Lip sync problem in DVD workshop 2.2

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Ian Rietschel

Lip sync problem in DVD workshop 2.2

Post by Ian Rietschel »

I have been using for the last year Adobe premier pro V1.5 to edit with and capture with and use a Matrox RTX100 capture board and Matrox codec to capture the MiniDV tapes. I have been using Canopus Procoder Express V1.12 to make the mpeg2 files from the time line for a longer time. I always use 2 pass varable bit rate to retain quality, program stream for the encode, this job 7000 max bit rate. I use DVD Workshop 2.2 to author the DVD (make menus). This method has always worked for me without a glitch but this last job a wedding (66 minute video) has all of a sudden (out of all other jobs, for no reason, I dont know why) towards the end, has some lip sync inaccuracies. I have retried re-encoding to a lower bit rate and also did not include, in the 2nd try, the menus as a test but still audio is still out of sync on the DVD. The audio on the time line in Premier Pro 1.5 is in sync always. Each mpeg2 I make plays back in windows media player in audio sync. The video preview in DVD Workshop in the finish stage plays back in sync but when it gets burned to DVD disc and I play the DVD back it is out of sync. I have tried doing the same procedure with another job I had on the computer and that is perfect (no audio sync problems). it seems to be that there is something different about this job that I dont Know what is causing the audio sync to drift towards the end. Please does any one know of any thing I can try to overcome this? I am new to this forum.
sjj1805
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Post by sjj1805 »

There are plenty of posts regarding this issue on this forum.
very briefly the problem dos not lie with DVD WS2, it lies in your editing software. Your video contains what are terms Program Time Stamps (PTS)
which whilst in its MPEG format allow the DVD viewing software to keep the audio and video in synch.

As soon as you convert the MPEG into a VOB file the PTS are all discarded and so you end up with an out of synch problem. You have to fix the error in the original MPEG before you make the DVD VOB files.

MPEGs are not designed to be edited unless you use a specialist MPEG editor such as Womble. Think of an MPEG as the video equivalant of a stillimage JPG - its is compressed and already has had lots of bits discarded so as to reduce the file size.

Normal video editors such as Video Studio or Media Studio are designed to work with AVI files. think of an AVI as the video equivalant of a still image BMP - larger in file size.

Most out of synch problems in MPEGs occur where you have inserted transitions - such as if you have recorded a TV show and cut out the adverts, then joined the two halves together with a fade or other transition.

You may be able to salvage your out of synch problem by running your edited video through either Womble or Video Redo.
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Post by skier-hughes »

This doesn't sound like that problem though, as he makes no mention of editing the mpeg files.
I follow this same path, although I use a canopus storm to capture, premiere 6.5 to edit, procoder express to encode with WS2 to author and produce the AC3 audio.
I've never had OOS issues.
What audio settings did you use in Procder and in WS2?
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