Author: michael Date: Wed Nov 8 20:04:48 2006 New Revision: 20796 Modified: trunk/DOCS/tech/nut.txt Log: dts, width/height explanation Modified: trunk/DOCS/tech/nut.txt ============================================================================== --- trunk/DOCS/tech/nut.txt (original) +++ trunk/DOCS/tech/nut.txt Wed Nov 8 20:04:48 2006 @@ -644,6 +644,11 @@ all pts's of keyframes of a single stream MUST be monotone dts + decoding timestamp + the dts of a frame is the timestamp of the first sample which is + output by a decoder when it is feeded with the frame, note that the + data output is not neccesarily what is coded in the frame, but may + be data from previous frames dts is calculated by using a decode_delay+1 sized buffer for each stream, into which the current pts is inserted and the element with the smallest value is removed, this is then the current dts @@ -654,6 +659,7 @@ frames are NOT exempt from this rule) width/height + width and height of the video in pixels MUST be set to the coded width/height, MUST NOT be 0 sample_width/sample_height (aspect ratio)