Ulead authoring throws audio out of synch

[Capmaster]

The tool is called PVAStrumento and (among other things) it can repair mpegs. I look forward to seeing if it will help the audio drift problem.

I think PVAStrumento's strengths are more in reporting errors than in actually fixing them. It's good for a quick look at the PTS values. I've gotten back some really funky-behaving MPEGs when I've let PVAS try to fix them

[Lexor]

late to the party, but I think I may have something to contribute...

using Ulead Video Studio 7 SE, I am having regular audio sync problems.

source material has been mpeg2 captures from Leadtek Winfast VC100XP, and also DV from my Sharp DV viewcam. there is absolutely nothing wrong with the source mpeg2 or DV files.

it's extremely frustrating -- luckily I'm only creating .iso files and mounting them instead of burning discs... the only thing I'm wasting is rendering time.

I had success once recently, by trying to match the video and audio settings to my source material.

although his blame and his tone are faulty, it seems Jerry Jones advice may be correct: match the source audio settings.

when I converted the MPEG Audio to LPCM, it was way out of wack. when I had a different MPEG Audio bitrate for the finished render, again it was way off.

this is disappointing at best, as I wonder what would happen if I threw various source material at the Ulead app.

needless to say, I am now shopping for other authoring apps from different vendors.

[Tom Roper]

Everybody's circumstances are different, but I had an mpeg file with perfect audio sync, until it was authored to DVD, whereupon it was out of sync.

I had used Womble MPEG Video Wizard to edit out the commercials in the mpeg before authoring. Womble is frame accurate. In a software mpeg player, the audio sync was perfect. After DVD authoring, out of sync.

I've learned a method for perfect audio sync after DVD authoring by letting the authoring software itself cut the commercials from the unbroken mpeg stream, instead of the Womble editor. The authoring software does not have the same frame accurate precision of the Womble editor because it only cuts on "I" frames, but therein may be the explanation for why the audio sync also stays locked. All I know...works for me.

The authoring software is TMPGEnc DVD Author.

[buzzinhornets]

so what's the final verdict here? i have the same problems.. i converted my original .avi to 48khz in vdub, encoded with tmpgenc, stuck in ulead, and outta synch... will tmpgencdvdauthor help me?

[Nelson37]

Major methodology problem here. Many people are stating they have "absolutely perfect MPG files". Exactly how are you determining this?

Just because the file behaves correctly in one portion of one program does NOT mean the file is perfect, more likely that that particular section of that particular program either ignores or corrects the error.

I am reasonably certain that many of these problems are due to the Padding Stream. Do a search on my name and that phrase for more info.

Interesting note on PVAStrumento. Never got anything useful from that prog, but at one point, I think selecting "discard invalid GOPs" or something similar, out of a 2-hour cap it created a file which was nothing but commercials. Cannot confirm that it contained ALL the commercials, but definitely most of them and no movie whatsoever.

[buzzinhornets]

well... finally got something... had a divx video (mp3 cbr audio) file... ulead messed things up (moviefactory 2)... so tad made nice .vob files without losing synch...

used virtualdub to convert the audio to 48khz, saved as .wav ...then i encoded to vcd with tmpgenc plus (video only and .wav file) to an .mpg ...then used tmpgenc dvd author to make .vob and burn ...finally a synched dvd-vcd