Author: michael Date: Mon Mar 3 18:03:25 2008 New Revision: 654 Log: A few words on how the keyframes could be aligned. Modified: docs/nut.txt Modified: docs/nut.txt ============================================================================== --- docs/nut.txt (original) +++ docs/nut.txt Mon Mar 3 18:03:25 2008 @@ -1045,7 +1045,13 @@ shortest back ptrs: <----------------- In the bad example a player would have to demux and decode half of the video between the 2 keyrames to start correct playback if it favors the shortest -back pointer. +back pointer. A player could of course also choose to ignore subtitles and +thus not display them between the video keyframe and subtitle frame. This +would avoid the decoding but not neccessarily demuxing and of course would +lead to incorrect display (no subtitles). An encoding application SHOULD thus +try to reasonably align keyframes in time. This could be achieved by repeating +subtitle packets at video keyframes (with appropriately adjusted start/end +times in the subtitle packets if needed). The above considerations are not specific to NUT.