VirtualDub doesn't playback .VOB or .MPEG right.

[Eneko]

Hello everybody.

I'm trying to transform a .Vob file to DivX Avi with VirtualDub and whatever quality settings I use I get a lot of quality loss (even at 10.000 bps). I have noticed that it has nothing to do with the transformation. If y load the Vob file and I directly preview the Vob file in VirtualDub, the quality is a lot worse than in my media players (Media Player Classic and KMPlayer). I use internal decoders or Gabbest MPEG decoder and they all work fine. However in Virtualdub all soft moving edges are now full of lines and stripes. And this quality loss is passed on to the Avi I encode.

Is there anything I can do about this? What source codecs is Virtualdub using? I supose they are the system defaults but that should be Gabbest which works fine in MPClassic and KMPlayer.

Any help would be greatly apreciated.

Greetings from spain!

[Eneko]

Sorry for forgetting this information:

I'm using VirtualDub 1.8.8 (build 30091) with MPEG-2 plugin v3.1 by fccHandler or VirtualDubMod 1.5.10.2 (build 2540)

[jagabo]

If y load the Vob file and I directly preview the Vob file in VirtualDub, the quality is a lot worse than in my media players

Worse in what way?

[poisondeathray]

However in Virtualdub all soft moving edges are now full of lines and stripes

Source might be interlaced or telecined. Most media players will apply deinterlacing automatically on MPEG-2 sources. Does it look like the images on this site: www.100fps.com

If so, the "fix" would be to deinterlace or IVTC depending on what you have.

[Eneko]

It definitly looks like that. I'm going to read that web site in detail.

The source video is in fact 29.970 fps NTSC.

[poisondeathray]

Lots more info here with links to more info:

http://www.doom9.org/ivtc-tut.htm

[jagabo]

VirtualDub's MPEG source plugin performs pulldown of 23.976 fps sources so you will get interlaced frames at 29.97 fps. VirtualDubMod doesn't perform the pulldown so you can retain the progressive source frames at 23.976 fps. You could also use DgIndex and AviSynth to avoid the pulldown.

[Eneko]

Well, finaly DgIndex, AviSynth and Virtualdubmod did the job. It took me a while but it looks great.

Thanks!!