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View Full Version : Output >4GB 6-ch Wav for Azid


LiFe
14th June 2004, 15:28
Hi guys,
Searched through the forum but was having difficulty finding what I wanted.

I want to decode a 6 channel AC3 file to a 6 channel WAVE file. As previously mentioned Azid's default layout is brocken, but one can fix that with -o.

My next problem is that the file is greater than 4GB and most programs (including avisynth) only seem to see 45 minutes of data, instead of 2 hours. I assume there are some lovely 2GB/4GB limits of WAV files due to MS's poor future proofing.

How the hell do I get around this problem? Ugh!

Thanks.

LiFe.

KpeX
15th June 2004, 03:19
For AC3 > Six channel wav, I always used besweet:

besweet -core ( -input "file.ac3" -output "out6.wav" -6chwav ) -azid ( your azid options )

I have no advice on the AviSynth problem. I always encode my six channel wavs to AAC or whatever destination format. Keep in mind with the latest versions of AviSynth it is easy to load the AC3 directly using DirectShowSource().

Wilbert
15th June 2004, 09:33
My next problem is that the file is greater than 4GB and most programs (including avisynth) only seem to see 45 minutes of data, instead of 2 hours. I assume there are some lovely 2GB/4GB limits of WAV files due to MS's poor future proofing.

How the hell do I get around this problem? Ugh!

IRC that was fixed recently. Just try the latest binaries.

hans-jürgen
15th June 2004, 09:43
Originally posted by LiFe
My next problem is that the file is greater than 4GB and most programs (including avisynth) only seem to see 45 minutes of data, instead of 2 hours. I assume there are some lovely 2GB/4GB limits of WAV files due to MS's poor future proofing. The easiest thing would be to choose a target format and codec that can encode any input (WAV or PCM) from its stdin, so you can pipe the decoded AC-3 bitstream directly to the codec without a temporary WAV file in between. FAAC can do this and is implemented in several Windows GUIs in the meantime like foobar2000, HeadAC3he, 3ivx DS filters and winLAME (no AC-3 decoding yet).