Avisynth and Huffyuv not playing well together

[mpwr5]

I have a strange avisynth problem. I've captured some video compressed with Huffyuv. (720x480 29.97fps captured with MGI Videowave because Virtualdub drops too many frames on my Win2k system).

If I frameserve this with even the most simple avisynth script, e.g.

clip=AviSource("f:\capture.avi")
return clip

the colors produced by the frameserved video are totally messed up. Everything is green and magenta. However, if I use VirtualDub to make a copy of the clip, and even if I use Huffyuv to compress the copy, I can frameserve the copy and everything is OK!

Any ideas? I'm speculating that some header information in the original clip is messed up, and duping the clip with vdub cleans it up, but I'm not sure what to look for.

[baz00ie]

Have you tried converting to the YUV color space? ie:

ConvertToYUY2()

come back
baz

[mpwr5]

I have some more info on this problem. Turns out the video I was capturing was UNCOMPRESSED. (More on this, below.) I cannot seem to frameserve uncompressed video captured with MGI VideoWave with even the most trivial avisynth script. Huffuv-compressed video frameserves just fine.

The reason the video was uncompressed was a bug in the VideoWave UI. If you bring up the video settings dialog to verify what compression you have selected, then just close the dialog, it SILENTLY changes the compression option to "no compression." When you bring up this dialog, you have to explicitly re-set the compression to Huffyuv, or you will lose this setting when you close the dialog. Sigh.

I can't wait for the WDM version of VirtualDub! I've tried some other WDM capturing utilities, but they don't work for me (e.g. VirtualVCR doesn't seem to like Nvidia cards) So, I'm stuck with VideoWave for now.