sync problem with TMPGEnc DVD Author

[deedogz]

sync problem with TMPGEnc DVD Author

Before i authorize the file is fine but after authorizing when i play the put file in windvd the audio is out of sync.

please help

[Zeronada]

I am having the EXACT same problem. I just checked the "What DVD authoring tool" forum and there are like 42 people who use TMPGEnc DVD Author.

Has no one else had this experience/problem?

[MrMungus]

I am having the EXACT same problem. I just checked the "What DVD authoring tool" forum and there are like 42 people who use TMPGEnc DVD Author.

I'm working on figuring this out (trying some different MPEG-2 file configurations). In the meantime:

Has no one else had this experience/problem?

How are you creating MPEG-2 files? Directly from an MPEG-2 capture card? Hardware or software?

What bitrate is the video?

VBR or CBR?

What format/bitrate is the audio?

[FuzzyLemming]

i'm having the same problem.

using TMPGenc DVD author 1.5.15.49, importing MPEG1 files (all standard 352x240,29.97fps,1150k). some files in the set work perfectly, some don't.

i thought it was a sample rate problem, so i tryied re-encoding the audio and manually converting to 48k and re-multiplexing back in, but then TMPGenc gives me a bufferunder-run error ever time, and the VOB file is still out of sync. any ideas? the MPG file may be corrupt somehow, but plays ok before authering. i'm willing to try another authoring tool, but DVD-labs doesn't handle MPEG1 files properly, and some others aren't downloadable....

[Zeronada]

How are you creating MPEG-2 files? Directly from an MPEG-2 capture card? Hardware or software?
A: with a PVR 250 card and SnapStream

What bitrate is the video?
4000000 bits per second

VBR or CBR?
CBR

What format/bitrate is the audio?
48000 hertz
224000 bits per second

See anything that looks wrong?

[MrMungus]

How are you creating MPEG-2 files? Directly from an MPEG-2 capture card? Hardware or software?
A: with a PVR 250 card and SnapStream

What bitrate is the video?
4000000 bits per second

VBR or CBR?
CBR

What format/bitrate is the audio?
48000 hertz
224000 bits per second

See anything that looks wrong?

Looks OK.

I just did a test. I captured about an hour of video, but at a lower bitrate (4800 - 6200 Kbps VBR) and made some cuts and created some chapter points in TMPGEnc and it created a perfect VOB. So I'm wondering if the higher bitrate of the file I had a problem with is the problem...which it shouldn't be.

Are you trying to use multiple files to create one DVD? This test I just did was using only one file...I'll test that next.

Well, that didn't work. I tried doing the cuts with only one file -- the higher-bitrate original that gave me problems earlier. Still have sync problems.

Next I'll try using only one file with no cuts or chapters.

That didn't work. Still losing audio sync.

I'm going to try another source at the higher bitrate to see what happens. I'll let you know.

[Zeronada]

Mr. Mungus,

After a lot of searching on the net last night, I think I have a solution.

While my solution was found on a site that mostly concerned SnapStream (the software I use to get my caps) the *idea* behind the problem may still apply to the problem we are having.

Here is the link to the thread I found: http://discuss2.snapstream.com/vb/showthread.php?s=&threadid=8111

It seems that when you go about slicing the commercials out of a cap, the program you are using (or your capture program) may be encoding the new files with a slightly different audio format than what DVD Author wants to use.

The solution that the people on the SnapStream thread propose is that you use Womble to cut out your commercials and reencode your show (takes about 5 minutes)

I tried it last night with a clip that was already messed up, and it actually fixed the file well enough so that the resulting DVD was just barely out of synch. Today I'm going to try it on clips that I have not already edited to see if they result in perfectly synched audio clips.

I'll post my results.

[FuzzyLemming]

MPEG-vcr seems to help ... i posted elsewhere about how to fix/mux then re-sync the MPG1 files i've tried, which seems to work so far.

https://www.videohelp.com/forum/viewtopic.php?t=201839

https://www.videohelp.com/forum/viewtopic.php?t=201659

[MrMungus]

Mr. Mungus,

After a lot of searching on the net last night, I think I have a solution.

While my solution was found on a site that mostly concerned SnapStream (the software I use to get my caps) the *idea* behind the problem may still apply to the problem we are having.

Here is the link to the thread I found: http://discuss2.snapstream.com/vb/showthread.php?s=&threadid=8111

It seems that when you go about slicing the commercials out of a cap, the program you are using (or your capture program) may be encoding the new files with a slightly different audio format than what DVD Author wants to use.

The solution that the people on the SnapStream thread propose is that you use Womble to cut out your commercials and reencode your show (takes about 5 minutes)

I tried it last night with a clip that was already messed up, and it actually fixed the file well enough so that the resulting DVD was just barely out of synch. Today I'm going to try it on clips that I have not already edited to see if they result in perfectly synched audio clips.

I'll post my results.

Hmmm. Then what I'll do is take a closer look at the audio on the original files vs. the audio on the resulting VOB files. I'm still thinking it's bitrate-related, though, as I think I can successfully create a VOB file with good sync as long as the VBR bitrate is betwee 4,000 and 6,000 Kbps. I'm doing another try now to see if I can consitiently encode a file at that bitrate.

[MrMungus]

MPEG-vcr seems to help ... i posted elsewhere about how to fix/mux then re-sync the MPG1 files i've tried, which seems to work so far.

https://www.videohelp.com/forum/viewtopic.php?t=201839

https://www.videohelp.com/forum/viewtopic.php?t=201659

Thanks! I'll check it out.

[FuzzyLemming]

the above method i posted seems to work for 'shifted' time sync problems. for progressive sync problems (at least for my MPG1 files), this sample rate fix seems to work: http://club.cdfreaks.com/showthread/t-59487.html

[MrMungus]

the above method i posted seems to work for 'shifted' time sync problems. for progressive sync problems (at least for my MPG1 files), this sample rate fix seems to work: http://club.cdfreaks.com/showthread/t-59487.html

Ugh. I don't want to do any fixing.

Anyway, I was able to get a good VOB just now by using 4000Mbps CBR instead of VBR. I don't know if the problem is with the VBR files that the PVR-250 is creating or not.

Correction: I created VOBs using Ulead Movie Factory and they did work in the W2K DVD Player.

Could the problem be TMPG DVD Author trying to encode VBR?

[MrMungus]

Update: According to this guide https://www.videohelp.com/tmpgenc.htm#problems TMPGEnc DVD Author has a problem with VBR MPEG-2 files that have MP2 audio (DVDLab appears to have the same problem since it's giving me audio sync problems, too).

Did another test and Ulead DVD Movie Factory appears (again) to be able to create DVDs with perfect audio sync using the same source files as TMPGEnc DVD Author and DVDLab.

Questions:

1. Capture programs for the PVR-250 that will let me capture to ACM or LPCM audio instead of MP2?

2. Authoring programs other than Movie Factory that will let me use VBR MPEG-2 files with MP2 audio as the source and maintain lip sync?

3. A quick way to convert an MPEG-2 file's MP2 audio to AC3 or LPCM (or maybe a slow way while authoring)?

TIA