Adds Q/P values to output file metadata

src/ffx/ffx_controller.py

@@ -171,6 +171,18 @@ class FfxController():
             return [outputFilePath]
 
 
+    def generateEncodingMetadataTags(self, videoEncoder: VideoEncoder, quality, preset) -> dict:
+        metadataTags = {}
+
+        if videoEncoder in (VideoEncoder.AV1, VideoEncoder.H264, VideoEncoder.VP9):
+            metadataTags["ENCODING_QUALITY"] = str(quality)
+
+        if videoEncoder == VideoEncoder.AV1:
+            metadataTags["ENCODING_PRESET"] = str(preset)
+
+        return metadataTags
+
+
     def generateAudioEncodingTokens(self):
         """Generates ffmpeg options audio streams including channel remapping, codec and bitrate"""
 
@@ -261,6 +273,11 @@ class FfxController():
 
 
         preset = presetFilters[0]['parameters']['preset'] if presetFilters else PresetFilter.DEFAULT_PRESET
+        self.__context['encoding_metadata_tags'] = self.generateEncodingMetadataTags(
+            videoEncoder,
+            quality,
+            preset,
+        )
 
 
         filterParamTokens = []

src/ffx/media_descriptor_change_set.py

@@ -295,6 +295,9 @@ class MediaDescriptorChangeSet():
                                                     + f":{trackDescriptor.getSubIndex()}",
                                                     f"{removeKey}="]
 
+        for tagKey, tagValue in self.__context.get('encoding_metadata_tags', {}).items():
+            metadataTokens += [f"-metadata:g", f"{tagKey}={tagValue}"]
+
         return metadataTokens