[FFmpeg-user] Default audio bitrate changed?

[Lucien Pullen]

The manual states that the default audio bitrate is 64k. However, it
seems to have changed to 128k silently. Is this change going to stick
(should the manual be updated), or is this just temporary?

% ffmpeg -i 01\ --\ Musique_Des_Machines_1.flac 01\ --\ Musique_Des_Machines_1.m4a
ffmpeg version N-35231-g5c15b78, Copyright (c) 2000-2011 the FFmpeg developers
  built on Nov 26 2011 17:49:37 with gcc 4.2.1 (Apple Inc. build 5666) (dot 3)
  configuration: --enable-gpl --enable-libfaac --enable-libvorbis --enable-libx264 --enable-nonfree --enable-x11grab --extra-cflags=-I/opt/local/include --extra-cflags=-I/opt/local/include/X11 --extra-cflags=-I/usr/local/include --extra-cflags='-I/usr/local/include/SDL -D_GNU_SOURCE=1 -D_THREAD_SAFE' --extra-ldflags=-L/opt/local/lib --extra-ldflags=-L/usr/local/lib --extra-ldflags='-L/usr/local/lib /usr/local/lib/libSDLmain.a /usr/local/lib/libSDL.a -Wl,-framework,OpenGL -Wl,-framework,Cocoa -Wl,-framework,ApplicationServices -Wl,-framework,Carbon -Wl,-framework,AudioToolbox -Wl,-framework,AudioUnit -Wl,-framework,IOKit'
  libavutil    51. 29. 1 / 51. 29. 1
  libavcodec   53. 38. 1 / 53. 38. 1
  libavformat  53. 22. 0 / 53. 22. 0
  libavdevice  53.  4. 0 / 53.  4. 0
  libavfilter   2. 50. 0 /  2. 50. 0
  libswscale    2.  1. 0 /  2.  1. 0
  libpostproc  51.  2. 0 / 51.  2. 0
[flac @ 0x101809800] max_analyze_duration 5000000 reached at 5015510
Input #0, flac, from '01 -- Musique_Des_Machines_1.flac':
  Metadata:
    TITLE           : Musique Des Machines 1
    track           : 1
    TRACKOF         : 2
    ARTIST          : Broekhuis, Keller & Schönwälder
    ALBUM           : Musique Des Machines
    GENRE           : Electronic
    SUBGENRE1       : Berlin School
    SUBGENRE2       : Trance
    DATE            : 2005
    DATE-RECORDED   : 2003
    ENCODER         : Lavf53.4.0
  Duration: 00:26:22.56, bitrate: 818 kb/s
    Stream #0:0: Audio: flac, 44100 Hz, stereo, s16
Output #0, ipod, to '01 -- Musique_Des_Machines_1.m4a':
  Metadata:
    TITLE           : Musique Des Machines 1
    track           : 1
    TRACKOF         : 2
    ARTIST          : Broekhuis, Keller & Schönwälder
    ALBUM           : Musique Des Machines
    GENRE           : Electronic
    SUBGENRE1       : Berlin School
    SUBGENRE2       : Trance
    DATE            : 2005
    DATE-RECORDED   : 2003
    encoder         : Lavf53.22.0
    Stream #0:0: Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 128 kb/s
Stream mapping:
  Stream #0:0 -> #0:0 (flac -> libfaac)
Press [q] to stop, [?] for help
sample/frame number mismatch in adjacent frameskbits/s    
size=   25229kB time=00:26:22.60 bitrate= 130.6kbits/s    
video:0kB audio:24695kB global headers:0kB muxing overhead 2.159891%