I, too, have been thinking about this lately. I looked at the GOPchop code, trying to find out how to just cut specified frames out of a recording. I believe GOPchop uses libmpeg2, so I looked into that, just to find that libmpeg2 has no documentation.
I've got my Recording-To-Dvd process down to 2 steps now, thanks to nuvexport and the mpeg2cut script, but I don't like how avidemux2 is a GUI and requires X. Basically, what I want is a program that works just like the mpeg2cut script (e.g. mpeg2cut infile outfile range_of_frames_to_keep) that is command line only. Heck, if we could get that working, a "MythArchive" module would be very feasible (to me anyways.) Just my .02 cents.... Josh On Fri, 14 Jan 2005 08:54:34 -0500 (EST), Cory Papenfuss <[EMAIL PROTECTED]> wrote: > It's been awhile since this has been discussed, but I'm wondering > if there's any status on this front. I just happened to look and see if > GOPchop had been updated since last time I used it, but it appears to have > died on the vine. It seems to have some issues, but it does have a nice > .cpp skeleton for parsing and clipping MPEG2 files at GOP boundaries. > I-frame clips would probably be adequate, but since they are still lossy > with missing P-frames, perhaps a transcode of a few frames around > cutpoints would suffice? > > I'm just offering food for thought for those more in the code. > Just for the record, however, the ivtv driver appears to always output the > same GOP length/format (15 frames/GOP IIRC). With a 2-pass reencode to > mpeg2 (e.g. with avidemux), I get varying-length GOPs. It's got potential > for better quality/bitrate than archiving to DVD right off the ivtv > card... might be a worthwhile option for any sort of "MythArchive" module > or something. > > -Cory > > > ************************************************************************* > * Cory Papenfuss * > * Electrical Engineering candidate Ph.D. graduate student * > * Virginia Polytechnic Institute and State University * > ************************************************************************* > > > _______________________________________________ > mythtv-users mailing list > [email protected] > http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users > > >
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