On Mon, May 17, 2021 at 23:34:45 +0100, Simon Brown wrote: > Thank you for your reply. If it is the bitstream filter could you point me > to the relevant source file that is responsible for this filter?
Sure, it's here: https://github.com/FFmpeg/FFmpeg/blob/master/libavcodec/aac_adtstoasc_bsf.c > mp4info doesn't deal with TS, as you surmise. FFMpeg reports the output > file as AAC (not LC). I'm not sure VLC gives that detail. But given that > the ffmpeg processor and the mp4info program both seem to concur when there > is or isn't AAC-LC I'm not sure there is much value in trying a third > tool. You could also try mediainfo. I also found a tool capable of parsing and deconstruction AAC headers (https://p23.nl/projects/aac-header/), but I don't trust it since it isn't capable of recognizing e.g. HE-AACv2 (though I haven't taken the time to understand all the headers myself). I couldn't reproduce the loss of this information with the input samples I have. Can you share your input file? Since it's an MPEG-TS. perhaps the first MB (or five) suffice. > I will download the latest prebuilt binaries for Windows and give it a try > with those. I'd still be interested in the source file responsible as the > version on the embedded system I'm using is not the most recent build, and > rebuilding for that isn't something I want to do at this stage. I understand. Cheers, Moritz _______________________________________________ ffmpeg-user mailing list ffmpeg-user@ffmpeg.org https://ffmpeg.org/mailman/listinfo/ffmpeg-user To unsubscribe, visit link above, or email ffmpeg-user-requ...@ffmpeg.org with subject "unsubscribe".
