On Thu, May 21, 2015 at 17:14:13 +0200, Nikolas Borrel-Jensen wrote: > I’m concatenating two AAC encoded movies in a mp4 container as
AAC? Are you sure? One doesn't even have an audio track. I'm not sure how the concat demuxer handles that. But anyway: > ffmpeg -f concat -i /concat_scripts -c:a copy -c:v copy output.mp4 > > but I get a bunch of error messages like > > [mp4 @ 0x7fbc61821400] st:0 PTS: 5433 DTS: 5412 < 35774 invalid, clipping > [concat @ 0x7fbc61801200] Invalid stream index 1 > [mp4 @ 0x7fbc61821400] st:0 PTS: 5453 DTS: 5432 < 35775 invalid, clipping You are requested to post the complete command line and the full, uncut console output. And that for many very good reasons. One of them: I suspect you are using a wrong or old version of ffmpeg. That's why the other common request is for you to use as new a version of ffmpeg as possible. Recent binary builds from git are available for many platforms, if you can't build yourself. With my recent ffmpeg, I get: [...] Press [q] to stop, [?] for help [concat @ 0x9e15d60] New audio stream 0:1 at pos:44 and DTS:3.10168s [mp4 @ 0x9e1fb40] Non-monotonous DTS in output stream 0:0; previous: 35600, current: 1822; changing to 35601. This may result in incorrect timestamps in the output file. [mp4 @ 0x9e1fb40] Non-monotonous DTS in output stream 0:0; previous: 35601, current: 1842; changing to 35602. This may result in incorrect timestamps in the output file. [mp4 @ 0x9e1fb40] Non-monotonous DTS in output stream 0:0; previous: 35602, current: 1862; changing to 35603. This may result in incorrect timestamps in the output file. The resulting file does _not_ play well for me, but: That's probably a different issue. I don't have the solution for that and leave that question open. Incidentally, what works for me is the MPEG-TS method described here: https://trac.ffmpeg.org/wiki/Concatenate#protocol But the audio from the second file incorrectly starts at the beginning of the resulting video, it seems the concat protocol doesn't handle that as expected. Your intro video would need some blank audio to fill the gap (either inserted when you generate the intro, or generated by ffmpeg during your conversion to match the second video). Moritz _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
