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Originally Posted by an3k
So in short AC-3 is like MP3 CBR?!
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More or less, yes.
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I have other files. Some with 24-Bit DTS-HD and 16-Bit DTS Core, some with 16-Bit DTS-HD and 24-Bit Core and last but not least 16-Bit/16-Bit as well as 24-Bit/24-Bit. I just re-checked with MediaInfo and even for (lossy) DTS I get a Bitdepth shown.
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Lossy DTS (Core) don't have bitdepth, and MediaInfo is wrong when show that info (and others infos).
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I read that based on the bitrate AC-3 limits the available frequency range, eg. 256 kbps up to 12 kHz, 384 kbps up to 18 kHz and 448 kbps or higher with full 20 kHz. Is that true?
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Is a encoder option, but is recommended for 5.1.
For 2.0: 112 Kb/s up to 12.4 KHz, 160 Kb/s up to 15.8 KHz, 192 Kb/s or higer up to 20.3 KHz