Output Stream Type?

[tmgrood]

Cant find this one in guides or forums so im posting this new topic....
In Tmpge Xpress and Plus there is an option for "Output Stream Type"
Elementary(ES) Vid only, Aud only, Vid and Aud...........
and System Aud and Vid.
What are the differences with these and for converting avi to mpeg2, which would be best to use.
Thanks.

[yoda313]

Hello,

As far as I know the streams are as they say: Video only (no sound) or Audio only (no video). That's all there is to it as far as I can tell.

Kevin

For mpeg2 use the dvd template for NTSC (US) or PAL (Europe).

[tmgrood]

But my main question was whats the difference between System and Elementary?
Thanks and sorry for not making it clear enough.

[yoda313]

Hello,

No problem. As to the difference I guess I really don't know.

Kevin

[ZippyP.]

System is a complete mpeg (.mpg), elementary streams are the audio and video components (.d2v video and .mp2 audio) that make up an mpeg. If you demultiplex (demux) an mpeg you get the elementary streams, if you mux the streams you get an mpeg.

ES (video) = .d2v video only
ES (audio) = .mp2 audio only
ES (video+audio) = .d2v and .mp2
System (video only) = .mpg with video, no audio
System (video+audio) = .mpg with video and audio

Some authoring programs will not accept elementary streams to make a DVD, in which case you need a system file. Sometimes you only want the mp2 as you already have an audio file that you will use to make your DVD...for example you may already have an AC3 audio file.

Which you select depends on what you need.

[tmgrood]

Thanks for the quick responses and shedding some light on the subject.
Greatly Appreciated.

[Cornucopia]

Yeah, the muxed or multiplexed streams are "zippered" together, with some additional headers/wrappers mixed in for information for the apps.

BTW, MPEG1 only has elementary (bare media) streams and System (multiplexed/combined media) streams. MPEG2 has a Superset Equivalent of System Streams, called "Program" streams. It does basically the same thing that System streams do, but has more options/features--like capability for non-MPEG media in a private stream to be muxed along with the video. The most common one being AC3. MPEG2 also has "Transport" streams, which are much like Program streams, but allow for more error correction/detection and include separate timebases (clocks) for each of the media streams. This makes them preferred for uses like DigiSat stuff.
VOB's are like Program Streams Plus. They do all that program streams do, and then add the PCM and subtitle capabilites.

Scott

>>>>>>>
sorry for being late, wrote it earlier, had to stop and do some WORK first.

[jimmalenko]

ES (video) = .d2v video only
ES (audio) = .mp2 audio only
ES (video+audio) = .d2v and .mp2
System (video only) = .mpg with video, no audio
System (video+audio) = .mpg with video and audio

Is TMPGenc XPress different from Plus in that it creates D2V files and not M2V files for elementary video ?

[Cornucopia]

I'm pretty sure that's just a difference in nomenclature. That is, you can have an MPEG Program stream that is called "***.mpg" or "***.mpeg", or even "***.mps" (as in stream). Likewise you can have elementary video streams that are "***.mpv" or "***.mv1" or "***.vbs" and elementary audio streams that are "***.mpa" or "***.mp1" or "***.mp2" or "***.abs". There probably are other ones that might be considered valid extensions.

In this case, I don't think the D2V is referring to the same type of file that one normally sees around here--which would be the frameserving output/signpost file from the DVD2AVI app.

Scott

>>>>>>>
(edit--so if you need to, you can just rename your file and it should work)

[jimmalenko]

I'm pretty sure that's just a difference in nomenclature. That is, you can have an MPEG Program stream that is called "***.mpg" or "***.mpeg", or even "***.mps" (as in stream). Likewise you can have elementary video streams that are "***.mpv" or "***.mv1" or "***.vbs" and elementary audio streams that are "***.mpa" or "***.mp1" or "***.mp2" or "***.abs". There probably are other ones that might be considered valid extensions.

In this case, I don't think the D2V is referring to the same type of file that one normally sees around here--which would be the frameserving output/signpost file from the DVD2AVI app.

Scott

OK. Thanks !