25998 2014-06-06 01:45:35 +0000 Move timestamp less than "presentation start time" checks after "append window" filtering 2014-06-13 20:12:43 +0000 1 1 1 Unclassified HTML WG Media Source Extensions unspecified PC All RESOLVED FIXED P2 normal CR 1 acolwell acolwell mike public-html-media public-html-bugzilla oldest_to_newest 107411 0 acolwell 2014-06-06 01:45:35 +0000 Step 7 of the coded frame processing algorithm should be moved after steps 8-10 so that it is possible to append the middle of a media segment at the beginning of presentation. Say I have a media segment that spans the range [0, 10) and has a random access point at time 5. To insert the range [5-10) at time 0, I would need to set timestampOffset to -5 before appending. The current location of the check would cause a "decode" error because the coded frame for presentation time 0 would become -5. If the check is moved after the append window, the coded frames with negative timestamps are automatically filtered out and the "decode" error is avoided. As I side note, I realized that the constraints for setting appendWindowStart actually enforces "presentation timestamp > 0" so I can technically drop the presentation timestamp part of the check in Step 7. 107803 1 acolwell 2014-06-13 20:12:43 +0000 Change committed. https://dvcs.w3.org/hg/html-media/rev/cb96bc1c87c3 Moved step after append window filtering steps and removed presentation timestamp from the step because that case is covered by the append window filtering steps.