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.ac3 and .dts, Insight into formats
chanakyasun
post Feb 1 2011, 06:41
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How will be the structure of files with extention .ac3 , .dts , .dtshd?

How is the Metadata (artist , trach, album) stored in these formats?

are there any special container formats for .ac3 and .dts? sad.gif


I found information telling about dolby digital .....

I need overview on these audio formats Pls



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saratoga
post Feb 1 2011, 06:53
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I think they're just raw compressed audio streams. I don't think either is widely tagged, although its possible something out there can stick ID3 tags on them.
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chanakyasun
post Feb 1 2011, 07:50
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QUOTE (saratoga @ Feb 1 2011, 07:53) *
I think they're just raw compressed audio streams. I don't think either is widely tagged, although its possible something out there can stick ID3 tags on them.


if they're just raw compressed audio streams , i have doubt as following
there are different dolby digital or dts audio techiniques like dolby digital plus, dts-es, dts-master audioHD ...
how will we know that the content in side the audio file.
How different are these audio formats?
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saratoga
post Feb 1 2011, 17:12
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QUOTE (chanakyasun @ Feb 1 2011, 01:50) *
how will we know that the content in side the audio file.


I don't think you do until you decode it. But no one uses raw streams so its not an issue. They're always in some other container.

QUOTE (chanakyasun @ Feb 1 2011, 01:50) *
How different are these audio formats?


Rather different. AC3 is a conventional if extremely primitive MDCT encoder like AAC or Vorbis. DTS is a subband coder like MP2 or MPC. DTS-AudioHD or whatever they call it is (IIRC) a hybrid lossy/lossless codec more like wavpack.
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