All: For some time, I've been trying to figure out why my SVCDs are very jerky, yet my VCDs look fine. I use an ATI All In Wonder 7500 card, MMC 7.6 to capture to AVI, PIC Motion JPEG compressor set on quality level 19 to compress the avi on capture, and tmpgenc to encode to SVCD/VCD. I've posted my problem a couple of times, but none of the answers have helped me, so I have continued to throw CD-Rs and frustration at the problem all weekend and have found something interesting. I'm posting this here, not as a question, but as advice for anyone with the same problem.
When capturing the avi directly from cable, the problem always exists. When capturing from VCR using component video, the problem never exists. My solution for now, is to record what I need to capture, onto VHS in SP mode, then connect the VCR to the AIW card using the component video connectors, and capture to avi. I don't know if it's the component video connection that fixes the issue, or what, but everything I have done this way looks fantastic. I was worried about the degradation in quality going from VHS to SVCD, but they look great, I can't tell the difference (except there is no jerkiness now).
I also have an audio synch issue every time I capture anything with MMC 7.6. I've fooled around with the various methods of synching them, but find the easiest method of all is to load the avi into VirtualDub, cut out all the commercials, then go to Audio, Interleaving, and enter a value into the Audio Skew Correction box. Play the avi in VirtualDub, and if the audio still isn't synched, try again until it is. Once it is, frameserve it to tmpgenc. This is the fastest, and most convenient way I've found to edit commercials and fix audio synch problems at once. Editing the commercials obviously has nothing to do with the audio synch.. I just added it in because it's easy to do while your are in VirtualDub.
I hope this helps some folks having the same troubles I've had.
Jeff
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