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-rw-r--r--youtube_dl/postprocessor/ffmpeg.py2
1 files changed, 1 insertions, 1 deletions
diff --git a/youtube_dl/postprocessor/ffmpeg.py b/youtube_dl/postprocessor/ffmpeg.py
index 8c5f7c43b..6f010a9c7 100644
--- a/youtube_dl/postprocessor/ffmpeg.py
+++ b/youtube_dl/postprocessor/ffmpeg.py
@@ -487,7 +487,7 @@ class FFmpegMetadataPP(FFmpegPostProcessor):
class FFmpegMergerPP(FFmpegPostProcessor):
def run(self, info):
filename = info['filepath']
- args = ['-c', 'copy']
+ args = ['-c', 'copy', '-map', '0:v:0', '-map', '1:a:0', '-shortest']
self._downloader.to_screen(u'[ffmpeg] Merging formats into "%s"' % filename)
self.run_ffmpeg_multiple_files(info['__files_to_merge'], filename, args)
return True, info