sout: rtp_rawvideo: error out instead of asserting

A bogus fmtp probably shouldn't abort the whole process.

changed milestone to %5.0.0

added MRStatus::Reviewable label

added MRStatus::Accepted label and removed MRStatus::Reviewable label

MR Acceptance result

This MergeRequest has been Accepted! Congratulations.

MR acceptance checks details:

• MR should be considered mergeable by Gitlab
• Last pipeline should be successful
• No activity on MR (no thread, no vote) and last update is long enough

This message was automatically generated by homer-bot.

added 22 commits

• 9a6373ab...d78eb68e - 21 commits from branch videolan:master
• 66b62f5c - sout: rtp_rawvideo: error out instead of asserting

Compare with previous version

enabled an automatic merge when the pipeline for 66b62f5c succeeds

merged

I don't get it. The only way that sscanf() should fail is if another code path in the same module botched fmtp. Assertion seems suited