Okay, here we go: http://www.pblue.org/myth/mpeg2stuff.tgz
Follow the directions in README to build it. The code has basically the same features as the last version I posted, but has been completely rewritten and more thoroughly tested. I'm still experiencing some weirdness with ATSC video, but it seems to be only in the last few frames. I still don't support discontinuous PTS, and haven't figured out an elegant way to do so yet. Replex doesn't support subtitles, so those won't work either. I haven't tried it on multiple audio-streams yet, as I don't have any mpegs that look like that, but it should be supported. There is one useful command line switch: -no3to2 This tells the utility to remove all 3:2 pulldown (telecine) and enforce a strict frame-rate. It should generate a MPEG2 stream which can be demuxed/remuxed cleanly is needed, though the picture won't be quite as smooth (3:2 adds additional half frames (fields), allowing for smoother playback). There is also a -fixup switch which will enforce correct PTS (turning on -no3to2 will automatically enable this) If a PTS discrepency is detected, extra I-frames are added to buffer the video stream to stay in sync with the audio stream. It turns out you can't use a P-frame here because there is no way to know which macro-blocks are present, and mpeg2 doesn't allow you to predict a macro-block which wasn't in the previous frame. I plan to add support for opportunistically using 3:2 instead of building frames when -fixup is set but -no3to2 isn't, but am not quite there yet. As I said in my previous mail, this utility uses: avformat to get ES frames libmpeg2 to process video frames (and decode the picture as needed) replex to multiplex the final result. It seems to work fine with myth's libmpeg2 and libav*, but I needed to patch replex to fix several bugs, so that is included in the above archive. I could really use some feedback on how well it works, and, perhaps example streams where it doesn't. .Geoff _______________________________________________ mythtv-dev mailing list mythtv-dev@mythtv.org http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-dev
