Goldwave - Timewarp - now audio sync is worse?

[kosarx]

Alright, I've been searching for an answer to my audio syncing issues, and I did find a lot of stuff, incuding the Goldwave Timewarp feature. But it seems to have made my problem even worse. I'm sure I am doing something wrong.

Here's what I am doing:

1. Convering a .tivo file to .mpg with DirectShowDump. Audio and video seem perfect.
2. Edit .mpg with Womble MPEG2VCR. Audio and video still synched.
3. Importing to DVD Lab, automatically demuxes into .mpv and .mpa

With the steps above, the audio GRADUALLY goes out of sync toward the end, but only slightly.

Now, with goldwave:

1. I selected the .mpg file, and it pulled the audio from it. (Is this where my problem is?).
2. I choose Timewarp and matched the time to what the time was for the video in DVD Lab.
3. Saved to .wav
4. Converted to .ac3 using BeLight
5. Import .ac3 back into DVD Lab
6. Audio sync is worse.

If anyone can see the issue and suggest alternatives, that would be great!

Thanks!!

[stantheman1976]

If it seems to go out of sync after editing the mpeg try VitualDub-MPEG2 and see if that meets your editing needs. Also, for some strange reason after DVD Lab demuxes a file it almost always shows the audio and vidoe length being slightly different, but they really aren't. This happens to me all the time. Don't trust what DVD Lab says about the length unless you compile a disc and it's out of sync. So try these steps and see if it works:

1. Change your .tivo to .mpg
2. Edit with VirtualDub-MPEG2
3. Author with DVD Lab

If this works it will eliminate needing to re-encode the audio.

[kosarx]

After I edit in VirtualDub MPEG, can I save it as an MPEG, or do I need to save it as an AVI?

Thanks!

[kosarx]

Also, when adding the asset to DVD Lab, do I let it demux into elemantary streams, or skip that? Thanks again!

[guns1inger]

Hwne outputting from virtualdubmod, use Direct Stream Copy (assuming no filters have been used) and should be mpeg2. If you use any filters then you will have to frameserve to an encoder to get your mpeg2 video back.

I recommend strongly that you let DVD Lab Pro demux. It works best with elementary streams.

[stantheman1976]

After I edit in VirtualDub MPEG, can I save it as an MPEG, or do I need to save it as an AVI?

Thanks!

I thought it could save back as MPEG2, but apprently you can only edit the MPEG and then save is as AVI. I don't see how MPEGVCR could cause any sync problems. I've used it a thousand times and never had any problems. Are you previewing the final output on your PC or burning to disc and checking on your TV?

Convert your .tivo file to .mpg and edit with MPEGVCR.
Import into DVD Lab and let it demux the streams.
If DVD Lab says one stream is a second or two different than the other ignore it. I get this EVERY time I author a DVD.
Burn it to a disc and check it on your DVD player.

I can't tell you how many times I've compiled a project with DVD Lab and when I viewed it on my PC it did all kinds of crazy stuff, but when I put it on a disc and played it on my TV it worked fine.

[kosarx]

Hwne outputting from virtualdubmod, use Direct Stream Copy (assuming no filters have been used) and should be mpeg2. If you use any filters then you will have to frameserve to an encoder to get your mpeg2 video back.

I recommend strongly that you let DVD Lab Pro demux. It works best with elementary streams.

I'll try the VDub (I have VDubMPEG, is that the same as VDub MOD?).

I do let DVD Lab Pro demux, but it didn't seem to help.

[kosarx]

After I edit in VirtualDub MPEG, can I save it as an MPEG, or do I need to save it as an AVI?

Thanks!

I thought it could save back as MPEG2, but apprently you can only edit the MPEG and then save is as AVI. I don't see how MPEGVCR could cause any sync problems. I've used it a thousand times and never had any problems. Are you previewing the final output on your PC or burning to disc and checking on your TV?

Convert your .tivo file to .mpg and edit with MPEGVCR.
Import into DVD Lab and let it demux the streams.
If DVD Lab says one stream is a second or two different than the other ignore it. I get this EVERY time I author a DVD.
Burn it to a disc and check it on your DVD player.

I can't tell you how many times I've compiled a project with DVD Lab and when I viewed it on my PC it did all kinds of crazy stuff, but when I put it on a disc and played it on my TV it worked fine.

I view the final DVD on my PC and on TV. Both are out of sync. Before authoring, the MPEG which is edited with MPEG2VCR is fine. I use MPEG2VCR for everything else I do and it is perfect, so I share the same disbelief. I'm wondering if it has something to do with this being a .tivo file, converted to MPEG?

I do let DVD Lab Pro demux, and the snyc problem is still there. I tried it without demuxing and it is still there.

I do appreciate all of the help! Please keep the suggestions coming!

[kosarx]

Interesting:

When I play my edited MPEG with Windows Media Player, it is snyced. In MPEG2VCR, it is synced.

When I play it in VirutalDub-MPEG2, it is out of snyc towards the end.

???

[stantheman1976]

I wish I had the solution. Maybe going from a .tivo file to .mpg file causes some problem. That would be my guess since I've used the same exact programs you're using numerous times and never had a problem.

[kosarx]

I wish I had the solution. Maybe going from a .tivo file to .mpg file causes some problem. That would be my guess since I've used the same exact programs you're using numerous times and never had a problem.

Actually, no.

I didn't mention this, but when I change the header of the file to 720 resolution, I can import it into Encore. I can't add chapter points, but I can add a menu and make a DVD folder. When I burn that, there is no audio sync issues. Before I burn to DVD, I have to change the header back to 480x480 resolution.

I wonder if I should rip that newly burned DVD, reauthor it, and see if I can add chapters to that new MPEG in DVD Lab? That sounds like a big roundabout way to get this right!