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HandBrake and FFmpeg are capable of downmixing Dolby Digital AC-3 5.1 to Lt/Rt stereo tracks compatible with Dolby Pro Logic I & II decoders. SurCode for Dolby Pro Logic II is a Dolby-certified software encoder and decoder available in plug-in formats for DAWs and as a standalone application.
Matrix decoding is an audio technology where a small number of discrete audio channels (e.g., 2) are decoded into a larger number of channels on play back (e.g., 5). The channels are generally, but not always, arranged for transmission or recording by an encoder, and decoded for playback by a decoder.
The theater version of Dolby Digital Surround EX was introduced in 1999, when Dolby and THX, a division of Lucasfilm Ltd., co-developed Dolby Digital Surround EX™ for the release of Star Wars: Episode I – The Phantom Menace. [21] [26] Dolby Digital Surround EX has since been used on the DVD releases of the Star Wars prequel and original ...
There is also FAAC, the same project's encoder, but it is proprietary (but still free of charge). libgsm – Lossy compression ; opencore-amr – Lossy compression (AMR and AMR-WB) liba52 – a free ATSC A/52 stream decoder (AC-3) libdca – a free DTS Coherent Acoustics decoder; Codec2 – Low bitrate compression, primarily voice
Free and open-source software portal; libavcodec is a free and open-source [4] library of codecs for encoding and decoding video and audio data. [5]libavcodec is an integral part of many open-source multimedia applications and frameworks.
However, Dolby Digital Plus is a functional superset of Dolby Digital, and decoders include a mandatory component that directly converts (without decoding and re-encoding) the Dolby Digital Plus bitstream to a Dolby Digital bitstream (operating at 640 kbit/s) for carriage via legacy S/PDIF connections (including S/PDIF over HDMI) to external ...
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Theatrical movie presentation, Digital TV service & home-video (personal recorders, DVD, etc.) No No No No ? AC-4: Dolby Laboratories: 2014 ATSC A342:2022-03 Non-free Digital television, Harmonic Inc., DS Broadcast, Ateme, Synamedia, Dolby Media Encoder & Dolby Encoding Engine ExoPlayer (decoding only for supported mobile devices) Digital TV ...