Is that possible, that a video (.mp4 or etc) had two video streams and we could to do work with each stream individually ? (like we do with 2 audio streams and we can remove any of them)..
1) do you know which video editors can handle such videos? Adobe Premiere , Sony Vegas, DaVinci or ... ?
2) At this moment, my typical MP4 files are converted by youtube (after upload) to i.e.
mpeg-4 10 AVC. And will those 2-stream videos will be converted to 1-stream video anyway? (maybe I have to ask that to YT forum, right?)