Avisynth and VirtualDub

Leo21 · Post by **Leo21** » Fri Aug 18, 2006 9:48 pm

I got all these DVD rips right, but when I try to use VD with Lagarith, or VD at all it doesn't let me. AS in, it doesn't let me open the video. It shoudl be an avi file and it's an mpeg3 audio.

Further, the error said the following:

"Couldn't locate decompressor for format wmv3 (unknown)

Virtual dub requires a VFW codec to decompress videos. DirectShow Codecs, are not suitable."

BTW. I can watch the video through VLC, Winamp, Media player, etc.

What's wrong? How can I fix it? I need the Hack Sign clips badly >.<

I'm using Sony Vegas by the way >.<

Kariudo · Post by **Kariudo** » Fri Aug 18, 2006 11:12 pm

post your script please.

are you using avisource, directShowSource or ssomething else.
IIRC, avisource has a tendency to mess things up and in such cases directShowSource is reccomended.

...never heard of .wmv3 files (probably the same as/related to .wmv), but in any case they are not avi files if they don't end in .avi (which might explain why you can't open the avs script in vdub).

could you also list codecs/codec packs that you have?

Leo21 · Post by **Leo21** » Sat Aug 19, 2006 12:51 am

Kariudo wrote:post your script please.

are you using avisource, directShowSource or ssomething else.
IIRC, avisource has a tendency to mess things up and in such cases directShowSource is reccomended.

...never heard of .wmv3 files (probably the same as/related to .wmv), but in any case they are not avi files if they don't end in .avi (which might explain why you can't open the avs script in vdub).

could you also list codecs/codec packs that you have?

Nah I'm sure it's avi, I got it off a torrent and it said avi >_<

Willen · Post by **Willen** » Sat Aug 19, 2006 4:06 am

Leo21 wrote:Nah I'm sure it's avi, I got it off a torrent and it said avi >_<

Ah, the evil WMV3 video in an AVI container.

Using AviSynth with DirectShowSource("yourvideo.avi") should work.

Another option, HIGHLY RECOMMENDED, is to get the DVDs and use those instead. It will be better quality and you avoid this whole "cannot locate a decompressor... WMV3" thing.

Leo21 · Post by **Leo21** » Sat Aug 19, 2006 1:19 pm

Willen wrote:
Leo21 wrote:Nah I'm sure it's avi, I got it off a torrent and it said avi >_<
Ah, the evil WMV3 video in an AVI container.

Using AviSynth with DirectShowSource("yourvideo.avi") should work.

Another option, HIGHLY RECOMMENDED, is to get the DVDs and use those instead. It will be better quality and you avoid this whole "cannot locate a decompressor... WMV3" thing.

Lol actually I got it to work with a codec.

Yet to face another problem:

(if it is one)

I was scrypting something in AVIsynth so that the aspect ratio would be 4:3 instead of 16:9. It worked but while previewing the file, it's extremely slow. Is this normal? I need to convert it to a lossless soon 'cause i feel I'm stuck in a rut @_@

Willen · Post by **Willen** » Sun Aug 20, 2006 1:53 am

Leo21 wrote:Yet to face another problem:

(if it is one)

I was scrypting something in AVIsynth so that the aspect ratio would be 4:3 instead of 16:9. It worked but while previewing the file, it's extremely slow. Is this normal? I need to convert it to a lossless soon 'cause i feel I'm stuck in a rut @_@

Depending on your system specs, it may be normal. My main computer (A64 X2 3800+, 2GB RAM) will run previewed AviSynth files in VitrualDubMod pretty slow if there is a bunch of cropping and resizing going on, unless the resize is to something very low resolution.

Leo21 · Post by **Leo21** » Sun Aug 20, 2006 10:09 pm

Willen wrote:
Leo21 wrote:Yet to face another problem:

(if it is one)

I was scrypting something in AVIsynth so that the aspect ratio would be 4:3 instead of 16:9. It worked but while previewing the file, it's extremely slow. Is this normal? I need to convert it to a lossless soon 'cause i feel I'm stuck in a rut @_@
Depending on your system specs, it may be normal. My main computer (A64 X2 3800+, 2GB RAM) will run previewed AviSynth files in VitrualDubMod pretty slow if there is a bunch of cropping and resizing going on, unless the resize is to something very low resolution.

Erm, my specs are some thing like,

1.3 GH, 256 MB Ram, and Pentium 4 >_> 2 year old hard drive, 6 year old computer. Windows XP >_>

Willen · Post by **Willen** » Sun Aug 20, 2006 11:31 pm

Leo21 wrote:Erm, my specs are some thing like,

1.3 GH, 256 MB Ram, and Pentium 4 >_> 2 year old hard drive, 6 year old computer. Windows XP >_>

Ouch.

I seriously recommend making lossless clips (Huffyuv AVI). You will need some patience to make the clips, but the editing should be much smoother and faster.

More RAM would help too.

Leo21 · Post by **Leo21** » Mon Aug 21, 2006 11:54 am

Willen wrote:
Leo21 wrote:Erm, my specs are some thing like,

1.3 GH, 256 MB Ram, and Pentium 4 >_> 2 year old hard drive, 6 year old computer. Windows XP >_>
Ouch.

I seriously recommend making lossless clips (Huffyuv AVI). You will need some patience to make the clips, but the editing should be much smoother and faster.

More RAM would help too.

I was thinking Lagarith >.< I have huffyuv but lagarith seemed nicer.

Melanchthon · Post by **Melanchthon** » Mon Aug 21, 2006 2:56 pm

Leo21 wrote:I was thinking Lagarith >.< I have huffyuv but lagarith seemed nicer.

Try them both then. If neither of them give you smooth playback during editing then make mjpegs of the lossless clips and use the bait-and-switch method of editing. It's kind of fiddly, but it might be your only way of getting real-time previewing.