Forum Discussion

mkammes's avatar
mkammes
Roku Guru
10 years ago

~2 seconds lost on front of HLS stream, delaying captions

Hello all: I've noticed that when I encode HLS files for my channel, the first ~2 seconds never play....first frame of action is 2 seconds into the video. I noticed that this also throws off the c...
Roku Developer Program
EnTerr's avatar
EnTerr
Roku Guru
10 years ago
Hmm, a file necessarily has to start with "i" (intra) frame, it can't start with "p" (predicted) or "b" (bi) now, can it - since they are based on at least one previous anchor frame.

Do couple of quick checks, e.g. if you set every frame to be keyframe (huge file but never mind for now) - does delay disappear? Also if you set from 2 to 4 sec - does the OOS increase?

See also if "Auto Key Frame on Scene Change" is checked (from random search saw https://support.sorensonmedia.com/custo ... tomization )