MPEG2 with embedded sound

[Paul Dickin]

Hi
You need something like Mpeg Streamclip to mux them together.
https://www.squared5.com/svideo/mpeg-streamclip-mac.html

[Evan Schafer]

Just tackled this problem yesterday. My solution was to export an MPEG2 via Compressor with a transport stream of audio embedded (its an option in Compressor). This will allow you to compress your video to a specific data rate, if you need to. Then take that .m2t file and run it through MPEG Streamclip, as noted in the previous post. You will want to use either the “Convert to MPEG” or “Convert to MPEG with MP2 Audio” options, depending on your specs. Hope that helps.

[Greg Ball]

Why the additional compressor step?… Just import it into streamclip and out as a QT file

[Evan Schafer]

I needed to have the MPEG at a specific data rate which, unless I’m mistaken, Streamclip wont do.

[Rafael Amador]

Tarka,
Sorry to say you but you never did exported with QT an MPG2 with the audio muxed. You may had use MediaPipe, MissingMPGTools or ffmpgx to do so but never QT. As long as I remember the only way to mux a video stream with audio is when auio is MP2 (When you use AC3 or PCM, the audio is not muxed).
QT can read MP2 but can not export to that format.
I’ve see in MPGStreamclip the option CONVERT TO MPG2 with MP2 AUDIO. But you can not convert an .mov, you can convert a VOB or so. Any way MP@ audio is really low quality. I’f you can avoid to use it.
Cheers,
Rafael

[Rennie Klymyk]

Are you using the mpeg2 for dvd? m2v and aiff audio is the 1st step and muxing them into a transport stream is the next step. A dvd authoring program will do the rest. DVDSP etc. I think toast 6 and up will mux and burn your files to disc. I’m not sure where you are going with it. If you are tight for space to make a disc you can encode audio with the dolby 2.0 option which is ac3 and about 1/5th the file size as aiff.

[Rafael Amador]

Rennie,
The only format that is really muxed is MPG2 video with MPG1-layer II audio. They can be muxed in a MPG file because both are MPG. When we use AC3, aiff or wav (not MPG), the files are packed toguether in program-stream, transport-streams or what ever, but there are not really muxed.
Cheers,
Rafael

[Rennie Klymyk]

[rafalaos] “The only format that is really muxed is MPG2 video with MPG1-layer II audio. They can be muxed in a MPG file because both are MPG. When we use AC3, aiff or wav (not MPG), the files are packed toguether in program-stream, transport-streams or what ever, but there are not really muxed.”

I guess it’s a loose term and is more less slang for multiplexing. I’m not sure what you mean when you say “they are not really muxed” Multiplexing is a process of combining files or file types to share valuable space and there are many types used in the communications industry. Early dvd encoders and authoring apps only used mpeg-1 audio and created- (from my wired Muxer software cira 1998)

System stream – If selected, the final multiplexed file will be an MPEG1 System stream.
Program stream – If selected, the final multiplexed file will be an MPEG2 Program stream.

Transport streams are much more broadly used and can also carry data. As technology evolves dvd specs are changing with the new innovations. By modern terms AC3, PCM and data and video files that are combined in a stream are referred to as muxed.

In the DSP manual (see pg 651) it is short for multiplexing and you can read their definition on the same page.

The terms muliplexing and muxing are found and used in all forms of digital broadcasting and industries requireing movement of different types of data though a shared pipeline. Several channels of sd programing are multiplexed with 1 HD channel for modern broadcasting.

[Rafael Amador]

Yes Rennie,
Is a bit of a mess with the names. 4 or 5 years ago you could find a lot of DVDs that you could extrat an MPG (i don’t remember the extensio) that has toguether video and audio. Then you should apply a Demuxer to separate audio and video. When they started to use .AC3, . aiff and .wav and you ripped these DVDs, you got the audio and video and video already separated. This is what I meant about muxing or not muxing. I think this is why DVDSTP can not use MPG audio, because can not mux it.
Cherrs
Rafael

[Tarka The otter]

Hey, thanks a lot for your help guys, that worked fine, and yeah, I guess I never did export a muxed MPEG2 before, I must be misremembering. Strange that its not an option, though? I wonder if it’s a copyright thing.

– Tarka