AV Sync probs from home movie rips

[NitroStar]

Ok, this is how I am getting my 8mm & vcr tapes onto DVDs to play on my set top box:

1. Put on hard drive with Virtual VCR
2. Encode with TEMPGEnc : using TOOLame as audio engine and setting for 4800 kb/s. Making ES (Audio + Video) files with it.
3. TEMPGenc DVD Author to set up menus, author, then burn.

Plays fine and I fool around with the contrast and brightness and they even look better than original. But the audio is off. I think it get worse by the end of the DVDs.
Am I missing a step here? I don't quiet understand all the Demuxing & Muxing stuff. Thanks for any help.

[sacajaweeda]

When you capture with VirtualVCR make sure the resample dynamically option is checked on the AV Sync tab in settings. This will help keep everything sync'd better. Then load your AVI file into VirtualDub and pull up the file information (file>file information) and check the stream length for both the video and the audio. If theyare not the same, the difference is the offset you use to correct your sync problem using a delay.

The sync problem is usually because of a hardware issue; the internal clocks on whatever chipset your using for sound be it a pci card or onboard sound and your system's CPU are not the same. This gives you a constant delay that should be the same throughout the clip. If your sync problem gets progressively worse as the clip plays then it's probably something else like bad/dropped frames causing your sync problem. If that's the case then try capturing with a different codec or at a smaller frame size that won't be so taxing on your system resources.

HTH

[NitroStar]

Ok, I did some more trial and errors. Here is what I discovered:
If I use Virtual VCR and use Huffyuv 2.1.1 as the compression under the Video tab and YUY2 on the "Video Capture Pin compression settings", the resulting video plays fine in Windows Media Player 9 but stutters in VirtualDub 1.5.10 making the video lag behind the audio when it is studdering about a half second.

BUT, when I uncheck the "Use Compression" box, disabling Huffyuv 2.1.1 the resulting file is almost 3 times as large but the video plays fine in VirtualDub and in the edit portion of TMPGEnc DVD Author program. I think this will fix the final output, but here is my question now:

Why does Huffyuv cause this to happen? What are other options? What is a fix for the Huffyuv compression? I don't think I have enough hard drive to cap a 2 hour 8mm movie using the raw YUY2 alone.

And also, I am NOT dropping any frames while capturing using either setting. Just that using Huffyuv 2.1.1 causes studdering. But not in Windows Media Player 9.

[NitroStar]

bump

[sacajaweeda]

I don't know what the hell you've tried, or even if you tried what I suggested so I really can't be of much help to you now. Sorry.

PS, don't rely on simply watching your movie clips WMP9 or VirtualDub to determine audio sync. WMP9 is crap. You'll miss the bus more times than not with it. VirtualDub will lag if it's doing more than just handling an unaltered source file durring playback. If you're hell bent on mediaplayer, get the clone.

[NitroStar]

[quote="sacajaweeda"]I don't know what the hell you've tried, or even if you tried what I suggested so I really can't be of much help to you now. Sorry.

What do you mean you don't know what I tried?? I just told you that if I don't use Huffyuv and just cap to YUY2 alone that the video plays fine (no AV Sync probs). Of course I tried what you said. The Audio & Video lengths were off about .08 of a second. The playback was way worse than that. My last question was: Why does Huffyuv cause this, is there a fix, are there other option besides the huge file size of YUY2 alone that doesn't cause AV sync issues. If you don't know maybe someone else has experienced what I have...

[sacajaweeda]

Try the PICVideo MJPEG codec if space is a problem.