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AIFF or AC3 ?

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Fredy Schwerdtner
AIFF or AC3 ?
on Dec 6, 2010 at 10:50:32 pm

I'm doing a DVD job which the client wants the best audio quality. I use Apple Compressor. Is it ok using MPEG2 for video and let the audio uncompressed as AIFF ?

MacBook Pro 17"
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(2) External HD LaCieMac (400/800 FW and USB)with 500GB -(2) USB External HD Western Digital (in cases) with 750GB
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Craig Seeman
Re: AIFF or AC3 ?
on Dec 6, 2010 at 11:03:20 pm

The problem is that AIFF files can be large enough to force a lower data rate for the video. Also I hear some DVD players have problems with AIFF files.



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Fredy Schwerdtner
Re: AIFF or AC3 ?
on Dec 6, 2010 at 11:20:45 pm

"AIFF files can be large enough to force a lower data rate for the video"

I've heard that once .....

Thanks.

MacBook Pro 17"
2.5 GHz Intel Core 2 Duo
4GB 667 MHz DDR2 SDRAM
(2) External HD LaCieMac (400/800 FW and USB)with 500GB -(2) USB External HD Western Digital (in cases) with 750GB
OS X 10.6.4
Final Cut Studio "3"


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Jason Brown
Re: AIFF or AC3 ?
on Dec 6, 2010 at 11:35:42 pm

I'm pretty sure that aiff isn't a supported audio codec for the DVD specification. Any authoring program will transcode aiff to PCM or dolby digital (ac3) format.

Dolby digital is pretty universal. It has a very low bit rate while maintaining high quality. Unless you have a need for PCM, I'd use ac3.


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Craig Seeman
Re: AIFF or AC3 ?
on Dec 7, 2010 at 12:12:07 am

http://en.wikipedia.org/wiki/Audio_Interchange_File_Format
The audio data in a standard AIFF file is uncompressed pulse-code modulation (PCM).

iDVD uses PCM for example.

http://en.wikipedia.org/wiki/DVD#DVD-Video
and/or LPCM Stereophonic


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