VirtualDub problem with no index or keyframes; alternate editor

[JackJ59]

I recorded an avi with Camtasia, and I don't know if it was because of file size or what, but I'm getting an error when opening in VirtualDub that:
- AVI: Index not found or damaged reconstructing via file scan
- AVI: Keyframe flag reconstruction was not specified in open options and the video stream is not a known keyframe-only type. Seeking in the video stream may be extremely slow.

I've gotten this before, and indeed searching was slow, but I think I was still able to edit it. But with this video, which is 1 hour and 47 minutes long, it only seems to be able to load about 8 minutes of it. I'd like to edit it down to just the first 55 minutes or so.
Is there an alternate avi splitter I could use? I tried AVI Split Classic but it said it couldn't open it because it was written in ODML Avi. Thanks.

[MaverickTse]

Try re-enocde it with VLC(if it plays it)
or try AviUtl (try moving L-Smash reader to top priority if default setting has problem)

[JackJ59]

Thanks much! I didn't even know that VLC could convert. Unfortunately, it crashed when I tried. Just downloaded AviUtl, and will watch your tutorial I found (thanks for that, too!)

[manono]

Once open in VDub you could save it out again, this time to a lossless AVI (Lagarith, for example) if you have plenty of hard drive space. After that you'd have no problems at all.

[MaverickTse]

lastly, try VirtualDubMod.
According to an old thread here:
https://forum.videohelp.com/threads/241201-Splitting-ODML-AVI-files

It may handle 2+GB Avi File in ODML format