Are all your devices Dolby AC-4 ready, Jow Forums?
I hope so because when everybody makes the switch from AC3 and Plus to AC4, you don't wanna be left out, do you?
DOLBY AC-4, THE ANSWER TO THE OPUS CODEC. COMING SOON TO EVERY VIDEO FILE YOU WILL PIRATE
Thomas Nelson
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Logan Foster
It will probably come with a very aggressive license. Hopefully it won't get traction over a more free standard.
Grayson Rodriguez
>Hopefully it won't get traction over a more free standard.
Pretty sure all your Netflix, Amazon, and Bluray rips will be AC4, not Opus or whatever meme codec you think will make it.
John Clark
I see no reason for anyone to care, what's the thing that would make this audio format matter?
Gavin Nelson
Mason Ortiz
>transcodes to opus at 160 and then muxes
>implying i give a fuck
Jack Moore
I'll only be interested when it can be decoded in hardware
Colton Butler
it will
Zachary Parker
ATSC 3.0 is going to have AC-4. Reminds me of the time they bribed MIT to vote for AC-3 for the original ATSC HDTV standard.
tech.mit.edu
Jaxson Brown
At a price. Remember how great AC-3 support was?
Christopher Miller
enjoy paying!
Connor Walker
so what bitrates are we talking for AC4? they say "lowest possible bit rates" but don't give numbers.
opus 1.3:
>96kbps = good average bitrate
>128kbps = only some audio samples are distinguishable from lossless
>192kbps = transparent
Christian Scott
I'm only interested if it can be transmitted over SPDIF/TOSLINK. Using HDMI for both video and audio, requiring expensive and complex HDMI receivers and drastically limiting alternative/DIY solutions, was a big mistake.
Charles Walker
>they say "lowest possible bit rates" but don't give numbers.
yes they do.
blog.dolby.com
Hunter Mitchell
I fairly confident they can't beat Opus, but they could potentially be as good as Apple AAC-LC or something like that. But the video industry does not care about beating Opus and will simply bend over and give them all the money in the world, meaning we will end up paying for it.
>5.1 no samples
>not even AC-4 converted to FLAC samples
Owen Wood
>as low as 96 kilobits/second
that doesn't really say anything though. is that the technical lower limit and nothing lower is possible? or is that the lowest bitrate without obvious artifacts? the latter would be impressive but i'm guessing they mean the former.
Caleb Adams
shit
Noah Nguyen
this
Parker Myers
ew
Isaiah Perry
everything voip uses opus
Asher Wright
this isn't about voip
Thomas James
afaik opus wasn't started for your netflix
Jackson White
I don't care since most of my PC stuff gets decoded to lossless, multi-channel wav out over HDMI to AVR anyhow.
Asher Reyes
All big net corporations seem to force AV1 since it's efficient and, supposedly, patent-free. But why isn't there a similar development for audio codecs? Wouldn't Netflix, Google, etc. have an interest in a royalty-free audio codec that hardware vendors will implement, just as AV1?
Isaac Jackson
That's opus. Opus is easy to decode so hardware isn't really needed to decode it.
Christian Powell
Google is already using opus on Youtube.