Sounds goes progressively out of sync using tmpgenc

[lchiu7]

I have worked out a rather convoluted method to make SVCD's from TV recording. Best way would be to use my Hauppauge WinTV card and something that captures in avi format with lossless compression but when I do that, I lose a channel of sound and get crackles - but that's another story. (PS don't use VIA based MB's with Athlon XP's!)

So I record TV programs using PowerVCRII directly to MPEG2 but with high quality. Then I run the avi file(s) through dvd2avi to create the d2v and mpa file.

Finally insert the two files into tmpgenc with the SVCD template to create a file(e) that can be burnt to CD.

It all works fine except the sound which starts outin sync fine, gradually goes out of sync over the length of the video (sound falls behind the video). I have confirmed that this is a problem with the output file from tmpgenc, not an artifact of burning to CD.

Any ideas? This is pretty annoying as you can imagine

Thanks

Larry

[Triton]

You need to make a wave file in Virtual Dub and use that when you encode the movie in TMPGEnc that should help ya

[merkin]

I remember someone said in a post once that if you set the de-emphasis flag in the Audio section to 50/15ms it fixes audio sync drift problems. I've yet to try it out but you could give that a go and report back here!

[lchiu7]

You need to make a wave file in Virtual Dub and use that when you encode the movie in TMPGEnc that should help ya

That's what DVD2AVI does - creates the .mpa file which is bascially a wave file which gets fed into TMPGENc

Larry

[DEmberton]

Someone with more or less the same problem as me. Trying to convert MPEG2 from my Haupauge DTT decoder to SVCD using DVD2AVI and TMPEngPlus. Video works fine, but audio seems to be around half a second out of sync (late).

There's possibly a few glitches on the source, which apparently throws things out, but everything seems out of sync from the very start.

DVD2AVI writes the mpa file out as something like "MPA T01 DELAY -410ms.mpa". Now I could believe that 410ms is the amount it's out, so does anybody know why DVD2AVI does this? And should I be entering this 410ms into TMPEng somewhere, or using some other program to delay the audio by 410ms?

I don't really understand why this should be necessary, as the original plays fine.

Edit: And I tried the 50/15ms setting in TMPEng, but it didn't help.

Dave

[Will Hay]

.....PS don't use VIA based MB's with Athlon XP's!

Don't use Via chipsets when capturing video, full stop.
The latency problem is well documented and stopped for me as soon as I changed mobo's (incorportaing the SiS chipset).
Will

[merkin]

Someone with more or less the same problem as me. Trying to convert MPEG2 from my Haupauge DTT decoder to SVCD using DVD2AVI and TMPEngPlus. Video works fine, but audio seems to be around half a second out of sync (late).

There's possibly a few glitches on the source, which apparently throws things out, but everything seems out of sync from the very start.

DVD2AVI writes the mpa file out as something like "MPA T01 DELAY -410ms.mpa". Now I could believe that 410ms is the amount it's out, so does anybody know why DVD2AVI does this? And should I be entering this 410ms into TMPEng somewhere, or using some other program to delay the audio by 410ms?

I don't really understand why this should be necessary, as the original plays fine.

Edit: And I tried the 50/15ms setting in TMPEng, but it didn't help.

Dave

If the audio is out of sync by a constant margin (i.e. it doesn't drift), then it's easy to fix in TMPGenc. Go to Setting, Advanced, Source Range and then adjust 'Audio Gap Correct' accordingly... in your case try 410ms and see if that does the track. The problem I and lchiu7 have however is that the audio 'drifts' out of sync, so it's fine at the start but slowly drifts out, and at the end it's ridiculous. I believe it's this that the 50/15ms setting is supposed to fix, but I haven't had a chance to try yet.

[lchiu7]

.....PS don't use VIA based MB's with Athlon XP's!

Don't use Via chipsets when capturing video, full stop.
The latency problem is well documented and stopped for me as soon as I changed mobo's (incorportaing the SiS chipset).
Will

My problem with the Via based chipset is the interaction with sound cards - with the onboard CMI8738 sound I was getting terrible crackling. I switched to a Sounblaster Live 5.1 but while the crackling went down, it's still there. Guess my next machine is going to be a Pentium

Larry

[lchiu7]

Someone with more or less the same problem as me. Trying to convert MPEG2 from my Haupauge DTT decoder to SVCD using DVD2AVI and TMPEngPlus. Video works fine, but audio seems to be around half a second out of sync (late).

There's possibly a few glitches on the source, which apparently throws things out, but everything seems out of sync from the very start.

DVD2AVI writes the mpa file out as something like "MPA T01 DELAY -410ms.mpa". Now I could believe that 410ms is the amount it's out, so does anybody know why DVD2AVI does this? And should I be entering this 410ms into TMPEng somewhere, or using some other program to delay the audio by 410ms?

I don't really understand why this should be necessary, as the original plays fine.

Edit: And I tried the 50/15ms setting in TMPEng, but it didn't help.

Dave

If the audio is out of sync by a constant margin (i.e. it doesn't drift), then it's easy to fix in TMPGenc. Go to Setting, Advanced, Source Range and then adjust 'Audio Gap Correct' accordingly... in your case try 410ms and see if that does the track. The problem I and lchiu7 have however is that the audio 'drifts' out of sync, so it's fine at the start but slowly drifts out, and at the end it's ridiculous. I believe it's this that the 50/15ms setting is supposed to fix, but I haven't had a chance to try yet.

I just re-checked. The original video as captured by PVCRII is fine and in sync. But when I process it through tmpgenc (tried the 50/15ms thing) it slightly drifts out of sync with the sound falling behind. So a constant offset doesn't help.

It's pretty annoying as you can imagine

Larry

[DEmberton]

If the audio is out of sync by a constant margin (i.e. it doesn't drift), then it's easy to fix in TMPGenc. Go to Setting, Advanced, Source Range and then adjust 'Audio Gap Correct' accordingly... in your case try 410ms and see if that does the track.

Doh! Chalk this one up to bad GUI design in TMPEng, but I hadn't realised I could double click on the filters list to see extra properties, and of course source range on or off didn't sound like anything useful. Tried it one a quick clip and it seemed spot on. Trying a longer one now to see if I do get any kind of drift, but I suspect I have a few glitches in the source so that may have to do a bit of hack and slash to sort it out.

Thanks for the help.

Dave

[lchiu7]

If the audio is out of sync by a constant margin (i.e. it doesn't drift), then it's easy to fix in TMPGenc. Go to Setting, Advanced, Source Range and then adjust 'Audio Gap Correct' accordingly... in your case try 410ms and see if that does the track.

Doh! Chalk this one up to bad GUI design in TMPEng, but I hadn't realised I could double click on the filters list to see extra properties, and of course source range on or off didn't sound like anything useful. Tried it one a quick clip and it seemed spot on. Trying a longer one now to see if I do get any kind of drift, but I suspect I have a few glitches in the source so that may have to do a bit of hack and slash to sort it out.

Thanks for the help.

Well I have solved the problem. I didn't realise with tmpgenc plus 2.55 (probably 2.4 and above) it was able to open the mpeg file directly without dvd2avi (it can open certain mpeg files created by commercial encoders such as Cyberlink's. Now that the video and audio are the same file, there loss of sync has gone

Dave

I knew about those settings but since the sound drifts out of sync slowly, it's no use to me. In desperation I purchased the SVCD plugin for Nero thinking that I could just take a mpg file, insert it into Nero and have Nero convert to standard SVCD format. No joy, the sound is out of sync consistently (behind) and I am not sure how to fix that

Larry

[lchiu7]

If the audio is out of sync by a constant margin (i.e. it doesn't drift), then it's easy to fix in TMPGenc. Go to Setting, Advanced, Source Range and then adjust 'Audio Gap Correct' accordingly... in your case try 410ms and see if that does the track.

Doh! Chalk this one up to bad GUI design in TMPEng, but I hadn't realised I could double click on the filters list to see extra properties, and of course source range on or off didn't sound like anything useful. Tried it one a quick clip and it seemed spot on. Trying a longer one now to see if I do get any kind of drift, but I suspect I have a few glitches in the source so that may have to do a bit of hack and slash to sort it out.

Thanks for the help.

Well I have solved the problem. I didn't realise with tmpgenc plus 2.55 (probably 2.4 and above) it was able to open the mpeg file directly without dvd2avi (it can open certain mpeg files created by commercial encoders such as Cyberlink's. Now that the video and audio are the same file, there loss of sync has gone

Dave

I knew about those settings but since the sound drifts out of sync slowly, it's no use to me. In desperation I purchased the SVCD plugin for Nero thinking that I could just take a mpg file, insert it into Nero and have Nero convert to standard SVCD format. No joy, the sound is out of sync consistently (behind) and I am not sure how to fix that

Larry

I meant to quote this here rather than edit somebody's else

Well I have solved the problem. I didn't realise with tmpgenc plus 2.55 (probably 2.4 and above) it was able to open the mpeg file directly without dvd2avi (it can open certain mpeg files created by commercial encoders such as Cyberlink's, Ligos and Sony. Now that the video and audio are the same file, there loss of sync has gone

Larry

[joe444455555]

I have the same problem (audio gradually falling further and further out of sync. I tried the 50/15ms option in TMPGenc, no dice.
source (a DL) was also out of sync, wanna fix this.

[katchupoy]

I am also having the same proble...

One thing I noticed that if the VOB is one big file... no problem...

but if its several vob's then you run it through dvd2avi as one big file and encode it with tmpgenc... then there is the problem...

the problem here is not consistent... at first it is 100 miliseconds then at the last part of the 19 min video , its around 500 to 750 milliseconds.

[lchiu7]

That's interesting. My problem with the gradual drift out of sync was with mpeg files created by PowerVCR (I had enabled the hack so that PVCR outputs one large mpeg file rather than a bunch of 600mb chunks). Out of interest I took my copy of LOTR Extended edition, ripped that, ran disk 1 through dvd2avi to create the d2v and the wave files, and processed that through tmpgenc. I used a CVD template and processed all 6 vob files. The sound stayed in sync throughout so I am not sure what your problem is being caused by

Larry

[Will Hay]

[quote="lchiu7"]

.....PS don't use VIA based MB's with Athlon XP's!

My problem with the Via based chipset is the interaction with sound cards - with the onboard CMI8738 sound I was getting terrible crackling. I switched to a Sounblaster Live 5.1 but while the crackling went down, it's still there. Guess my next machine is going to be a Pentium

I upgraded my machine to an SiS chipset and maintained my SB Live 1024 Live and have a fanastic system.
Recently, on a 90 min recording, I lost 17 frames in total which, considering my rate of 25f/sec (UK) is pretty good.
I do have two 80gb Maxtor's on a Raid 0, and a fantastic ATI 64mb DDR ViVo I picked up for £25.00 on ebay.
I didn't want to lose the Maxtor G400 but never thought the ATI would be as good as it is.
Pentium's are not the only answer, trust me
I have a file which lowers pci latency for SB Live, let me know if you want it (PM me), it worked for me.

[lchiu7]

[quote="Silky31"]

.....PS don't use VIA based MB's with Athlon XP's!

My problem with the Via based chipset is the interaction with sound cards - with the onboard CMI8738 sound I was getting terrible crackling. I switched to a Sounblaster Live 5.1 but while the crackling went down, it's still there. Guess my next machine is going to be a Pentium

I upgraded my machine to an SiS chipset and maintained my SB Live 1024 Live and have a fanastic system.
Recently, on a 90 min recording, I lost 17 frames in total which, considering my rate of 25f/sec (UK) is pretty good.
I do have two 80gb Maxtor's on a Raid 0, and a fantastic ATI 64mb DDR ViVo I picked up for £25.00 on ebay.
I didn't want to lose the Maxtor G400 but never thought the ATI would be as good as it is.
Pentium's are not the only answer, trust me
I have a file which lowers pci latency for SB Live, let me know if you want it (PM me), it worked for me.

Actually my reply was slightly flippant! I sort of fixed the problem by downloading the KXProject SB Live drivers. Using them the crackling has gone so now I can make decent stereo recordings using PowerVCRII and output the video to SVCD (presumably DVD when I get a burner). The only remaining issues are
1. still can't capture uncompressed video using a standard WDM capture program like Virtual VCR - the right channel always cuts out
2. Having some problems getting the microphone recognised in Netmeeting using the KXProject drivers - says cannot control the volume level. I have even tried using the CMI8738 as the recording device and the SB Live as the playback device - still doesn't work (but perhaps need more experimentation here)

Other solutions could be
1. Get a non Via based MB like SIS or even AMD
2. Different sound card like a Turtle Beach

I think I already tried the PCI Latency patch (from George?) - that didn't fix my problem

Larry