mp4 with an embed close caption
We have a tv station that wants an mp4 with an embed close caption, not a sidecar file. This is not an option that I have found. I'm I missing something? It used to be there.
Adobe Staff - Nate commented
We have never supported embedded captions into MP4 files. We support embedded captions in MXF OP1a, and QuickTime (608 Only).
If the broadcaster requires .MP4, sidecar is the only currently supported option.