#1346: q:a for -acodec aac --------------------------------------+--------------------------------- Reporter: cehoyos | Owner: Type: defect | Status: new Priority: normal | Component: avcodec Version: git-master | Keywords: aac Blocked By: | Blocking: Reproduced by developer: 0 | Analyzed by developer: 0 --------------------------------------+--------------------------------- The native aac encoder source code contains hints that global_quality is respected, but setting -aq makes only a minimal output file size difference. This used to work before release 0.6. {{{ $ ffmpeg -i fate-suite/lossless-audio/luckynight-partial.tta -strict experimental -q:a 0.001 -t 8 out.aac ffmpeg version N-40960-ge15f128 Copyright (c) 2000-2012 the FFmpeg developers built on May 23 2012 13:44:40 with gcc 4.3.2 configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl --enable- libopenjpeg --enable-libvorbis --enable-libspeex --enable-libmp3lame --enable-libtheora --extra-ldflags=-lm libavutil 51. 53.100 / 51. 53.100 libavcodec 54. 23.100 / 54. 23.100 libavformat 54. 6.100 / 54. 6.100 libavdevice 53. 4.100 / 53. 4.100 libavfilter 2. 76.100 / 2. 76.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 15.100 / 0. 15.100 libpostproc 52. 0.100 / 52. 0.100 Input #0, tta, from 'fate-suite/lossless-audio/luckynight-partial.tta': Duration: 00:01:00.48, start: 0.000000, bitrate: 138 kb/s Stream #0:0: Audio: tta, 44100 Hz, stereo, s16 [aformat @ 0x8f14200] auto-inserting filter 'auto-inserted resampler 0' between the filter 'src' and the filter 'aformat' [aresample @ 0x8f0b920] r:44100Hz -> r:44100Hz Output #0, adts, to 'out.aac': Metadata: encoder : Lavf54.6.100 Stream #0:0: Audio: aac, 44100 Hz, stereo, flt, 128 kb/s Stream mapping: Stream #0:0 -> #0:0 (tta -> aac) Press [q] to stop, [?] for help size= 137kB time=00:00:08.35 bitrate= 134.6kbits/s video:0kB audio:135kB global headers:0kB muxing overhead 1.826173% }}} {{{ $ ffmpeg -i fate-suite/lossless-audio/luckynight-partial.tta -strict experimental -q:a 100000 -t 8 out.aac ffmpeg version N-40960-ge15f128 Copyright (c) 2000-2012 the FFmpeg developers built on May 23 2012 13:44:40 with gcc 4.3.2 configuration: --cc=/usr/local/gcc-4.3.2/bin/gcc --enable-gpl --enable- libopenjpeg --enable-libvorbis --enable-libspeex --enable-libmp3lame --enable-libtheora --extra-ldflags=-lm libavutil 51. 53.100 / 51. 53.100 libavcodec 54. 23.100 / 54. 23.100 libavformat 54. 6.100 / 54. 6.100 libavdevice 53. 4.100 / 53. 4.100 libavfilter 2. 76.100 / 2. 76.100 libswscale 2. 1.100 / 2. 1.100 libswresample 0. 15.100 / 0. 15.100 libpostproc 52. 0.100 / 52. 0.100 Input #0, tta, from 'fate-suite/lossless-audio/luckynight-partial.tta': Duration: 00:01:00.48, start: 0.000000, bitrate: 138 kb/s Stream #0:0: Audio: tta, 44100 Hz, stereo, s16 [aformat @ 0x8f14200] auto-inserting filter 'auto-inserted resampler 0' between the filter 'src' and the filter 'aformat' [aresample @ 0x8f0b920] r:44100Hz -> r:44100Hz Output #0, adts, to 'out.aac': Metadata: encoder : Lavf54.6.100 Stream #0:0: Audio: aac, 44100 Hz, stereo, flt, 128 kb/s Stream mapping: Stream #0:0 -> #0:0 (tta -> aac) Press [q] to stop, [?] for help size= 144kB time=00:00:08.35 bitrate= 140.9kbits/s video:0kB audio:141kB global headers:0kB muxing overhead 1.742700% }}}
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