[FFmpeg-user] concat issue

johnd john at jjdev.com
Wed Jan 23 02:30:43 CET 2013

On Wed, Jan 23, 2013 at 12:28:57AM +0000, Liam Condron-Farnos wrote:
> The concat protocol works at the file level, and as such it only works with
> a select few container formats. MP4 is not one of those formats; so you can
> either convert your files to mpeg transport streams, or use the concat *
> demuxer* instead.

I'm using AAC for audio, so that rules out mpeg right?  Also, if I cut
to .ts the audio and video become different lengths...

I get this after playback (with mplayer)

Starting playback...
Unsupported PixelFormat 61
Unsupported PixelFormat 53
Unsupported PixelFormat 81
Movie-Aspect is undefined - no prescaling applied.
VO: [xv] 320x180 => 320x180 Planar YV12 
A:   3.4 V:   5.2 A-V: -1.830 ct: -0.187 115/115  2%  0%  0.4% 0 0 
A:   4.1 V:   6.3 A-V: -2.284 ct: -0.249 149/149  2%  0%  0.3% 0 0 

and when I try to concat the ts files, it seems to work but when I play
back the audio and video are out of sync

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