Does anyone know how to use Dolby 5.1 in an AMV?

Sinime · Post by **Sinime** » Wed Oct 30, 2002 9:09 pm

I bought a new CD the other day that came with a DVD that has a song I would like to use in Dolby 5.1. Is there a way to edit and render the final output in the 5.1 Audio format usin Premiere 6.5?

mexicanjunior · Post by **mexicanjunior** » Wed Oct 30, 2002 9:14 pm

Hey I was born in San Antonio!

Sorry I don't know the exact answer to your question but I would think if you ripped the DVD and extracted the audio in an uncompressed wav, it would keep the same amount quality. That's just a guess though.

AbsoluteDestiny · Post by **AbsoluteDestiny** » Wed Oct 30, 2002 9:19 pm

You'd have to make a wav file for editing but you could mux the ac3 from your dvd source to your amv when you are done - just don't have any offset with the audio.

However, not many people will be able to play it sucessfully.

For more details on how to extract the audio from your DVD and how to make it into something you can edit with, read the audio sourcing section in A&E's Technical Guides (link below).

For muxing AC3 audio, well... doom9.org would probably be best for that info (in short you can use nandub)

RadicalEd0 · Post by **RadicalEd0** » Wed Oct 30, 2002 9:27 pm

Since there are only a few formats that support 5.1 channel audio your options are limited for the final encode. You could use 6 channel vorbis, but you'd have to put up a link to the ogg dsf's and widespread support would be unlikely. You could go the direct AC3 route, but again support wouldn't be there in a lot of cases.
Your other option is the mainstream codec route which may in this case be useful. Using RealAudio 5.1 or WMA 9 5.1 will guarantee that the user without support will have to download an upgrade before being able to play. This is the strategy of using corporate marketing to your advantage.
Then again you could always just put up a 5.1 version for people who know they can play it and a 2 channel version for everyone else.

Sinime · Post by **Sinime** » Wed Oct 30, 2002 10:08 pm

Thanks for the ideas, but it sounds a lot easier to just use stereo.

Sub0 · Post by **Sub0** » Thu Oct 31, 2002 1:04 pm

I have been thinking this to meself too ;-p but would you need like a 96khz-capable soundcard to record at that level anyway? (Terratech 6fire, Maudio somethin or CL Audigy 2 afaik)

Jebadia · Post by **Jebadia** » Thu Oct 31, 2002 3:57 pm

Heh...I have a Soundblaster 16, welcome to my hell.

Sinime · Post by **Sinime** » Thu Oct 31, 2002 11:32 pm

I have been thinking this to meself too ;-p but would you need like a 96khz-capable soundcard to record at that level anyway?

No just rip it off the DVD. Foo Fighters new CD comes with a DVD that has "All My Life" in stereo and in 5.1. I like the song, thought Escaflowne could fit with it, and thought it might be neat to make an AMV that used more then 2 channels of audio.

madmallard · Post by **madmallard** » Sat Nov 30, 2002 11:33 pm

actually to record yes you would. . .but not to rip. .or play

So far there is no consumer grade software that can easily edit AC3 files which is what most dolby digital is. We wont even go into DTS. . .

this is most annoying because there are plenty of pro-sumer multitrack recording sound boards which SHOULD be able to edit/handle this kind of file. . .

to short answer your question tho. . .. goto Doom9 liek the man said.

use a software converter to make a stereo dummy of the ac3 file so your time codes match. Edit to that, export the video and re-mux with the ac3 audio. thats the only way i can think of it with current technology.

or goto werner studious or hideaway studious and use their proprietary computers.

iserlohn · Post by **iserlohn** » Sun Dec 01, 2002 12:56 am

As has been said before, the easiest thing to do would be to edit in 2.0 stereo and then mux it back on. What I'd recommend doing is ripping and demuxing the 5.1 in either DVD2AVI or TMPEG, and then make an MPEG-2 of your video with TMPEG and mux it back on. The only catch is that you can't change the audio.

And I do find it funny that even stuff like SoundForge which is damned professional in my book (and has a pro level price tag) still won't do 5.1. I've been told that this is because of the DD licensing fees being extremely high, which could explain a lot.

Now what would be damn cool is if someone could write a program what would downconvert a 5.1 track into 5 mono wav files. That would make finding all the little flying things in music a LOT easier to hear...