francescoJust use any of 1.2.1 binaries posted in this topic.
Error parsing input file: song.flac
Given the quality improvements (which are great!), shouldn’t the Opus line be moved (or tilted) up accordingly here:
Why no AAC <40 kbps on this graph?
Quote from: niga_in_da_block on 03 September, 2017, 07:01:14 PMWhy no AAC <40 kbps on this graph?Has anyone actually done that comparison with Opus?
Quote from: bandpass on 13 July, 2017, 04:15:49 AMGiven the quality improvements (which are great!), shouldn’t the Opus line be moved (or tilted) up accordingly here:You're right, I noticed the same some time ago. Now fullband is being supported down to 14 kbps.
Someone should re-do the graph and make it really, really crude. Like with pencil on the inside cardboard of a cereal box or something. Couple mistakes and also use an eraser each time something makes.My thinking is, this would epitomize the approximate nature of the graph. Bonus points for fitting the entire graph inside a 8x8cm box, and use crayons to draw the lines.
Actually, that figure started off pretty much like what you're describing when presented at an IETF meeting (see slide 15).
Kamedo2, I see the same graph there.
apt install opus-toolswget https://archive.mozilla.org/pub/opus/opus-1.2.1.tar.gzunp opus-1.2.1.tar.gzcd to there./configuremakesudo make installsudo ldconfigopusenc --versionopusenc opus-tools 0.1.10 (using libopus 1.2.1)Copyright (C) 2008-2017 Xiph.Org Foundation
Original: https://opus-codec.org/static/comparison/quality.svgMy rework: https://ss1.coressl.jp/listening-test.coresv.net/img2/quality6.svg
Better to ask here I guess: how do I put Opus in a CAF container with foobar2000?
Is the lower contrast intentional?
Also, when it comes to fullband mono and fullband stereo, there's no smooth transition as such. There should be some clarity that there's an overlap, or even better: make two different diagrams altogether.I'd love to add some more codecs, though. Especially AMR-WB+, AC3, Atrac, G.729, and G.729.1 (recently expired patents).
afconvert -d opus -f caff -q 127 -b 48000 -s 3
Quote from: eahm on 13 September, 2017, 12:54:03 AMKamedo2, I see the same graph there.Sorry, updated. Original: https://opus-codec.org/static/comparison/quality.svgMy rework: https://ss1.coressl.jp/listening-test.coresv.net/img2/quality6.svg
Maybe AAC could also be extended to go below 32Kbps? The only problem is that quality and bandwidth is mixed, so it might be a straight line extending to the left.I think a better graph would be a graph that nearly looks the same, but with the 'narrowband, wideband etc.' sections removed and the color of the line determines the bandwidth.Like 'Yellow = Narrowband, Orange = Wideband, Fullband = Green etc.'