On Thu, May 07, 2015 at 22:03:02 +0200, [email protected] wrote: > > I'm not convinced that PCM can be stream-copied into an AC3 > > "container". > > what would be the right file format then?
A lot of formats are capable of carrying PCM. The WAV you tried should be okay (though I'm not sure how many streams it can carry). But using a newer (let me emphasize NEWER) version of ffmpeg, I am told: $ ffmpeg -f lavfi -i sine=440 -f lavfi -i sine=1000 -map 0 -map 1 -f wav /dev/null [...] [wav @ 0xa5cb5e0] WAVE files have exactly one stream That will be your issue. MOV containers can carry multiple PCM streams. Come to think of it, if you're looking for an appropriate container: Why don't you just leave the original file as is? It seems to carry those streams just fine? You notice: You are not specifying what you are trying to achieve precisely enough. > I am working in a bigger post-production facility and sharing customer > content is a huge No No. > Besides that are the clips 12GB in size. But if you tell me a way how > to preserve all the streams in the file and truncate the first second > of the clip, then I could send a clip. I'm not sure a MOV can be trucated (assuming the format of the input has anything to do with your issue. If you provide good service to a customer encountering problems, you will ask them to help you generate a short problematic sample which you may share. Moritz _______________________________________________ ffmpeg-user mailing list [email protected] http://ffmpeg.org/mailman/listinfo/ffmpeg-user
