如何使用ffmpeg將6個音頻通道轉換爲一個5.1通道？

Question

我有一個pro-res文件，它有6個單聲道音頻通道。 這裏的ffmpeg的控制檯：

:\test-remapping>ffmpeg -i MelleParadis_PART1_CONSTANTE.mov 
ffmpeg version N-60106-ge6d1c66 Copyright (c) 2000-2014 the FFmpeg developers 
    built on Jan 22 2014 22:01:26 with gcc 4.8.2 (GCC) 
    configuration: --enable-gpl --enable-version3 --disable-w32threads --enable-av 
isynth --enable-bzlib --enable-fontconfig --enable-frei0r --enable-gnutls --enab 
le-iconv --enable-libass --enable-libbluray --enable-libcaca --enable-libfreetyp 
e --enable-libgsm --enable-libilbc --enable-libmodplug --enable-libmp3lame --ena 
ble-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-l 
ibopus --enable-librtmp --enable-libschroedinger --enable-libsoxr --enable-libsp 
eex --enable-libtheora --enable-libtwolame --enable-libvidstab --enable-libvo-aa 
cenc --enable-libvo-amrwbenc --enable-libvorbis --enable-libvpx --enable-libwavp 
ack --enable-libx264 --enable-libxavs --enable-libxvid --enable-zlib 
    libavutil  52. 63.100/52. 63.100 
    libavcodec  55. 49.100/55. 49.100 
    libavformat 55. 25.101/55. 25.101 
    libavdevice 55. 5.102/55. 5.102 
    libavfilter  4. 1.100/4. 1.100 
    libswscale  2. 5.101/2. 5.101 
    libswresample 0. 17.104/0. 17.104 
    libpostproc 52. 3.100/52. 3.100 
Guessed Channel Layout for Input Stream #0.1 : mono 
Guessed Channel Layout for Input Stream #0.2 : mono 
Guessed Channel Layout for Input Stream #0.3 : mono 
Guessed Channel Layout for Input Stream #0.4 : mono 
Guessed Channel Layout for Input Stream #0.5 : mono 
Guessed Channel Layout for Input Stream #0.6 : mono 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'MelleParadis_PART1_CONSTANTE.mov': 
    Metadata: 
    major_brand  : qt 
    minor_version : 537199360 
    compatible_brands: qt 
    creation_time : 2013-11-27 18:58:26 
    Duration: 00:07:34.32, start: 0.000000, bitrate: 117742 kb/s 
    Stream #0:0(eng): Video: prores (apcn/0x6E637061), yuv422p10le, 1920x1080, 
113098 kb/s, SAR 1:1 DAR 16:9, 25 fps, 25 tbr, 25 tbn, 25 tbc (default) 
    Metadata: 
     creation_time : 2013-11-27 18:58:26 
     handler_name : Gestionnaire dıalias Apple 
     timecode  : 01:00:00:00 
    Stream #0:1(eng): Audio: pcm_s16le (sowt/0x74776F73), 48000 Hz, mono, s16, 
768 kb/s (default) 
    Metadata: 
     creation_time : 2013-11-27 18:58:26 
     handler_name : Gestionnaire dıalias Apple 
    Stream #0:2(eng): Audio: pcm_s16le (sowt/0x74776F73), 48000 Hz, mono, s16, 
768 kb/s (default) 
    Metadata: 
     creation_time : 2013-11-27 18:58:26 
     handler_name : Gestionnaire dıalias Apple 
    Stream #0:3(eng): Audio: pcm_s16le (sowt/0x74776F73), 48000 Hz, mono, s16, 
768 kb/s (default) 
    Metadata: 
     creation_time : 2013-11-27 18:58:26 
     handler_name : Gestionnaire dıalias Apple 
    Stream #0:4(eng): Audio: pcm_s16le (sowt/0x74776F73), 48000 Hz, mono, s16, 
768 kb/s (default) 
    Metadata: 
     creation_time : 2013-11-27 18:58:26 
     handler_name : Gestionnaire dıalias Apple 
    Stream #0:5(eng): Audio: pcm_s16le (sowt/0x74776F73), 48000 Hz, mono, s16, 
768 kb/s (default) 
    Metadata: 
     creation_time : 2013-11-27 18:58:26 
     handler_name : Gestionnaire dıalias Apple 
    Stream #0:6(eng): Audio: pcm_s16le (sowt/0x74776F73), 48000 Hz, mono, s16, 
768 kb/s (default) 
    Metadata: 
     creation_time : 2013-11-27 18:58:26 
     handler_name : Gestionnaire dıalias Apple 
    Stream #0:7(eng): Data: none (tmcd/0x64636D74) (default) 
    Metadata: 
     creation_time : 2013-11-27 19:03:46 
     handler_name : Gestionnaire dıalias Apple 
     timecode  : 01:00:00:00`` 

我想將它們轉換成一個5.1聲道

我嘗試這行代碼：

D:\test-remapping>ffmpeg -i "MelleParadis_PART1_CONSTANTE.mov" -c copy -c:a ac3 -map 0 mlle5.1.mov 

控制檯回答「沒有足夠的空間」並停止... 當然，我的硬盤仍然有一些空間... 我怎樣才能將所有6個單聲道流映射到5.1？ 在此先感謝。 寶蓮

Answer 1

從https://trac.ffmpeg.org/wiki/AudioChannelManipulation

ffmpeg -i front_left.wav -i front_right.wav -i front_center.wav -i lfe.wav -i back_left.wav -i back_right.wav \ 
-filter_complex "[0:a][1:a][2:a][3:a][4:a][5:a] amerge=inputs=6" output.wav