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HTML5 AAC Audio Playback Tests - Multichannel - …
https://www2.iis.fraunhofer.de/AAC/multichannel.html
The AAC codec family has supported up to 48 channels of audio since its initial development through predefined channel configurations and a flexible escape mechanism.
ffmpeg: Add multichannel audio stream (ac3 to aac) - …
https://stackoverflow.com/questions/67069945/ffmpeg-add-multichannel-audio-stream-ac3-to-aac
I want my first audio stream to be stereo (by default) and my second to be multichannel (5.1 surround) in my .mp4 video. There's no problem in replacing the stereo audio stream, but when I try to add a 5.1 multichannel audio stream to the video, ffmpeg does only take the first two channels (front left and right speakers).
AAC Multichannel Playback Test Documents
https://www2.iis.fraunhofer.de/AAC/docs.html
AES Convention Paper: MPEG Unified Speech and Audio Coding - the ISO/MPEG Standard for High-Efficiency Audio Coding of All Content Types. xHE-AAC section of the main Fraunhofer IIS site. Line-Up Tones and Channel Identification. EBU Technical Document 3304, Multichannel Audio Line-up Tones, Geneva, May 2009. EBU Technical Recommendation R49 ...
AAC MultiCHannel Audio - VideoHelp Forum
https://forum.videohelp.com/threads/383026-AAC-MultiCHannel-Audio
I'm not quite sure, but IMO any up-to-date FFMPEG based encoder can convert AAC to DTS. If not, and if you don't need 6.1 or 7.1 (maybe even with Atmos), you might want to stick to AC3. Or do as sneaker said. If you want to squeeze your audio a little, try FLAC - if supported by your system. Das Leben ist eine Nebelwand voller Rasierklingen.
Multichannel AAC on iOS - Hydrogenaudio
https://hydrogenaud.io/index.php?topic=114640.0
It can create iOS native files that include both stereo AAC and multichannel AC3. From a little of my research, AAC 5.1 is not really a thing. iTunes purchases with multichannel audio have two audio tracks: one in AC3 format for multichannel and …
High-fidelity multichannel audio coding with …
http://mcl.usc.edu/wp-content/uploads/2014/01/200307-High-fidelity-multichannel-audio-coding-with-Karhunen-Loeve-transform.pdf
Among several existing multichannel audio compression algorithms, Dolby AC-3 and MPEG Advanced Audio Coding (AAC) are the two most prevalent perceptual digital audio coding systems. Dolby AC-3 is the third generation of digital audio compression systems from Dolby Laboratories, and has been adopted as the audio standard for High Definition Tele-
Advanced Audio Coding (MPEG-2) - loc.gov
https://www.loc.gov/preservation/digital/formats/fdd/fdd000036.shtml
Advanced Audio Coding (AAC). Standard for higher-quality multichannel audio than achievable using MPEG-1 backwards-compatible audio (MP3 and others). Useful references URLs "MP3 and AAC Explained" is a 1999 article by Karlheinz Brandenburg, Fraunhofer Institute, Erlangen, Germany. It has good detail but with a focus on AAC_MP2.
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