Losing Audio Sync Sometimes When Triming w/VideoStudio 6

[rkr1958]

I'm losing audio sync sometimes when I'm triming the beginning and ending parts of a video with Ulead VideoStudio 6.

I'm backing up my VHS tape collection to DVD and here's what I'm doing.

1) VHS ==> Sony TRV320 DV Camera via A/V ==> PC Via Firewire. (I bought an vcr for "my computer" specifically for this. Macrovision is not a problem (so far), I'm able to backup Disney and other VHS tapes this way. Even tapes (e.g., Disney) that the Sony WOULD NOT let me record to DV tape ... this method will allow me to capture them to my harddrive by passing them through by DV camera without a DV tape inserted).

2) Because I don't want to baby sit this process I generally have a few seconds at the front of the capture and several minutes at the end of the capture that I'd like to edit out. I'm using VideoStudio 6, which I purchased off of ebay for $20, for capturing. I'm getting AVI files ranging from 20 to 30 GB (90 to 130 minutes) in size. At this point the audio and video are still in sync at (or near) the end of the movie.

3) I then use Ulead VideoStudio 6 to trim the "clip" (large avi file) and then save that timmed file. The save is treated as a render but is fast (I guess) (30-minutes of so). I've done this two times. The first time the audio and video remained in sync. The second time (or movie) I lost sync. By the way, I've tired using VirtualDub for the trimming but VirtualDub is unable to get the audio stream.

4) One workaround, I've thought of, is to recapture the movie so that I don't have to trim out any video. However, I'd like to be able to trim and not have to go through the recapturing and baby stitting the capture to ensure that the video starts and ends at the correct places.

Any thoughts or suggestions are appreciated.

[Tommyknocker]

Since Virtual Dub cannot capture the audio stream, try using the Virtual Dub AC3 version.

[FulciLives]

Use VirtualDubMod to edit your DV AVI file. When you are done doing the trimming go to TOOLS then SCRIPT EDITOR

Now the VirtualDubMod Script Editor window pops up. Click on EDIT then IMPORT FRAMESET AS TRIMS

Now copy and paste this into an AviSynth AVS script.

The script doesn't need to be fancy. Just something simple. As an example:

AviSource("D:\capture.avi")
Trim(717,11507)

Now simply load this into your MPEG-2 encoder be it TMPGEnc or CINEMA CRAFT ENCODER etc.

However ... the nice thing about using AviSynth is that not only do you not have to re-save or re-render your original capture (a big plus) but you can also filters to help improve the video quality.

One such filter that works great with DV AVI captures is the ReInterpolate411 filter

Here is a link to thia AviSynth 411 filter:

http://www.trbarry.com/ReInterpolate411.zip

I think you will have to right click on this and then select SAVE TARGET AS ... to get this link to work.

Basically this filter helps with the conversion from DV AVI (which uses a 4:1:1 colorspace) to the MPEG-2 DVD format which uses 4:2:0

- John "FulciLives" Coleman