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-rw-r--r--youtube_dl/__init__.py15
1 files changed, 10 insertions, 5 deletions
diff --git a/youtube_dl/__init__.py b/youtube_dl/__init__.py
index ad5f13d2b..c482f9375 100644
--- a/youtube_dl/__init__.py
+++ b/youtube_dl/__init__.py
@@ -259,6 +259,16 @@ def _real_main(argv=None):
'key': 'FFmpegVideoConvertor',
'preferedformat': opts.recodevideo,
})
+ # FFmpegMetadataPP should be run after FFmpegVideoConvertorPP and
+ # FFmpegExtractAudioPP as containers before conversion may not support
+ # metadata (3gp, webm, etc.)
+ # And this post-processor should be placed before other metadata
+ # manipulating post-processors (FFmpegEmbedSubtitle) to prevent loss of
+ # extra metadata. By default ffmpeg preserves metadata applicable for both
+ # source and target containers. From this point the container won't change,
+ # so metadata can be added here.
+ if opts.addmetadata:
+ postprocessors.append({'key': 'FFmpegMetadata'})
if opts.convertsubtitles:
postprocessors.append({
'key': 'FFmpegSubtitlesConvertor',
@@ -276,11 +286,6 @@ def _real_main(argv=None):
})
if not already_have_thumbnail:
opts.writethumbnail = True
- # FFmpegMetadataPP should be run after FFmpegVideoConvertorPP and
- # FFmpegExtractAudioPP as containers before conversion may not support
- # metadata (3gp, webm, etc.)
- if opts.addmetadata:
- postprocessors.append({'key': 'FFmpegMetadata'})
# XAttrMetadataPP should be run after post-processors that may change file
# contents
if opts.xattrs: