Change Deezer streaming codec from MP3 to AAC

Why not Ogg Opus?

https://en.wikipedia.org/wiki/Opus_(audio_format)

No Ogg Opus because AptX and AAC are native supported streaming protocols supported by almost every Bluetooth headphone manufactor.

That is really good idea. I am happy, that with Deezer Hifi is possible to stream cd quality (and MQA later), but on mobile device, mp3 at 128 is terrible. As i know, only aac codec at 64kb/s is used in "Basic" audio setting on mobile device. Other (Standard and High) are using mp3 and that is not good. IPhone is using AAC codec and apt-x devices also needs better source, than mp3.

For a better audio fidelity experience Deezer should change the streaming codec from the old inefficient mp3 to the newer and more efficient ACC which a.o. enables newer Blutooth headphones to sound better, because no conversion is needed.

I've heard this claim about AAC Bluetooth pass hrough before, but I haven't been able to find a reliable source to back it up, and I've also heard that AAC audio is recompressed a second time with AAC anyway and still loses quality. Cam anyone give a definitive answer for this?

I believe even "the one" that streams with AAC will recompress on BT AAC, because it streams at 256 Kbps AAC while BT only support AAC up to 250 Kbps

Hello! Is there AAC coding support in Deezer because I use bluetooth headphones and it provides me AAC coding

Hi @julia62 not at the moment, but we might have this in the future. You are welcome to vote for this above 😉

For a better audio fidelity experience Deezer should change the streaming codec from the old inefficient mp3 to the newer and more efficient ACC which a.o. enables newer Blutooth headphones to sound better, because no conversion is needed.I've heard this claim about AAC Bluetooth pass hrough before, but I haven't been able to find a reliable source to back it up, and I've also heard that AAC audio is recompressed a second time with AAC anyway and still loses quality. Cam anyone give a definitive answer for this?

AAC is superior to mp3 by every stretch of imagination, it gets better fidelity at the same bitrate, (like when comparimg a 256kbps mp3 vs a 256kps aac, aac will be better), it would also occupy less space in this same scenario, so basically AAC gives you better quality in less space.

You can even let the AAC Codec at a variable bitrate in a way that it would be able to reach well over 500kbps when its needed, like when theres a big crescendo in that classical concert with 300+ instruments, originally recorded in 192khz and converted from 5000kbps FLAC to AAC. That gives you even better quality than mp3 can ever dream of achieving.

But you need to convert the original source or at least a lossless version like FLAC to AAC not an MP3 file to AAC, that would be recompressing, also, quoting our friend Mark, AAC is a native codec over bluetooth, that basically means thats the codec bluetooth 4.0 aptx runs at, that means anything else will be encoded into AAC passing through a recompression as you mentioned. But that shouldn't take that much off of the music if you're converting from MP3, should still make a little difference. But it wouod be really hard to make a comparison.

It might or might not make a difference in latency but that depends on a lot of things so I wouldn't count that as a plus for AAC,