Dolby Atmos / Dolby TrueHD

[Brandon K]

From my limited understanding from Google and from using MediaInfo, Dolby Atmos on Blu-ray is an extension of Dolby TrueHD, and is encoded on discs using the Dolby TrueHD codec?

Since Dolby Atmos has no sampling rate / bit depth info selectable (48kHz, 24-bit), am I to understand that when adding the specs, we are to put first a Dolby Atmos "track" and then to put another "track" as TrueHD, even though there's only technically 1 track?

[AdmiralNoodles]

Originally Posted by Brandon K

From my limited understanding from Google and from using MediaInfo, Dolby Atmos on Blu-ray is an extension of Dolby TrueHD, and is encoded on discs using the Dolby TrueHD codec?

Since Dolby Atmos has no sampling rate / bit depth info selectable (48kHz, 24-bit), am I to understand that when adding the specs, we are to put first a Dolby Atmos "track" and then to put another "track" as TrueHD, even though there's only technically 1 track?

Does it show up using BDInfo? That's a helpful program.

[inaneswine]

Originally Posted by Brandon K

From my limited understanding from Google and from using MediaInfo, Dolby Atmos on Blu-ray is an extension of Dolby TrueHD, and is encoded on discs using the Dolby TrueHD codec?

Since Dolby Atmos has no sampling rate / bit depth info selectable (48kHz, 24-bit), am I to understand that when adding the specs, we are to put first a Dolby Atmos "track" and then to put another "track" as TrueHD, even though there's only technically 1 track?

I've been wondering about this. Using BDInfo, I extracted the following info from two different Blu-rays:

10 Cloverfield Lane:
Audio: English / Dolby TrueHD/Atmos Audio / 7.1 / 48 kHz / 4614 kbps / 24-bit (AC3 Embedded: 5.1-EX / 48 kHz / 640 kbps / DN -27dB)

Jigsaw:
Audio: English / Dolby TrueHD/Atmos Audio / 7.1 / 48 kHz / 3824 kbps / 24-bit (AC3 Embedded: 5.1-EX / 48 kHz / 640 kbps / DN -31dB)


So I believe that the track is, by default, a Dolby TrueHD 7.1 track. If bitstream is enabled and the appropriate hardware is available, then it becomes a Dolby Atmos track. So since it is only one track, should it then be listed only as one? As you can see from the two titles above, listing of Atmos tracks alongside 7.1 tracks seems inconsistent.