Author: ods15 Date: Sat Oct 28 20:02:37 2006 New Revision: 163 Modified: trunk/docs/nut-english.txt Log: explain syncpoints, could use a polish and more explanation... Modified: trunk/docs/nut-english.txt ============================================================================== --- trunk/docs/nut-english.txt (original) +++ trunk/docs/nut-english.txt Sat Oct 28 20:02:37 2006 @@ -202,4 +202,14 @@ Syncpoints -... +Syncpoints are mini-NUT packets, which serve for seeking, error recovery, +and error checking. They contain a startcode like all NUT packets, a +timestamp, a back_ptr, and a CRC on the packet itself. Syncpoints must be +placed every 32kb (or whatever max_distance is set to in the main header, +64kb at most), unless between the 2 syncpoints is a single frame. +Syncpoints must be followed by a frame, and must be placed after headers +(except those at end of file). +The timestamp coded in the syncpoint is a global timestamp, which is used +to reset the last_pts context of all streams, and to find the appropriate +syncpoint when seeking. back_ptr is explained in greater detail in the +Seeking section.