On Sat, Dec 27, 2014 at 7:35 AM, Tomas Härdin <tomas.har...@codemill.se> wrote:
> On Sun, 2014-12-21 at 17:46 -0800, Mark Reid wrote: > > hi, > > > > Media Composer generates audio OPAtom mxf files that don't have index > segments. > > All the uncompressed pcm audio essence data contained in a single KLV > packet. > > > > This is my initial attempt to get demuxing working, I'm not too familiar > with demuxing > > audio or generating packets. I'm sure I'm not setting pts and dts > correctly. > > Using the mxf_read_packet_old function also works too but it reads the > entire > > essence KLV packet in to memory and these mxf files can be gigs. > > > > I haven't seen any raw video data encoded the same way yet, so this > patch only > > enables demuxing uncompressed pcm audio mxf files without indexs. > > > > I uploaded a sample mxf encoded to ftp://upload.ffmpeg.org/incoming > > > > opatom_missing_index.mxf > > > > I can also provide more samples if need. > > Have you looked at what mxf_handle_small_eubc() does? I feel this should > work similarly. > I'll take a look at a eubc sample and see if its a similar thing. The real problem I'm having is this OPAtom file doesn't have a index table, mxf_read_packet and mxf_handle_small_eubc need one. I'm thinking maybe I could generate a proper index table so that everything can continue as usual and not implement a new read packet function? I'll play around a bit more and see if I can come up with something better, I'm still trying to wrap my head around edit_unit_absolute_offset. Thanks for taking the time to review. _______________________________________________ ffmpeg-devel mailing list ffmpeg-devel@ffmpeg.org http://ffmpeg.org/mailman/listinfo/ffmpeg-devel
