how to demux audio from mpeg2 file

[smokeslikeapoet]

This may be a real stupid question, but how to I strip the audio off an MPEG 1 file? What program do I use? I don't need step by step instructions, just a link to a how-to page.

Thanks

[sh0dan]

Use Virtual Dub for WAV-output.
Use TMPGEnc's MPEG Tools / Simple demux to extact to mpeg layer 2 sound file.

[smokeslikeapoet]

What I was trying to do is process the audio track from a music video I recorded because it sounded horrible. What I ended up doing was ripping the mp3 from cd and muxing that with the video from the MPEG. It turned out great, but thanks for the tip.

[PeterTheMaster]

hi everybody!

i have downloaded an mpg file with audio, the file is 453mb. virtualdub says it has mp2 audio, 72mb.
if i use "save WAV..." the resulting wav file is 458mb.
i also tried nandub but it gave me an error. so how can i get the mp2 sound file?

because i want to reencode that video and i want to make an mp3 file out of this mp2 file. i can do it with the extracted wav file, but somehow this seems not to be the right way.
i think this way i lose some quality, wont i?
im pretty sure doing mp2 -> mp3 with lame ist better than
mp2 -> wav with virtual dub and then wav -> mp3 with lame.

thx for you help.

[Tsui]

you can use dvd2avi (demux all) or bbdmux

[PeterTheMaster]

i tried with dvd2avi, but after opening the .mpg file, i cant chose "save project". but i also dont get an error.
dvd2avi just seems to ignore the file.
is there another way to demux than save project?

[DSPguru]

you should try bbdmux..

[Foambullet]

USe TMPGEnc

Go to File -> MPEG Tools

There you can choose either Demux or Simple Demux to seperate the audio and video files.

[killingspree]

i've captured some personal videos but i've got the following problem:
first what i did:
i took the 5 mpg files and created a DVD2AVI project so that all 5 files can be seen as one big logical file (i don't know why the caputre device is splitting the files at 600 Megs but he does and there is afaik no way around it) then i created a frameserver to reencode the movie with DIVX and run sum filters over it!
this all works perfectly only, that i lost the audio somewhere in the process. in my opinion it was in the first step, when i did the dvd2avi project...
my question now is:
does anybody know how to extract the audio from all 5 (!!) fiels into one big audiofile (preferably uncompressed PCM??

regards
steVe

[DJ Bobo]

In DVD2AVI you must select Audio -> MPEG Audio -> Demux all tracks

No software will extract uncompressed sound. The sound will be extracted as is in MP2 (or MPA, it's the same thing), because you captured in MPEG.

[killingspree]

worked fine,... got one 170 megs mpa file containing all the audio!!
kind of stupid of me that i didn't find it myself :-P

thanks
steVe

[Top_Cat]

What program is best to use for ripping Audio from a mpeg file?

I have recorded a TV episode to mpeg and now want to rip the audio from it and encode it to MP3.

What should I use?

Top Cat

[Bodman]

Hi,
Can anyone tell me a tool I can use to strip Audio out of a SVCD mpeg 2 video file. I tried Virtual dub but it doesnt support it.

Thnx

Bodman

[DJ Bobo]

In TMPG, go to File -> MPEG Tools -> Demultiplex

[sunnysixkiller]

I am wondering how one would go about extracting audio from and mpeg2 file.

Bascially I am looking for a software demuxing/muxing program I guess, so I can seperate the audio and video.

Thanks.

Craig

[sunnysixkiller]

Thanks that is exactly what I needed.

[mikewillnot]

Depends on what your end objective is. If you just want the audio, I've been experimenting with Goldwave lately. It can open an mpeg2 file, and then save the audio in various formats, I think; .wav is what I'm using. That doesn't give a demuxed video file, though.

[iradic]

GraphEdit is also another tool to demux - I think for every a/v format available for viewing on your computer (i.e. you need dshow filter)...for original a/v format use "dump.ax" and for waw (audio format) or avi (video uncompressed - big file, put some lossless codec before) use "filewriter.ax"....

Didn't wanted to write full explanation here... do some Google search on GraphEdit...

Also TMPG Encoder is better tool for mpeg-1 and mpeg-2 a/v mux/demux/merge/cut but GraphEdit is freeware...