2016-08-16 83 views
0

當我在命令行中輸入以下命令時,FFMPEG完全正確並按預期靜音視頻的各個部分。nodejs FFMPEG自變量問題

C:\>ffmpeg -y -i C:/Users/ADMINI~1/AppData/Local/Temp/2/0400028520160811144100001i100.mp4 -af "volume=enable='between(t,1,3)':volume=0, volume=enable='between(t,10,12)':volume=0, volume=enable='between(t,4,6)':volume=0, volume=enable='between(t,7,9)':volume=0" -c:v copy -movflags +faststart c:\temp\31e7ac4063d111e6bdc67f1f7f7b55d3.mp4 
ffmpeg version N-79651-ge1c2048 Copyright (c) 2000-2016 the FFmpeg developers 
    built with gcc 4.9.3 (GCC) 
    configuration: --prefix=/usr/local/x86_64-w64-mingw32 --enable-gpl --enable-nonfree --enable-libx264 --enable-libfdk_aac --enable-static --enable-runtime-cpudetect --enable-w32threads --disable-shared --disable-ffplay --disable-ffserver --arch=x86_64 --extra-cflags=-I/local/x86_64-w64-mingw32/include --extra-ldflags='-L/local/x86_64-w64-mingw32/lib -static' 
    libavutil  55. 22.101/55. 22.101 
    libavcodec  57. 38.100/57. 38.100 
    libavformat 57. 34.103/57. 34.103 
    libavdevice 57. 0.101/57. 0.101 
    libavfilter  6. 44.100/6. 44.100 
    libswscale  4. 1.100/4. 1.100 
    libswresample 2. 0.101/2. 0.101 
    libpostproc 54. 0.100/54. 0.100 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:/Users/ADMINI~1/AppData/Local/Temp/2/0400028520160811144100001i100.mp4': 
    Metadata: 
    major_brand  : isom 
    minor_version : 512 
    compatible_brands: isomiso2avc1mp41 
    encoder   : Lavf57.34.103 
    Duration: 00:00:12.78, start: 0.000000, bitrate: 4074 kb/s 
    Stream #0:0(und): Video: h264 (High) (avc1/0x31637661), yuv420p, 1280x720, 4006 kb/s, 30 fps, 30 tbr, 15360 tbn (default) 
    Metadata: 
     handler_name : VideoHandler 
    Stream #0:1(und): Audio: aac (LC) (mp4a/0x6134706D), 48000 Hz, stereo, fltp, 64 kb/s (default) 
    Metadata: 
     handler_name : SoundHandler 
[mp4 @ 03a8e5e0] Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead. 
    Last message repeated 1 times 
Output #0, mp4, to 'c:\temp\31e7ac4063d111e6bdc67f1f7f7b55d3-AudRedact.mp4': 
    Metadata: 
    major_brand  : isom 
    minor_version : 512 
    compatible_brands: isomiso2avc1mp41 
    encoder   : Lavf57.34.103 
    Stream #0:0(und): Video: h264 ([33][0][0][0]/0x0021), yuv420p, 1280x720, q=2-31, 4006 kb/s, 30 fps, 30 tbr, 15360 tbn (default) 
    Metadata: 
     handler_name : VideoHandler 
    Stream #0:1(und): Audio: aac (LC) ([64][0][0][0]/0x0040), 48000 Hz, stereo, fltp, 128 kb/s (default) 
    Metadata: 
     handler_name : SoundHandler 
     encoder   : Lavc57.38.100 aac 
Stream mapping: 
    Stream #0:0 -> #0:0 (copy) 
    Stream #0:1 -> #0:1 (aac (native) -> aac (native)) 
Press [q] to stop, [?] for help 
[mp4 @ 03a8e5e0] Starting second pass: moving the moov atom to the beginning of the file24.3x 
frame= 383 fps=0.0 q=-1.0 Lsize= 6325kB time=00:00:12.73 bitrate=4068.3kbits/s speed=24.7x 
video:6244kB audio:69kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.191899% 
[aac @ 03776160] Qavg: 51080.756 

但是,如果我建立相同的節點編程:

function redactAudio(tempFilePath, arrPairs, cb){ 
    // ffmpeg -loglevel fatal -y -i video.mp4 -af "volume=enable='between(t,5,10)':volume=0, volume=enable='between(t,15,20)':volume=0" -c:v copy -movflags +faststart output.mp4 

    var tempBuff = Buffer.alloc(16); 
    jsuuid.v1(null, tempBuff, 0); 
    var outFileName = tempBuff.toString('hex') + path2.extname(tempFilePath); 

    var volStr = '"'; 
    for (var i = 0; i < arrPairs.length; i++) { 
     volStr += "volume=enable='between(t," + arrPairs[i].start + "," + arrPairs[i].end + ")':volume=0"; 
     if (i !== arrPairs.length - 1) { 
      volStr += ", "; 
     } else { 
      volStr += '"'; 
     } 
    } 

    child_process.execFile(
     'ffmpeg', 
     [ 
      /*'-loglevel', 'fatal',*/ 
      '-y', '-i', tempFilePath, 
      '-af', volStr, 
      '-c:v', 'copy', 
      '-movflags', '+faststart', outFileName 
     ], 
     { 
      cwd: tempDir, 
      maxBuffer: Infinity 
     }, 
     function(err, stdout, stderr) { 
      if (err) { 
       console.error(clc.magentaBright(clc.whiteBright('FFMPEG - ERROR OCC: ', path2.basename(tempFilePath), ' : ', stderr, '\n'))); 
       return cb(err, 'FFMpeg Failed: ' + JSON.stringify({ stdout: stdout, stderr: stderr})); 
      } else { 
       console.log(clc.magentaBright(clc.whiteBright('FFMPEG - Finished: ', path2.basename(tempFilePath), '\n'))); 
       return cb(null, outFileName); 
      } 
     } 
    ); 
} 

,請幫助我明白是怎麼回事,因爲我從每一個節點運行時間時,得到下面的錯誤。

FFMPEG - ERROR OCC: 0400028520160811144100001i100.mp4 : ffmpeg version N-79651-ge1c2048 Copyright (c) 2000-2016 the FFmpeg developers 
    built with gcc 4.9.3 (GCC) 
    configuration: --prefix=/usr/local/x86_64-w64-mingw32 --enable-gpl --enable-nonfree --enable-libx264 --enable-libfdk_aac --enable-static --enable-runtime-cpudetect --enable-w32threads --disable-shared --disable-ffplay --disable-ffserver --arch=x86_64 --extra-cflags=-I/local/x86_64-w64-mingw32/include --extra-ldflags='-L/local/x86_64-w64-mingw32/lib -static' 
    libavutil  55. 22.101/55. 22.101 
    libavcodec  57. 38.100/57. 38.100 
    libavformat 57. 34.103/57. 34.103 
    libavdevice 57. 0.101/57. 0.101 
    libavfilter  6. 44.100/6. 44.100 
    libswscale  4. 1.100/4. 1.100 
    libswresample 2. 0.101/2. 0.101 
    libpostproc 54. 0.100/54. 0.100 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:/Users/ADMINI~1/AppData/Local/Temp/2/0400028520160811144100001i100.mp4': 
    Metadata: 
    major_brand  : isom 
    minor_version : 512 
    compatible_brands: isomiso2avc1mp41 
    encoder   : Lavf57.34.103 
    Duration: 00:00:12.78, start: 0.000000, bitrate: 4074 kb/s 
    Stream #0:0(und): Video: h264 (High) (avc1/0x31637661), yuv420p, 1280x720, 4006 kb/s, 30 fps, 30 tbr, 15360 tbn (default) 
    Metadata: 
     handler_name : VideoHandler 
    Stream #0:1(und): Audio: aac (LC) (mp4a/0x6134706D), 48000 Hz, stereo, fltp, 64 kb/s (default) 
    Metadata: 
     handler_name : SoundHandler 
[AVFilterGraph @ 00381600] No such filter: '"volume' 
Error opening filters! 

0400028520160811144100001i100.mp4 
{ Error: Command failed: ffmpeg -y -i C:/Users/ADMINI~1/AppData/Local/Temp/2/0400028520160811144100001i100.mp4 -af "volume=enable='between(t,1,3)':volume=0, volume=enable='between(t,10,12)':volume=0, volume=enable='between(t,4,6)':volume=0, volume=enable='between(t,7,9)':volume=0" -c:v copy -movflags +faststart ea1eae2063d211e6bbf2af16c2e9be57.mp4 
ffmpeg version N-79651-ge1c2048 Copyright (c) 2000-2016 the FFmpeg developers 
    built with gcc 4.9.3 (GCC) 
    configuration: --prefix=/usr/local/x86_64-w64-mingw32 --enable-gpl --enable-nonfree --enable-libx264 --enable-libfdk_aac --enable-static --enable-runtime-cpudetect --enable-w32threads --disable-shared --disable-ffplay --disable-ffserver --arch=x86_64 --extra-cflags=-I/local/x86_64-w64-mingw32/include --extra-ldflags='-L/local/x86_64-w64-mingw32/lib -static' 
    libavutil  55. 22.101/55. 22.101 
    libavcodec  57. 38.100/57. 38.100 
    libavformat 57. 34.103/57. 34.103 
    libavdevice 57. 0.101/57. 0.101 
    libavfilter  6. 44.100/6. 44.100 
    libswscale  4. 1.100/4. 1.100 
    libswresample 2. 0.101/2. 0.101 
    libpostproc 54. 0.100/54. 0.100 
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from 'C:/Users/ADMINI~1/AppData/Local/Temp/2/0400028520160811144100001i100.mp4': 
    Metadata: 
    major_brand  : isom 
    minor_version : 512 
    compatible_brands: isomiso2avc1mp41 
    encoder   : Lavf57.34.103 
    Duration: 00:00:12.78, start: 0.000000, bitrate: 4074 kb/s 
    Stream #0:0(und): Video: h264 (High) (avc1/0x31637661), yuv420p, 1280x720, 4006 kb/s, 30 fps, 30 tbr, 15360 tbn (default) 
    Metadata: 
     handler_name : VideoHandler 
    Stream #0:1(und): Audio: aac (LC) (mp4a/0x6134706D), 48000 Hz, stereo, fltp, 64 kb/s (default) 
    Metadata: 
     handler_name : SoundHandler 
[AVFilterGraph @ 00381600] No such filter: '"volume' 
Error opening filters! 

    at ChildProcess.exithandler (child_process.js:202:12) 
    at emitTwo (events.js:106:13) 
    at ChildProcess.emit (events.js:191:7) 
    at maybeClose (internal/child_process.js:850:16) 
    at Process.ChildProcess._handle.onexit (internal/child_process.js:215:5) 
    killed: false, 
    code: 1, 
    signal: null, 
    cmd: 'ffmpeg -y -i C:/Users/ADMINI~1/AppData/Local/Temp/2/0400028520160811144100001i100.mp4 -af "volume=enable=\'between(t,1,3)\':volume=0, volume=enable=\'between(t,10,12)\':volume=0, volume=enable=\'between(t,4,6)\':volume=0, volume=enable=\'between(t,7,9)\':volume=0" -c:v copy -movflags +faststart ea1eae2063d211e6bbf2af16c2e9be57.mp4' } 

最好的我能想到的是它與'volStr'有關係,但我不知道如何以其他方式創建它。


@Mulvya評論後,我改變了我的for循環

var volStr = ''; 
for (var i = 0; i < arrPairs.length; i++) { 
    volStr += "volume=enable='between(t," + arrPairs[i].start + "," + arrPairs[i].end + ")':volume=0"; 
    if (i !== arrPairs.length - 1) { 
     volStr += ","; 
    } 
} 

每個分組之間擺脫空間的,它精美的工作。

+0

'沒有這樣的過濾器:「‘volume'' - 它認爲篩選器名稱是「’volume',可能是因爲沒有被添加收盤報價。如果你可以避免任何空格,你可以在開始和結束時刪除雙引號。 – Mulvya

+0

@Mulvya你關於取出空格的建議非常好用!如果你想把它作爲答案,我會很樂意將它標記爲正確的! – shaun

回答

1

無法調試nodeJS字符串形成過程中發生了什麼,但No such filter: '"volume'表示未添加結束引用。

您有兩種解決方法。擺脫-af字符串中的空格。或者你可以做一個音量過濾器。

volume=0:enable='between(t,1,3)+between(t,4,6)+between(t,7,9)+between(t,10,12)'