[FFmpeg-user] Concatenate mp4/h264 files, some without sound track

Tim Hiles thiles at confex.com
Thu Nov 7 20:48:17 CET 2013

in windows I use this:

c:\ffmpeg\ffmpeg\bin\ffmpeg.exe -loglevel error -f concat -i filelist.txt
-c copy %finalname%

filelist.txt looks like this

# this is a comment
file 'C:\somepath\somefile.mp4'
file 'C:\somepath\somefile2.mp4'

Seems to work fine for me.

Tim Hiles  - A/V & Multimedia Specialist
The Conference Exchange - West Coast
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On Thu, Nov 7, 2013 at 10:36 AM, Laurent Polèse <laurent.polese at gmail.com>wrote:

> Hello
> I know this is covered in faq, but it didn't work for me.
> I use ffmpeg version 0.10.9
> I have 3 mp4 files to concatenate, ideally with no re-encoding.
> But the trick is that first and last file has no sound track.
> I tried the "mmcat" tool from burek, but I have sound issue.
> I tried to add first sound to the files with no sound track, it didn't
> help.
> I tried the concat filter, the MP4Box tool but I always have problems : the
> sound disappears, loose sync, image freezes, etc.
> Does anyone have in main a simple solution to just concatenate 3
> mp4/h264/AAC files, some of them without sound tracks ?
> Thanks a lot ;)
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> ffmpeg-user at ffmpeg.org
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