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View Full Version : Is AVISynth Causing This Jerkyness?

humet
22nd February 2004, 16:32
Hi,

I've got this PAL AVI, it plays fine, but when I load it through AVISynth it goes jerky!

I loaded the AVS file into VirtualDubMod and I noticed that when I move frame by frame through the AVI it moves then stops, moves then stops and so on... It's like it plays the same frame twice then goes to the next, (e.g AA, BB, CC...), but the AVI isn't any longer than when played without AVIsynth so it must be missing some frames out. The AVS file I used only has the AVISource in it, but I need to use AVISynth to resize the AVI to a DVD compatible size.

This is a problem because I want to put it onto DVD-R using CCE, and the MPG outputs jerky also.

What's wrong? I tried an NTSC AVI and it worked fine.

Thanks for any help.

humet
Mug Funky
23rd February 2004, 07:59
need more info than that... if possible post a small chunk of the avi (you can direct stream copy a keyframe and a few that follow it with virtualdubmod).

avisource wouldn't be doing that unless the source is like that to begin with - it uses VFW just the same as virtualdub does, so there must be something in the script that's screwing things, or else something so strange i've never heard of it happening before.
humet
23rd February 2004, 08:44
Here is a sample:

A Sample (http://www.jalarar.f2s.com/sample.avi)

The jerkyness occurs even when the AVISynth script is just left as:

AVISource("filename")

Dunno what is happening.

Thanks

humet
esby
23rd February 2004, 09:19
The sample contains bframes.

What version of xvid are you using for decoding?

I don't know if this is the source of the problem,
but that could be.

esby
humet
23rd February 2004, 19:03
I've got no idea!?!? :scared:

How do I find this out?

humet
humet
23rd February 2004, 19:06
Oops, spoke too soon!

I looked in my Add/Remove program and that says:

Xvid Video Codec 04102002-1 (Koepi's Build With EPSZ me)

Looks a bit old to me, i'll try to find an updated one.

humet
humet
23rd February 2004, 19:14
YEAH!!

It is now smooth again through AVISynth!

I updated the Xvid Codec to the latest Nic build! I didn't think it would be AVISynth causing it!

Thanks esby!

humet :D