> to add to Adam's remarks... you CAN'T do a lossless transcode from a lossy > format to a lossy format. it's impossible. you can do what may seem an > imperceivable loss in quality, but inherent to lossy formats, any transcoding > done will loose quality. If you do any decrease in resolution, filtering, > etc, even more so. > > what the new SVN MPEG2->MPEG2 transcode can do when just doing commercial > cutting is to copy frames where possible, and do a reencode of frames that > require it around cut points only. I believe the quality level of this > reencode is set similar to the rest of the mpeg, maybe slightly better to > help preserve quality, Geoff would be better to explain what his work did.
I'm not asking to do lossy to lossy. I have DVB-T cards which receive MPEG2 signals broadcast at ~ 7Mbps. These are just dumped straight to disk as that's what DVB-T cards do. What I want to do is transcode these to smaller files - but in MPEG2 format, not MPEG4. This this would be a transcode from a high quality MPEG2 file to a lower quality, smaller size MPEG2 file. I'm trying to find out if that's possible. Sorry if I haven't made this clear earlier. Regards, Phill _______________________________________________ mythtv-users mailing list [email protected] http://mythtv.org/cgi-bin/mailman/listinfo/mythtv-users
