textwrap.dedent(

tests/unit/test_cli_unmux_sequence.py

@@ -0,0 +1,89 @@
+from __future__ import annotations
+
+from pathlib import Path
+import sys
+import unittest
+
+
+SRC_ROOT = Path(__file__).resolve().parents[2] / "src"
+
+if str(SRC_ROOT) not in sys.path:
+    sys.path.insert(0, str(SRC_ROOT))
+
+
+from ffx import cli  # noqa: E402
+from ffx.track_codec import TrackCodec  # noqa: E402
+from ffx.track_descriptor import TrackDescriptor  # noqa: E402
+from ffx.track_type import TrackType  # noqa: E402
+
+
+class UnmuxSequenceTests(unittest.TestCase):
+    def test_h265_video_unmux_uses_annex_b_bitstream_filter_without_forced_format(self):
+        track_descriptor = TrackDescriptor(
+            index=0,
+            sub_index=0,
+            track_type=TrackType.VIDEO,
+            codec_name=TrackCodec.H265,
+            tags={},
+            disposition_set=set(),
+        )
+
+        sequence = cli.getUnmuxSequence(
+            track_descriptor,
+            "input.mp4",
+            "episode_0_eng",
+        )
+
+        self.assertEqual(
+            [
+                "ffmpeg",
+                "-y",
+                "-i",
+                "input.mp4",
+                "-map",
+                "0:v:0",
+                "-c:v",
+                "copy",
+                "-bsf:v",
+                "hevc_mp4toannexb",
+                "episode_0_eng.h265",
+            ],
+            sequence,
+        )
+
+    def test_non_h265_unmux_keeps_generic_copy_behavior(self):
+        track_descriptor = TrackDescriptor(
+            index=1,
+            sub_index=0,
+            track_type=TrackType.SUBTITLE,
+            codec_name=TrackCodec.SRT,
+            tags={},
+            disposition_set=set(),
+        )
+
+        sequence = cli.getUnmuxSequence(
+            track_descriptor,
+            "input.mkv",
+            "episode_1_eng",
+        )
+
+        self.assertEqual(
+            [
+                "ffmpeg",
+                "-y",
+                "-i",
+                "input.mkv",
+                "-map",
+                "0:s:0",
+                "-c",
+                "copy",
+                "-f",
+                "srt",
+                "episode_1_eng.srt",
+            ],
+            sequence,
+        )
+
+
+if __name__ == "__main__":
+    unittest.main()

tests/unit/test_ffx_controller.py

@@ -1,5 +1,6 @@
 from __future__ import annotations
 
+import click
 from pathlib import Path
 import sys
 import unittest
@@ -32,6 +33,9 @@ class StaticConfig:
 
 
 class FfxControllerTests(unittest.TestCase):
+    def tearDown(self):
+        FfxController.isFfmpegEncoderAvailable.cache_clear()
+
     def make_context(self, video_encoder: VideoEncoder) -> dict:
         return {
             "logger": get_ffx_logger(),
@@ -192,6 +196,62 @@ class FfxControllerTests(unittest.TestCase):
         self.assertIn("ENCODING_QUALITY=19", commands[0])
         mocked_info.assert_any_call("Setting quality 19 from pattern")
 
+    def test_generate_h264_tokens_prefers_libx264_when_available(self):
+        context = self.make_context(VideoEncoder.H264)
+        target_descriptor, source_descriptor = self.make_media_descriptors()
+        controller = FfxController(context, target_descriptor, source_descriptor)
+
+        with patch.object(
+            FfxController,
+            "getSupportedSoftwareH264Encoder",
+            return_value="libx264",
+        ):
+            tokens = controller.generateH264Tokens(23)
+
+        self.assertEqual(
+            ["-c:v:0", "libx264", "-preset", "slow", "-crf", "23"],
+            tokens,
+        )
+
+    def test_generate_h264_tokens_falls_back_to_libopenh264_and_logs_warning(self):
+        context = self.make_context(VideoEncoder.H264)
+        target_descriptor, source_descriptor = self.make_media_descriptors()
+        controller = FfxController(context, target_descriptor, source_descriptor)
+
+        with (
+            patch.object(
+                FfxController,
+                "getSupportedSoftwareH264Encoder",
+                return_value="libopenh264",
+            ),
+            patch.object(context["logger"], "warning") as mocked_warning,
+        ):
+            tokens = controller.generateH264Tokens(23)
+
+        self.assertEqual(
+            ["-c:v:0", "libopenh264", "-pix_fmt", "yuv420p"],
+            tokens,
+        )
+        mocked_warning.assert_called_once_with(
+            "libx264 encoder unavailable; falling back to libopenh264 for H.264 encoding."
+        )
+
+    def test_generate_h264_tokens_raises_when_no_supported_software_encoder_exists(self):
+        context = self.make_context(VideoEncoder.H264)
+        target_descriptor, source_descriptor = self.make_media_descriptors()
+        controller = FfxController(context, target_descriptor, source_descriptor)
+
+        with patch.object(
+            FfxController,
+            "getSupportedSoftwareH264Encoder",
+            return_value=None,
+        ):
+            with self.assertRaisesRegex(
+                click.ClickException,
+                "no supported software H.264 encoder is available",
+            ):
+                controller.generateH264Tokens(23)
+
 
 if __name__ == "__main__":
     unittest.main()

tests/unit/test_file_properties_asset_probe.py

@@ -2,6 +2,7 @@ from __future__ import annotations
 
 from pathlib import Path
 import sys
+import tempfile
 import unittest
 
 
@@ -16,6 +17,7 @@ from ffx.i18n import set_current_language  # noqa: E402
 from ffx.logging_utils import get_ffx_logger  # noqa: E402
 from ffx.track_codec import TrackCodec  # noqa: E402
 from ffx.track_type import TrackType  # noqa: E402
+from tests.support.ffx_bundle import SourceTrackSpec, create_source_fixture  # noqa: E402
 
 
 class StaticConfig:
@@ -39,10 +41,26 @@ class FilePropertiesAssetProbeTests(unittest.TestCase):
         }
         set_current_language("de")
 
-        media_path = (
+        with tempfile.TemporaryDirectory() as tmpdir:
-            Path(__file__).resolve().parents[1]
+            media_path = create_source_fixture(
-            / "assets"
+                Path(tmpdir),
-            / "Boruto; Naruto Next Generations (2017) - 0069 Super-Chochos Liebestaumel - S01E0069.webm"
+                "fixture.webm",
+                [
+                    SourceTrackSpec(TrackType.VIDEO, identity="video-0"),
+                    SourceTrackSpec(TrackType.AUDIO, identity="audio-1", language="eng"),
+                    SourceTrackSpec(
+                        TrackType.SUBTITLE,
+                        identity="subtitle-2",
+                        language="eng",
+                        subtitle_lines=("Lorem ipsum dolor sit amet.",),
+                    ),
+                ],
+                duration_seconds=3,
+                video_encoder="libvpx-vp9",
+                video_encoder_options=("-b:v", "0", "-crf", "45"),
+                audio_encoder="libopus",
+                audio_encoder_options=("-b:a", "48k"),
+                subtitle_encoder="webvtt",
             )
 
             file_properties = FileProperties(context, str(media_path))

tests/unit/test_logging.py

@@ -16,8 +16,10 @@ if str(SRC_ROOT) not in sys.path:
 from ffx.logging_utils import (  # noqa: E402
     CONSOLE_HANDLER_NAME,
     FILE_HANDLER_NAME,
+    MUTED_CONSOLE_LEVEL,
     configure_ffx_logger,
     get_ffx_logger,
+    set_ffx_console_logging_enabled,
 )
 
 
@@ -81,6 +83,33 @@ class LoggingUtilsTests(unittest.TestCase):
 
         self.cleanup_logger(logger_name)
 
+    def test_set_ffx_console_logging_enabled_mutes_and_restores_console_handler(self):
+        logger_name = "ffx-test-console-mute"
+        self.cleanup_logger(logger_name)
+
+        with tempfile.TemporaryDirectory() as tempdir:
+            log_path = Path(tempdir) / "ffx.log"
+
+            logger = configure_ffx_logger(
+                str(log_path),
+                logging.DEBUG,
+                logging.INFO,
+                name=logger_name,
+            )
+            console_handler = next(
+                handler for handler in logger.handlers if handler.get_name() == CONSOLE_HANDLER_NAME
+            )
+
+            self.assertEqual(logging.INFO, console_handler.level)
+
+            set_ffx_console_logging_enabled(logger, enabled=False)
+            self.assertEqual(MUTED_CONSOLE_LEVEL, console_handler.level)
+
+            set_ffx_console_logging_enabled(logger, enabled=True)
+            self.assertEqual(logging.INFO, console_handler.level)
+
+        self.cleanup_logger(logger_name)
+
 
 if __name__ == "__main__":
     unittest.main()

tests/unit/test_metadata_editor.py

@@ -15,6 +15,7 @@ if str(SRC_ROOT) not in sys.path:
 
 
 from ffx.logging_utils import get_ffx_logger  # noqa: E402
+from ffx.helper import LogLevel  # noqa: E402
 from ffx.media_descriptor import MediaDescriptor  # noqa: E402
 from ffx.metadata_editor import (  # noqa: E402
     apply_metadata_edits,
@@ -33,6 +34,16 @@ class StaticConfig:
         return {}
 
 
+class NotificationCollector:
+    def __init__(self) -> None:
+        self.messages: list[str] = []
+        self.levels: list[LogLevel | None] = []
+
+    def __call__(self, message: str, level: LogLevel | None = None) -> None:
+        self.messages.append(message)
+        self.levels.append(level)
+
+
 def make_context(*, dry_run: bool = False) -> dict:
     return {
         "logger": get_ffx_logger(),
@@ -151,7 +162,7 @@ class MetadataEditorTests(unittest.TestCase):
         context = make_context(dry_run=True)
         baseline_descriptor = make_descriptor()
         draft_descriptor = baseline_descriptor.clone(context=context)
-        notifications = []
+        notifications = NotificationCollector()
         expected_command = build_metadata_edit_command(
             build_metadata_edit_context(context),
             "/tmp/example.mkv",
@@ -170,12 +181,13 @@ class MetadataEditorTests(unittest.TestCase):
                 "/tmp/example.mkv",
                 baseline_descriptor,
                 draft_descriptor,
-                notify=notifications.append,
+                loggingHandler = notifications,
             )
 
         mocked_execute.assert_not_called()
         mocked_replace.assert_not_called()
-        self.assertEqual(["ffmpeg dry-run prepared."], notifications)
+        self.assertEqual(["ffmpeg dry-run prepared."], notifications.messages)
+        self.assertEqual([None], notifications.levels)
         self.assertEqual(
             {
                 "applied": False,
@@ -204,7 +216,7 @@ class MetadataEditorTests(unittest.TestCase):
         context["verbosity"] = 1
         baseline_descriptor = make_descriptor()
         draft_descriptor = baseline_descriptor.clone(context=context)
-        notifications = []
+        notifications = NotificationCollector()
 
         with (
             patch("ffx.metadata_editor.create_temporary_output_path", return_value="/tmp/.edit.mkv"),
@@ -216,11 +228,12 @@ class MetadataEditorTests(unittest.TestCase):
                 "/tmp/example.mkv",
                 baseline_descriptor,
                 draft_descriptor,
-                notify=notifications.append,
+                loggingHandler = notifications,
             )
 
-        self.assertEqual(1, len(notifications))
+        self.assertEqual(1, len(notifications.messages))
-        self.assertTrue(notifications[0].startswith("ffmpeg: ffmpeg "))
+        self.assertTrue(notifications.messages[0].startswith("ffmpeg: ffmpeg "))
+        self.assertEqual([LogLevel.DEBUG], notifications.levels)
 
 
 if __name__ == "__main__":

tests/unit/test_screen_support.py

@@ -1,6 +1,7 @@
 from __future__ import annotations
 
 from pathlib import Path
+import logging
 import sys
 import unittest
 from unittest.mock import patch
@@ -57,9 +58,38 @@ class FakeScreen:
         self.app = FakeApp(screen_stack)
 
 
+class FakeRichLog:
+    def __init__(self):
+        self.messages = []
+
+    def write(self, message):
+        self.messages.append(message)
+
+
+class FakeScreenWithLog:
+    def __init__(self):
+        self.log_view = FakeRichLog()
+
+    def query_one(self, selector, _widget_type=None):
+        if selector == f"#{screen_support.SCREEN_LOG_VIEW_ID}":
+            return self.log_view
+        raise LookupError(selector)
+
+
+class FakeThreadedApp:
+    def __init__(self, screen):
+        self.screen = screen
+        self.calls = []
+
+    def call_from_thread(self, func, *args):
+        self.calls.append((func, args))
+        return func(*args)
+
+
 class ScreenSupportTests(unittest.TestCase):
     def tearDown(self):
         set_current_language("de")
+        screen_support.set_screen_log_pane_enabled(False)
 
     def make_context(self):
         return {
@@ -168,6 +198,63 @@ class ScreenSupportTests(unittest.TestCase):
         self.assertGreater(len(translated), 8)
         self.assertEqual(len(translated) + 2, screen_support.localized_column_width(translated, 8))
 
+    def test_build_screen_log_pane_is_hidden_when_debug_mode_is_disabled(self):
+        screen_support.set_screen_log_pane_enabled(False)
+
+        log_pane = screen_support.build_screen_log_pane()
+
+        self.assertFalse(log_pane.display)
+
+    def test_build_screen_log_pane_is_collapsed_when_debug_mode_is_enabled(self):
+        screen_support.set_screen_log_pane_enabled(True)
+
+        log_pane = screen_support.build_screen_log_pane()
+
+        self.assertIsInstance(log_pane, screen_support.ResizableScreenLogPane)
+        self.assertEqual(screen_support.SCREEN_LOG_PANE_ID, log_pane.id)
+        self.assertTrue(log_pane.collapsed)
+
+    def test_resizable_screen_log_pane_clamps_height_to_minimum(self):
+        log_pane = screen_support.ResizableScreenLogPane()
+
+        log_pane.set_log_height(1)
+
+        self.assertEqual(screen_support.SCREEN_LOG_MIN_HEIGHT, log_pane.get_log_height())
+
+    def test_configure_screen_log_handler_routes_logger_messages_to_active_screen(self):
+        logger_name = "ffx-test-screen-log-handler"
+        logger = logging.getLogger(logger_name)
+        logger.setLevel(logging.DEBUG)
+        logger.propagate = False
+
+        for handler in list(logger.handlers):
+            logger.removeHandler(handler)
+            handler.close()
+
+        screen = FakeScreenWithLog()
+        app = FakeThreadedApp(screen)
+
+        try:
+            handler = screen_support.configure_screen_log_handler(
+                logger,
+                app,
+                enabled=True,
+            )
+            self.assertIsNotNone(handler)
+
+            logger.info("hello pane")
+
+            self.assertEqual(1, len(screen.log_view.messages))
+            self.assertRegex(
+                screen.log_view.messages[0],
+                r"^ffx-test-screen-log-handler\s+INFO\s+\d{4}-\d{2}-\d{2} \d{2}:\d{2}:\d{2} \| hello pane$",
+            )
+        finally:
+            screen_support.configure_screen_log_handler(logger, app, enabled=False)
+            for handler in list(logger.handlers):
+                logger.removeHandler(handler)
+                handler.close()
+
 
 if __name__ == "__main__":
     unittest.main()