In-vegas-02.mp4 -

: H.264 (AVC) or H.265 (HEVC) for newer versions (Vegas 18+).

If this is your final output file, it was likely rendered using the format. This is the standard for high-quality web-friendly videos. in-vegas-02.mp4

If you are struggling to open or play in-vegas-02.mp4 within the software: Vegas Pro 19: How to Save Project as Mp4 in-vegas-02.mp4