Whether or not it matters, my DVD player can't play SVCD's, so I multiplex the SVCD to VCD. It seems to work fine, but the sound and pictures become out of sync when I burn the mpg. The mpg itself is perfect when I preview it on my PC. So what can I do? I had the sound quality at 48000 Hz and 224 bits. Would that affect it? Should I try multiplexing it as a VCD MPEG 1 instead of VCD MPEG 1 non standard? Any advice would be appreciated.

-- Kevin (BrindA17@comcast.net), December 29, 2002

Answers

It has been my experience that most SVCD audio sync issues are caused by the video bit rate being too high. SVCD specs require that the video+audio bit rate not exceed 2724 Kbps. Since your audio is at 224, which is normal, your video bit rate can NOT exceed 2500, not once, and still be compliant. What did you encode with in DVD2SVCD? (You mentioned using that in another post.) Did you use TMPGenc? TMPGenc is notorious for spiking way above the maximum value you set it for. For example, I have seen TMPGenc set for a maximum of 2300 actually have a peak video bit rate > 3000. If you used TMPGenc, I would suggest that you try using a low bit rate, maybe around 2100. It will still spike way above that, but say if it spikes at 2800 instead of 3000, it might not cause audio sync problems. You could also consider using CCE with DVD2SVCD because it actually will observe the maximum bit rates you tell it to use and not go above that. Multiplexing as VCD MPEG 1 won't save you. In fact if you try, you will get horrible errors because what you are trying to mux is not a valid VCD. That's why you had to use VCD non-standard. You might be interested in the SVCD forum at http://network54.com/Hide/Forum/70438 This forum here is really only for VCDs and it's really better to ask SVCD and more technical questions in other forums.

-- Root (Root@yahoo.moc), December 30, 2002.

I used CCE and accidently created them with a video bitrate of 2530. I read afterwards on vcdhelp.com that my particular DVD player maxes out at 2500 (slaps forehead). That was most likely the problem. Should I make the bitrate under 2500? What would be best? Thanks!

-- Kevin (BrindA17@comcast.net), December 30, 2002.

I find when using tmpge that the sync is not always the best. Instead use virtual dub and save the sound as a wave file. then when you go to encode use the wave file for audio. always comes out perfect!! if you need more info I believe that vcd easy website has info on it or email me.

-- victorya wilde (victorya71@hotmail.com), January 03, 2003.