How do I merge two videos and increase sound volume using Avconv?

Question

I'm trying to merge two cd-s into 1 file and also boost sound volume 200%, I tried this using avconv tool, but I only got cd1 and without an boost in sound:

nohup avconv -i cd1.avi -i cd2.avi -vcodec libx264 -acodec libvo_aacenc -r 30000/1001 -vol 512 merged.mp4

I used same syntax as for ffmpeg, any ideas why it didn't work? I can't find documentation for -vol for avconv. and also info about merging files is scarce.

Please show your ffmpeg command and the complete ffmpeg console output. — llogan, Jun 23 '13 at 01:32
@LordNeckbeard I don't have ffmpeg anymore, it was replaced by avconv on ubuntu. So I figured both tools have same devs and they are same software essentially, I used ffmpeg flags. — , Jun 23 '13 at 05:03
Both tools do not have the same developers and there are differences. See Who can tell me the difference and relation between ffmpeg, libav, and avconv? — llogan, Jun 23 '13 at 19:24

score 0 · Answer 1 · answered Jun 24 '13 at 05:55

avconv does not support concatentation (yet, patches welcome). The ways to work around this are e.g.

use mplayer(2) with -vo yuv4mpeg to decode your two video into a pipe, make avconv read from this pipe.
encode the two videos separately, then use mkvmerge to merge them.

How do I merge two videos and increase sound volume using Avconv?

1 Answers1