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How do I, .ac3 for DVD projects
dvdguy_2002
post Jun 21 2002, 21:47
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Hi All,

I know this kinda off topic for this forum, but I'll still take the liberty of posting
my question for the Audio Experts.

I'm about to buy myself some hardware to capture footage for DVD projects.
The final file format for the dvd authoring software is Mpeg2, having mpeg audio,
which is actually converted from .avi file after capture.

What I need to do is, get .ac3 audio to put it into the dvd project, whereas, I get
mpeg audio out of my capture device.

Question, how do I get the .ac3 audio. What hardware or software do I require ?

Any and all the help will be greatly appreciated.

Thanks

dvdguy_2002 sad.gif
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rjamorim
post Jun 21 2002, 21:53
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QUOTE
Originally posted by dvdguy_2002
Question, how do I get the .ac3 audio. What hardware or software do I require ?


First, capture it with a soundcard capable of performing multichannel recording. (Or any good soundcard able to record at 48kHz, if you intend to use stereo streams)

Then, encode it with SonicFoundry's Softencode, or DigiGram multichannel encoder, or yet Surcode Dolby Digital. All of them use the same AC3 encoding libraries. (6.2.2)

Regards;

Roberto.

Edit: Other idea:
Capture everything to AVI.
In your MPEG2 encoder, set it to encode video only - that should generate a .M2V file.
Then, use avi2wav to separate a .wav stream from the original .avi
Encode the .wav stream with one of the programs mentioned.
And then create a .vob with a DVD authoring program, multiplexing the .m2v with the .ac3 file.


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dvdguy_2002
post Jun 21 2002, 23:29
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Thaknx for the prompt reply Roberto !

Do the soft encoders mentioned work under Win2k or do they need to be installed
under Win98se ?

What audio capture hardware would you recommend, as I am yet to buy one.

Best Regards.

dvdguy_2002
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rjamorim
post Jun 22 2002, 00:39
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QUOTE
Originally posted by dvdguy_2002
Do the soft encoders mentioned work under Win2k or do they need to be installed
under Win98se ?


They work in my Win2k. wink.gif

QUOTE
What audio capture hardware would you recommend, as I am yet to buy one.


I'm clueless. I rarely do audio capture, and my SBlive works fine for what I want.


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dvdguy_2002
post Jun 22 2002, 02:01
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The reason I asked the question about what OS supports the encoders is that
I got myself Sonic Foundry's Soft Encode 1.0 off the net and the Readme.wri file
says, it is for Win95 and NT

Anybody else, please......

Thanks.

dvdguy_2002:rolleyes:


PS : The date of the file is of 1997 and 1998.
Does anybody know of any upgrade for Win2k ?
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rjamorim
post Jun 22 2002, 03:21
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QUOTE
Originally posted by dvdguy_2002
The reason I asked the question about what OS supports the encoders is that
I got myself Sonic Foundry's Soft Encode 1.0 off the net and the Readme.wri file
says, it is for Win95 and NT 


It works perfectly fine on my 2K. Are you experiencing problems to install it?

QUOTE
PS :  The date of the file is of 1997 and 1998.
        Does anybody know of any upgrade for Win2k ?


They only produced version 1.0, and then development was abandoned. You can't find it anymore on SonicFoundry's page. So, no, no updates.


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dvdguy_2002
post Jun 22 2002, 03:40
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Thank Roberto !!

Yes, what's happening is that the download folder has this instruction :COPY README.WRI TO THE *ROOT* OF THE PARTITION FROM WHICH
YOU INSTALL

Even if I do or don't copy this file, it tends to fail encoding. I have ripped an Audio CD
and am using .WAV file, into each of the six channels to test it.

Tested on Win98se and Win2k..................

Whatz happening....please lemme know.

Regards.

dvdguy_2002
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Ookami
post Jun 22 2002, 04:27
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IMO, the best video related forum is http://forum.doom9.org/ .

There you can find a capture forum, DVD transcoding forum and a audio forum that relates directly to DVD and much more. Many of the Hydrogenaudio members are posting and helping there too.

A note, read the FAQ's, Q&A's and make a forum search before posting as there is a high possibility that every question you have is already answered.

And many of Doom9's members are going on Dimbrom's nerves, here biggrin.gif .


Cheers,

Ookie.


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rjamorim
post Jun 22 2002, 05:14
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QUOTE
Originally posted by dvdguy_2002
Whatz happening....please lemme know.


I would bet you need a sampling rate of 48kHz. Just a guess.

@Ookami: Stop stealing our users, willya? biggrin.gif


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dvdguy_2002
post Jun 22 2002, 05:28
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Roberto I'll give it a try and get back to you.
Thanks a zillion.

As for you, Ookie. Keep your nose out of my post if you don't plan to help.

Rather call yourself Pokie. tongue.gif


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dvdguy_2002
post Jun 22 2002, 18:27
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Thanks again for all the help, Roberto, I got the thing to work.
Keeping my fingers crossed. Don't need any mis-sync probs.

Regards.

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rjamorim
post Jun 22 2002, 18:41
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QUOTE
Originally posted by dvdguy_2002
Thanks again for all the help, Roberto


Heh. No problem. smile.gif


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Ookami
post Jun 22 2002, 21:41
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Good luck. You gonna need it with such an attitude.


QUOTE
Originally posted by dvdguy_2002
Roberto I'll give it a try and get back to you.
Thanks a zillion.

As for you, Ookie. Keep your nose out of my post if you don't plan to help.

Rather call yourself Pokie.    tongue.gif 


dvdguy_2002  smile.gif


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rjamorim
post Jun 22 2002, 23:03
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QUOTE
Originally posted by Ookami
Good luck. You gonna need it with such an attitude.


Well, Ookami, I hope you noticed I was just joking. That was the main reason of the ":D" there.

Of course, I can't speak for dvdguy here. But it seems to me he was joking too.

Friends? wink.gif


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