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21st September 2009, 14:22 | #1 | Link |
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DTS-HD Decoding (ffmpeg?)
Hi,
Does anyone know if DTS-HD decoding is being worked on in any project (i.e. ffmpeg), and if so at what stage of development it's at? I can't seem to find any info on the subject. Many thanks! |
18th November 2011, 21:33 | #4 | Link |
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I doubt it will ever happen. The papers cost thousands of dollars, and I'm pretty sure if a person purchased the specs and used them to write a freeware codec, DTS would send a SWAT team to bust down their door. Even if it is partially figured out, it won't be compliant and will be buggy. Just look at the ArcSoft decoder. There is so much crap that it won't even work on correctly (mono, HiRes, weird 7.1 channel-arrangement stuff, etc.) and that is an official, royalty-paid decoder.
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21st November 2011, 15:35 | #6 | Link |
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I don't know how to convince you any differently, but I have a bunch of versions of Arcsoft, and they all have the same problems with the one weird 7.1 speaker scheme, anything Mono (lossless or lossy), and 6.1 stuff. I have to revert back to a virtual machine of XP with the DTS Suite software, make a fake file to grab a header from, slap that header into the file I'm working with, use the DTS Suite's player to give me my WAVs, then use something like WaveWizard to give me a multichannel wave, then finally eac3to to give me a FLAC.
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21st November 2011, 16:06 | #7 | Link |
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I doubt the fact that DTS-HD is proprietary is a major stumbling block; those devs seem to be able to RE just about anything. Perhaps it is just a lack of interest/time.
EDIT: "those devs" meaning FFmpeg/Libav. Last edited by nixo; 21st November 2011 at 16:21. |
21st November 2011, 16:08 | #8 | Link |
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Well, even so, it wouldn't be a fully compliant decoder, it would just be a guess on how the standard is written, unlike all of the Dolby equivalents which seem to be nice and open. There was plenty of black-market ALAC crap, but they were all guesses, then the code was opened.
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5th January 2012, 17:49 | #11 | Link | |
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Quote:
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5th January 2012, 17:56 | #13 | Link | |
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Then extra code would be needed to cover corrupted headers but that doesn't sound like those would be compliant files. But this is no different than for any other format where obviously you will need to handle cases of headers being corrupted, etc anyway. |
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