php - ffmpeg 终止而没有任何输出

Question

我正在使用 ffmpeg 将视频文件转换为 mp4。这是我的代码

    echo "converting ".basename($src)." --- to --- ".basename($dest).".mp4...<br />";
$command = FFMPEG.' -i ' . $src . ' -sameq -strict -2 -vcodec libx264 -ar 22050 -y ' . $dest.'.mp4 2>&1';   //
echo $command.'<br>';

exec($command,$output,$status);
echo '<pre>',join('<br>',$output),'</pre><br>';

if($status == 0) {              // Success
    echo 'Successfully converted to MP4!<br />';
} else {
    echo $status."<br>failed<br>";
} 

该代码在我的本地主机(Windows 7 + wamp)上运行良好。但在实时服务器上，只有 $command 被回显......并且脚本被终止。生成了输出文件，但它只有 4.5MB(应该是 17MB 左右)并且不完整......有时我得到以下输出......

    ffmpeg version 0.11.1 Copyright (c) 2000-2012 the FFmpeg developers  built on Sep 10 2012 00:38:24 with gcc 4.1.2 20080704 (Red Hat 4.1.2-52)  configuration: --prefix=/home/one01qsc/local --extra-cflags='-L/home/one01qsc/local/lib/ -I /home/one01qsc/local/include/' --extra-ldflags='-L/home/one01qsc/local/lib/ -Wl,-rpath,/home/one01qsc/local/lib/' --enable-libmp3lame --enable-libvorbis --enable-shared --disable-yasm --enable-libtheora --enable-libx264 --enable-gpl
  libavutil      51. 54.100 / 51. 54.100
  libavcodec     54. 23.100 / 54. 23.100
  libavformat    54.  6.100 / 54.  6.100
  libavdevice    54.  0.100 / 54.  0.100
  libavfilter     2. 77.100 /  2. 77.100
  libswscale      2.  1.100 /  2.  1.100
  libswresample   0. 15.100 /  0. 15.100
  libpostproc    52.  0.100 / 52.  0.100
Input #0, mov,mp4,m4a,3gp,3g2,mj2, from '/home/one01qsc/public_html/temp/pending/1455-testing-mobidick.mov':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2012-09-08 16:00:41
  Duration: 00:00:23.13, start: 0.490000, bitrate: 6028 kb/s
    Stream #0:0: Video: h264 (High) (avc1 / 0x31637661), yuv420p, 1920x1080, 5331 kb/s, 29.97 fps, 29.97 tbr, 60k tbn, 59.94 tbc
    Metadata:
      creation_time   : 2012-09-08 16:00:41
      handler_name    : Apple Alias Data Handler
    Stream #0:1: Audio: aac (mp4a / 0x6134706D), 44100 Hz, stereo, s16, 192 kb/s
    Metadata:
      creation_time   : 2012-09-08 16:00:41
      handler_name    : Apple Alias Data Handler
[buffer @ 0x2405ce0] w:1920 h:1080 pixfmt:yuv420p tb:1/60000 sar:0/1 sws_param:flags=2
[buffersink @ 0x2429ec0] No opaque field provided
[aformat @ 0x23fa560] auto-inserting filter 'auto-inserted resampler 0' between the filter 'src' and the filter 'aformat'
[aresample @ 0x2402e60] chl:stereo fmt:s16 r:44100Hz -> chl:stereo fmt:flt r:22050Hz
[libx264 @ 0x24288e0] using cpu capabilities: none!
[libx264 @ 0x24288e0] profile High, level 4.0
[libx264 @ 0x24288e0] 264 - core 128 - H.264/MPEG-4 AVC codec - Copyleft 2003-2012 - http://www.videolan.org/x264.html - options: cabac=1 ref=3 deblock=1:0:0 analyse=0x3:0x113 me=hex subme=7 psy=1 psy_rd=1.00:0.00 mixed_ref=1 me_range=16 chroma_me=1 trellis=1 8x8dct=1 cqm=0 deadzone=21,11 fast_pskip=1 chroma_qp_offset=-2 threads=24 lookahead_threads=4 sliced_threads=0 nr=0 decimate=1 interlaced=0 bluray_compat=0 constrained_intra=0 bframes=3 b_pyramid=2 b_adapt=1 b_bias=0 direct=1 weightb=1 open_gop=0 weightp=2 keyint=250 keyint_min=25 scenecut=40 intra_refresh=0 rc_lookahead=40 rc=crf mbtree=1 crf=23.0 qcomp=0.60 qpmin=0 qpmax=69 qpstep=4 ip_ratio=1.40 aq=1:1.00
Output #0, mp4, to '/home/one01qsc/public_html/temp/1455-testing-mobidick.mp4':
  Metadata:
    major_brand     : qt
    minor_version   : 537199360
    compatible_brands: qt
    creation_time   : 2012-09-08 16:00:41
    encoder         : Lavf54.6.100
    Stream #0:0: Video: h264 (![0][0][0] / 0x0021), yuv420p, 1920x1080, q=-1--1, 30k tbn, 29.97 tbc
    Metadata:
      creation_time   : 2012-09-08 16:00:41
      handler_name    : Apple Alias Data Handler
    Stream #0:1: Audio: aac (@[0][0][0] / 0x0040), 22050 Hz, stereo, flt, 128 kb/s
    Metadata:
      creation_time   : 2012-09-08 16:00:41
      handler_name    : Apple Alias Data Handler
Stream mapping:
  Stream #0:0 -> #0:0 (h264 -> libx264)
  Stream #0:1 -> #0:1 (aac -> aac)
Press [q] to stop, [?] for help
frame=   18 fps=0.0 q=0.0 size=       0kB time=00:00:00.00 bitrate=   0.0kbits/s

在这种情况下，为 $status 打印的值是 137。

非常感谢任何帮助。

Answer 1

137 表示它收到了信号 9。因此，您必须在实时服务器上安装一个程序来检查单个进程可以消耗多少内存/CPU。如果超过该限制，它将被终止，这就是您的进程正在发生的事情。