On Sat, 22 Jan 2005, kevin thayer wrote:
"Special" modes aside, as I understand it, making an ES/PS/TS could be little more than a "wrapper" for the MPEG2 A/V stream. Packetization, DVD-NAV placeholder streams, etc can be added, but the video parts (once demuxed, depacketized, etc) could very well be the same. If they are different, then how so? It'll be worth looking into.- Differences between the streams produced under different types (ES, PS, TS, DVD, etc)
the different types are pretty well documented out there, at least for the well known types (ES,PS,PES,TS).. the ones where it gets tricky are the 'dvd-special' ones.
I've looked around for some sort of "MPEG2 stream analyzer," but really haven't come up with anything reasonable. It appears that most doodads that people have written use libmpeg2, but generally are for the purposes of playing, cutting, transcoding, muxing, etc... not just getting info on the stream. Something like tk_tools (that isn't quite so broken and can read other than TS streams).
Hrm... I guess I'll look into that. Do you recall at all how they were different? I'd just figured padding, etc.I might try messing around with different formats and see if it actually changes anything (ES, PS, TS, DVD, etc).
these do work.. and they are different. i've done some bit-by-bit decoding at least on some of the streamtypes and there are differences. They were quite helpful when working on my xine plugin... it told me what the decoder was expecting :)
-Cory
************************************************************************* * Cory Papenfuss * * Electrical Engineering candidate Ph.D. graduate student * * Virginia Polytechnic Institute and State University * *************************************************************************
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