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Dolby TrueHD is a lossless, multi-channel audio codec developed by Dolby Laboratories for home video, used principally in Blu-ray Disc and compatible hardware. Dolby TrueHD, along with Dolby Digital Plus (E-AC-3) and Dolby AC-4 , is one of the intended successors to the Dolby Digital (AC-3) lossy surround format.
Although commonly associated with the 5.1 channel configuration, Dolby Digital allows a number of different channel selections. The options are: Dolby Digital 1/0 – Mono (center only) Dolby Digital 2/0 – 2-channel stereo (left + right), optionally carrying matrixed Dolby Surround; Dolby Digital 3/0 – 3-channel stereo (left, center, right)
Digital TV service, Digital Radio, Internet streaming Yes AAC-LD/AAC-ELD MPEG-4 SLS: Yes FairPlay (.m4p only, discontinued) AC-3: Dolby Laboratories: 1992 ATSC A52:2018 Free DVD players, digital television, Camcorder: FFmpeg, liba52 (decoding only), Aften (encoding only), libavc (2.0 channels max)
^ h Linear PCM is the only lossless audio codec that is mandatory for both HD DVD and Blu-ray disc players, only HD DVD players are required to decode two lossless sound formats and those are Linear PCM and Dolby TrueHD. Dolby TrueHD and DTS-HD Master Audio have become sound format of choice for many studios on their Blu-ray titles but ever ...
In February 2017, live streaming was introduced to the official YouTube mobile app. Live streaming via mobile was initially restricted to users with at least 10,000 subscribers, [67] but as of mid-2017 it has been reduced to 100 subscribers. [68] Live streams support HDR, can be up to 4K resolution at 60 fps, and also support 360° video. [49] [69]
Dolby Digital Plus is seeing increasing use in digital television systems, particular in cable and satellite systems, as a replacement for Dolby Digital. Many such applications do not take advantage of its higher channel count or ability to support multiple independent programs; instead it is used as a higher-efficiency codec than AC-3.