diff --git a/src/ffx/track_codec.py b/src/ffx/track_codec.py
index d6ec091..386f4a1 100644
--- a/src/ffx/track_codec.py
+++ b/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'}