Author: michael Date: Tue Feb 5 15:54:07 2008 New Revision: 588 Log: Add a unknown match_time_delta value and use this as default. That way "old" nut files will have unspecified match_time_delta instead of all 0. And new muxers arent forced to know all match_time_delta. Comments welcome. An alternative would be to require specified match_time_delta but that could be tricky to find out in some cases, and no other container contains this info. Modified: docs/nut.txt Modified: docs/nut.txt ============================================================================== --- docs/nut.txt (original) +++ docs/nut.txt Tue Feb 5 15:54:07 2008 @@ -247,7 +247,7 @@ main_header: tmp_pts=0 tmp_mul=1 tmp_stream=0 - tmp_match=0 + tmp_match=1-(1<<62) for(i=0; i<256; ){ tmp_flag v tmp_fields v @@ -683,6 +683,10 @@ match_time_delta the output from the decoder has converged independent from the availability of previous frames (that is the frames are virtually identical no matter if decoding started from the very first frame or from this keyframe). + If its value is 1-(1<<62) then match_time_delta is unspecified, that is + the muxer didnt have enough knowledge to set it. + A muxer MUST only set it to 1-(1<<62) if it does not know the correct + value. That is, it is not allowed to randomly discard known values. lsb_pts Least significant bits of the pts in time_base precision.