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I'd guess AAC is technically possible, but not actually supported. A list of formats from a random current receiver is: 2-channel Linear PCM: 2-channel, 32 kHz

by toast0 2y ago

I'd guess AAC is technically possible, but not actually supported. A list of formats from a random current receiver is: 2-channel Linear PCM: 2-channel, 32 kHz – 192 kHz, 16/20/24 bit Multi-channel Linear PCM : 7.1-channel, 32 kHz – 192 kHz, 16/20/24 bit Bitstream: Dolby Digital / DTS / Dolby Atmos / Dolby TrueHD / Dolby Digital Plus / DTS:X / DTS-HD Master Audio / DTS-HD High Resolution Audio / DTS Express I'd imagine whatever source is getting AAC is going to need to decode it and send as linear PCM, which should be fine.

piperswe 2y ago
In my experience multi-channel AAC gets sent as multi-channel LPCM over HDMI, whether that be eARC or not. That's fine though, I don't really care what part of the chain does the AAC decoding because it has to be turned into LPCM _somewhere_.