For everyone who's struggling with this error "Supported only On2 Technologies VP6 codec!" when opening their .avi file in VP6 Converter. I've had this problem too because I didn't have the VP6 codec option in the Compression menu of VirtualDub even if the VP6 codec was installed. This video "How to Convert AVI to VP6" helped me: https://www.youtube.com/watch?v=jzyJH-EFBZE&t=66s
There are links to the programs needed, you just install everything in the "VP6 Tutorial" archive. Then the VP6 codec appears in VirtualDub!
I appreciate you. I was searching on google for hours finding dead ends. I was able to get everything working correctly.
I have not tried messing with gaming channels but If I come across anything or learn something new I will be sure to share.