New Public Listening Test (July-August 2011)
Reply #71 – 2011-06-29 16:02:58
Thank you, /mnt What build do you use and settings? Low anchor probably should be AAC with low quality and bitrate 96 or less. I was a using Windows build from git at 26/06/2009, which lacked libfaac support. The settings was: ffmpeg -i file -acodec aac -ab 128k -strict experimental file.m4a@/mnt If ffmpeg's AAC encoder is pretty bad then 128 kbps will be good. What do you think? Then it will fulfill this request. Two birds with one stone. ffmpeg's AAC encoder seems to produce far worse results then FAAC, it's AAC's answer to Blade. I have done a new test with the offical stable release of ffmpeg 0.8 on Ubuntu 10.04 (my own compile with libx264, libxv264, libfaac and libmp3lame enabled). ffmpeg AAC settings: ffmpeg -i file -acodec aac -ab 128k -strict experimental file.m4a ffmpeg FAAC settings: ffmpeg -i file -acodec libfaac -ab 128k file-faac.m4afoo_abx 1.3.4 report foobar2000 v1.1.7 2011/06/29 15:42:18 File A: C:\Temp\Linchpin (ffmpeg AAC).m4a File B: C:\Temp\Linchpin (ffmpeg FAAC).m4a 15:42:18 : Test started. 15:42:30 : 01/01 50.0% 15:42:35 : 02/02 25.0% 15:42:41 : 03/03 12.5% 15:42:48 : 04/04 6.3% 15:42:53 : 05/05 3.1% 15:42:57 : 06/06 1.6% 15:43:05 : 07/07 0.8% 15:43:08 : 08/08 0.4% 15:43:13 : 09/09 0.2% 15:43:16 : 10/10 0.1% 15:43:21 : 11/11 0.0% 15:43:31 : 12/12 0.0% 15:43:32 : Test finished. ---------- Total: 12/12 (0.0%) Warbling and disortion on the aac encode, while faac has less harsh pre-echo but some noticable tonal disortion. However faac sounds far better.foo_abx 1.3.4 report foobar2000 v1.1.7 2011/06/29 15:44:06 File A: C:\Temp\Through Being Cool (ffmpeg AAC).m4a File B: C:\Temp\Through Being Cool (ffmpeg FAAC).m4a 15:44:06 : Test started. 15:44:19 : 01/01 50.0% 15:44:24 : 02/02 25.0% 15:44:28 : 03/03 12.5% 15:44:33 : 04/04 6.3% 15:44:43 : 05/05 3.1% 15:44:49 : 06/06 1.6% 15:44:55 : 07/07 0.8% 15:44:59 : 08/08 0.4% 15:45:05 : 09/09 0.2% 15:45:13 : 10/10 0.1% 15:45:18 : 11/11 0.0% 15:45:21 : 12/12 0.0% 15:45:22 : Test finished. ---------- Total: 12/12 (0.0%) The aac encode has horrid warbling all over the synth at the start, also it produces sharp disortion and drop outs when the lead vocals pauses. FAAC sounds better, however the vocals can produce disortion and also it struggles to cope with the recording artifacts that appear on the track.