Re: [PATCH] mplex A/V precedence order
Andrew Stevens <[email protected]> Sun, 07 Mar 2010 22:02:36 +0100
| Newsgroups | gmane.comp.video.mjpeg.devel |
|---|---|
| Organization | Andrew @ Home |
| Message-ID | <[email protected]> |
Hi all (especially Bernhard) ... The invisble developer (turned Daddy/developer in a start-up) returns... > > The multiplex strategy in mplex will add all non-video packages at > > the end of a GOP. While i don't know about other formats (VCD and > > so on), in case of DVD all video information is put at the > > beginning of a VOBU and the remaining streams are sent to the end > > of a VOBU, regardless of their timestamps This behaviour may cause > > a buffer underrun in standalone players. > > I cannot give concrete example for a real-live failure, but looking > > at produced A/V streams (and code) gives me a strange feeling. This is not actually the case. The absolute priority to video is only given when 'video_first' is set. This occurs essentially only in the initial packet of VCD and 'DVD_NAV' multiplex runs where this is a special requirement. Once this special first packet is done video_first is reset and priority is given to the most urgent packet. Some painful learnining messy details of messy pseudo-standards lies behind this. This should NOT be changed. cheers, Andrew PS I'm in the process of changing ISP... the googlemail email address is the only one that will remaint stable long-term. ------------------------------------------------------------------------------ Download Intel® Parallel Studio Eval Try the new software tools for yourself. Speed compiling, find bugs proactively, and fine-tune applications for parallel performance. See why Intel Parallel Studio got high marks during beta. http://p.sf.net/sfu/intel-sw-dev