Best Codec for Source Recorder?

Hey guys, so i got my source recorder finally working, the xvid codec i used to use from some k lite mega pack is being stupid, anyway i started to use the divx one and it turned out great, but when i went to go put the video file into sony vegas only the audio appeared.

What codec should i be using for recording .dem files in GarrysMod?



Full frames, use a codec for final render.

Thanks, i will try Indeo

Any others i should give a go that are sony vegas compatible?