audio task (MPG>AIFF>MPG without loss)

[cleantone]

Hello,

My goal is to extract audio from a large MPG movie. The film is White Zombie which is public domain and I d/l a VCD quality MPG from archive.org. I'm an audio engineer. The audio on the film is awful and I can definitly clean it up before I burn to DVD/VCD. So what I need to do is extract the audio from the MPG at a good quality AIFF. I will then remaster it. I want to be able to put it back on the MPG without recompressing the video at all. This film is already poor because it is a 1st or 2nd gen transfer of a film from 1932. The origional prints were lost along time ago. The audio dub was poor but I can fix it up pretty well. The concern is to not recompress the video image at all.

I only have iMovie/ffmpegX/QT Amateur/D-Vision 3/Digital Performer/Bias Peak at my disposal. Since this is a one off and I'm broke I cannot pickup any software that costs any money at all. I know how that sounds but that is the case.

Any help please?

[OmegaSupreme]

You can use Mpeg Streamclip (free), use the "demux to AIFF" option.

[cleantone]

Thanks. The recombining has me the most perplexed. Any input there?

[pianoman719]

It may be that in MPEG Streamclip you want to use Demux to M2V and AIFF. Then after you finish processing the AIFF, put the M2V and the new AIFF in a folder together with the same filename (except one is .m2v and one is .aiff). Then open the M2V file in Streamclip. It should automatically see the AIFF and re-multiplex the two files on the fly. Then choose Convert To MPEG With MP2 Audio. That should give you a new .mpg with the original video, plus the new audio converted to MP2. (You can set the bitrate for the MP2 in Streamclip's preferences first.)

If this doesn't work for some reason, another tool that can help you convert the .aiff to the right sampling frequency and bitrate for a VCD is BitVice Helper Multiplexor (freeware). Once you have the new .aiff converted to .mp2, BitVice Helper can also multiplex the .m2v and .mp2 into an .mpg.

-Pianoman