fix crash due to no output format available -- DO NOT MERGE

Output format should arrive before we get first frame, but if
it doesn't, better fail it than crash.

bug: 69924594
bug: 75978033
Change-Id: I057ba49c8f83b9a301d409510717039ad894c391
(cherry picked from commit 6cb243cd2bb4d2fb41d12394fe5731ba098fc2ef)
1 file changed