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View Full Version : Converting AAC to anything else


fizgig10
27th January 2004, 19:35
(There's a reason I'm posting this message in the audio section, stay with me...)

I converted a 2-side DVD (Ben Hur) to one big ogm containing an Xvid stream and an aac stream. Trouble is, when I get halfway through the movie the sound suddenly is off by around 25 seconds. Obviously, this occurs where the transition between sides of the DVD was.

So.... I don't have the DVD anymore and I'm trying different options. I thought I could save the first half of the movie to one file and the second half to another file where I could play with the offset. Trouble is, when VirtualDubMod (1.5.10) saves the first half to a file, I can't play the file - zoomplayer and classic both fail.

Ok, I say to myself, I'll just demux the AAC 5.1 stream (using VirtualDubMod) and decode it to Wav (using Faad2) and then recode to 2-channel vorbis since I shouldn't have any problem resynching that. I download faad2 (V2.0 RC3) and try this: "faad -d benhur.aac" since I want to downmix to 2 channels. I get the error "Gain control not yet implemented". Even when I take out the -d switch I still get the same error.

I'm running out of ideas here. Anyone have any advice as to how to accomplish my main goal of resynching the 2nd half of my ogm file?

Thanks for reading!

KpeX
28th January 2004, 04:33
You could decode with Graphedit and CoreAAC. Remember that reencoding will result in a significant audio quality loss. I'd recommend reripping from DVD.