On 01/08/17 19:05, Jan Ekstrom wrote: > Hi, > > On Tue, Aug 1, 2017 at 3:22 PM, David Griffiths > <david.griffi...@gmail.com> wrote: >> Given an MPEG1/2 stream, this bitstream filter can be used to modify >> the sequence headers. The most common use would be to change the >> aspect ration without the need for re-encoding. Some MOD files have >> the aspect ratio incorrectly set to 4:3 >> (see https://en.wikipedia.org/wiki/MOD_and_TOD). > > Thanks for the contribution, but this looks like a limited version of > https://lists.libav.org/pipermail/libav-devel/2017-July/084528.html , > which seems to contain support for MPEG-2 bit stream filtering as > well. I'm intending to bring this across myself soon. It's slightly awkward because it's all written against Alexandra's bitstream API and would need to be changed to get_bits here. (I was hoping the API would come at some point, but apparently people here are generally against it. Oh well.)
Anyway, I finished off a half-written MPEG-2 metadata filter which will do the stuff described here: <https://lists.libav.org/pipermail/libav-devel/2017-August/084563.html>. I've ignored MPEG-1 so far, but it would probably be easy to add if anyone cares. - Mark _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
