On Monday 23 January 2006 17:15, Steven M. Schultz wrote: > On Mon, 23 Jan 2006, Bob Stia wrote: > > OK ran mplex again with the new shifted.ac3. At least it did not fail > > immediately. Here is the result: > > Something's a bit weird with the input video I think: > > EasyStreet:/workspace # mplex -f 8 -o "movie.mpg" shrink.m2v shifted.ac3 > > > > INFO: [mplex] VIDEO STREAM: e0 > > INFO: [mplex] Frame width : 720 > > INFO: [mplex] Frame height : 480 > > INFO: [mplex] Aspect ratio : 16:9 display > > INFO: [mplex] Picture rate : 29.970 frames/sec > > INFO: [mplex] Bit rate : 9800000 bits/sec > > INFO: [mplex] Vbv buffer size : 229376 bytes > > Right up against the limit for DVD - as if "-b 9800" was used without > realizing there will be peaks that need to be taken into account.
Hi Steven, thanks for commenting. Every voice helps. That comment has taught me something. > > but > > > INFO: [mplex] Average bit-rate : 4631200 bits/sec > > INFO: [mplex] Peak bit-rate : 22742800 bits/sec > > Look at that bitrate spike! 22742800! I think the the input > video was encoded with a rate that was too high and there are > sections that exceed the VBV size of 220KB. The buffering can't > handle the rate spikes in the video stream, that gives the error. OK learned something else. > > What bitrate was specified when shrink.m2v was created? If 9800 was > used then that doesn't leave any room for peaks. I didn't specify anything in particular that I know of or realize. This is the command I used: It used to just work. tcextract -i INPUT.vob -t vob -x mpeg2 > movie.m2v > > Try using a slightly lower setting. Maybe 8500, if that works then > move up a little. OK, I guess I could figure out how to do that from the man page? > > Or if you want you can try using a higher bitrate and/or vbv size > with mplex (-r and -b respectively) but it may produce a stream > that won't play in all DVD players... If possible, I would like to find the problem and fix it rather than a workaround. Thanks for your interest. Bob S. ------------------------------------------------------- This SF.net email is sponsored by: Splunk Inc. Do you grep through log files for problems? Stop! Download the new AJAX search engine that makes searching your log files as easy as surfing the web. DOWNLOAD SPLUNK! http://sel.as-us.falkag.net/sel?cmd=lnk&kid=103432&bid=230486&dat=121642 _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
