Vegas doesnt open .avi files. Help

[Krunga]

Literally opened an .avi file in Sony Vegas 14 before and now I cant. Help

[Marco Skoll]

SFM is known to corrupt AVI files over a certain size.

The only video export mode we will recommend or provide help with is image sequence exports.
The other modes either frequently corrupt, export with poor quality, or involve dangerously defunct plug-ins that are now a serious computer security risk to have installed.

The basics of image sequences are explained in this guide:
https://steamcommunity.com/sharedfiles/filedetails/?id=375229570
... and while that guide uses Blender's integral video editor as its example (because Blender is free and an otherwise useful tool for SFM, so lots of people have it), you can use pretty much any half-decent video editor for the job - which will include Vegas 14.

Although rendering and encoding in different stages might sound like more work, image sequences are the standard for experienced artists (for pretty much any rendering program), as saving out frames to individual files to assemble later (rather than trying to encode the entire video at once) is much more stable and cannot completely pooch an entire time consuming export if the program crashes mid-render.

Note that it is (probably) fine to export as AVI, MP4 or MOV from your video editor of choice, as the problem is with how SFM handles these formats, not the formats themselves.