I cannot import the .avi videoclips made by Canon Powershot G3 camera. Although they normally play in any other Windows application, after trying to open them in Vegas Movies Studio, just a sound is there, no picture. Could you please advice how to import them completely ?
There are a couple approaches to get this done. I refreshed my memory by doing a quick Google search and found this good discussion: http://www.moviecodec.com/thread/114.html
From what I recall, and as mentioned in the link, although the file is named as a .avi, Canon actually claims it is a QuickTime file. Clever of them to put the .avi extension on it, no?
I think you can try to trick Movie Studio into editing by maybe renaming the file and/or making sure you have the right version of QuickTime such that you can do editing. (It's still the free QuickTime, but you need to install what I believe they call "authoring components"; do a search on QuickTime on this forum.)
Another option is to get a codec installed on your machine that supports the files; this is what I wound up doing, and there are a couple of suppliers listed if you follow the link I mention above.