Vegas Pro 19/18/17/16 Supported Formats - Video/Audio
Sony Vegas] Best Render Settings for small mp4 videos - VideoHelp Forum
Steam Community :: Guide :: Best Render Settings to YouTube 1080p60fps
Have recently been getting this issue with VEGAS 16 where i cant import any of my mp4 files. The codec for the video file is: MPEG-4 AVC. Any help? : r/VegasPro
How to Fix Sony Vegas Won't Open MP4 Issue – VideoProc