Virtualdub...

[Ryo94]

I have a video, I cut the video at the frame number 432 setting as start frame, and cut again at frame number 7076 setting as end, but the damned virtualdub (at diference of Premiere or Ulead) insted cut by frames cut by keyframe, resulting a disaster because the final video always start or end 15 or 20 frames before or later than what I want. Why? Why?? Why??????????????????
I can use Premiere or ulead media studio but these programs don't support divx 2pass.

[Enchanter]

I don't think you can easily cut the video that way. DivX videos can only be cut at keyframes. If you wish to cut it at exactly the frames you want, recompressing the video seems to be the only alternative.

[Ryo94]

What?, that divx videos cannot be cut by frames, try with Ulead media studio 6 and you will see, is 100% possible.
I'm waiting for a VFAPI plugin for ulead that are in development in
www.videotools.net precisely to export projects edited in Ulead and encode them with 2pass in virtualdub.

[khp]

Originally posted by Ryo94
What?, that divx videos cannot be cut by frames, try with Ulead media studio 6 and you will see, is 100% possible.

This is almost cirtainly because Ulead recompresses parts of the video. If it didn't you would get lots of ugly green stuff in the beginning of the second part. In theory it should be possible to get by, by only converting, the firstframe of the second part, to a key frame. But virtualdub does not support cutting this way. If you want frame exact cutting in virtualdub, you have to recompress the second part.

[Xyon75]

Yep

If u choose Direct Stream Copy from the video settings menu it doesn't recompress, it only take the input and cut it on keyframes.
If u want to cut a video out from keyframes u should recompress it or better cut on inner keyframes and recompress only the reamining part:

|-----|---------......-----------|------|
rec.&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp& nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp& nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp& nbsp&nbsp&nbsp&nbsprecompression
&nbsp&nbsp&nbsp&nbsp&nbsp&nbspkeyframe&nbsp&nbsp&n bsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&n bsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&nbsp&n bsp&nbspkeyframe

[Ryo94]

Ok, it's clear now
direct strem copy = cut only by keyframes
recompress = can cut by frames

Thanks a lot to all, best regards.