Anne Wilson wrote: > I normally create DVDs, but occasionally the footage that I want to convert > is > very small, so this time I thought I would create an SVCD. This didn't work, > although the same m2v and mp2 files mplexed to DVD quality without a problem. > > What exactly caused the problem? > > The format used for SVCD is different from DVD.
> mplex -f 4 flat4.m2v flat4.mp2 -o flat4SVCD.mpg > INFO: [mplex] mplex version 1.9.0 (2.2.7 $Date: 2006/02/01 22:23:01 $) > INFO: [mplex] File flat4.m2v looks like an MPEG Video stream. > INFO: [mplex] File flat4.mp2 looks like an MPEG Audio stream. > INFO: [mplex] Video stream 0: profile 4 selected - ignoring non-standard > options! > INFO: [mplex] Found 1 audio streams and 1 video streams > INFO: [mplex] Selecting SVCD output profile > INFO: [mplex] Multiplexing video program stream! > INFO: [mplex] Scanning for header info: Video stream e0 (flat4.m2v) > INFO: [mplex] VIDEO STREAM: e0 > INFO: [mplex] Frame width : 720 > INFO: [mplex] Frame height : 576 > INFO: [mplex] Aspect ratio : 4:3 display > INFO: [mplex] Picture rate : 25.000 frames/sec > In SVCD the video frame size is defined as 2/3 D1: 480x576 @ 25 fps for PAL. > INFO: [mplex] Bit rate : 7500000 bits/sec > The max. bitrate for SVCD is ~2.6 Mbit/s > INFO: [mplex] Vbv buffer size : 229376 bytes > INFO: [mplex] CSPF : 0 > INFO: [mplex] Scanning for header info: Audio stream c0 (flat4.mp2) > INFO: [mplex] MPEG AUDIO STREAM: c0 > INFO: [mplex] Audio version : 1.0 > INFO: [mplex] Layer : 2 > INFO: [mplex] CRC checksums : no > INFO: [mplex] Bit rate : 28672 bytes/sec (224 kbit/sec) > INFO: [mplex] Frequency : 48000 Hz > The audio samplerate for SVCD is 44.1 kbit/s > INFO: [mplex] Mode : 0 stereo > INFO: [mplex] Mode extension : 0 > INFO: [mplex] Copyright bit : 0 no copyright > INFO: [mplex] Original/Copy : 0 copy > INFO: [mplex] Emphasis : 0 none > INFO: [mplex] SYSTEMS/PROGRAM stream: > INFO: [mplex] rough-guess multiplexed stream data rate : 7889048 > INFO: [mplex] target data-rate specified : 2788800 > ++ WARN: [mplex] Target data rate lower than computed requirement! > ++ WARN: [mplex] N.b. a 20% or so discrepancy in variable bit-rate > ++ WARN: [mplex] streams is common and harmless provided no time-outs will > Gert ------------------------------------------------------------------------- Take Surveys. Earn Cash. Influence the Future of IT Join SourceForge.net's Techsay panel and you'll get the chance to share your opinions on IT & business topics through brief surveys - and earn cash http://www.techsay.com/default.php?page=join.php&p=sourceforge&CID=DEVDEV _______________________________________________ Mjpeg-users mailing list Mjpeg-users@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/mjpeg-users
