I opened Vegas & my project and no missing files were found. When I drag a video file into one of the tracks, only the audio is visible and works. This is what it says for the video: stream attributes could not be determined. The thing is, the files I want to use give trouble, but some others work fine. Could it have something to do with the extension? Or the codecs? Either way, it’s odd because I turned the computer off during the night so nothing changed, and still, yesterday it worked and now it doesn’t.