运行ffmpeg而不输出配置信息？

Question

我调用ffmpeg同subprocess.Popen,并试图捕捉stderr输出并将它写入logging.

args = ['ffmpeg', '-i', path]
if start:
    args += ['-ss', start]
if end:
    args += ['-t', end]
args += [
    '-vcodec', 'copy',
    '-acodec', 'copy',
    '-scodec', 'copy',
    '-f', 'mpegts',
    '-y', '/dev/stdout']
self.child = subprocess.Popen(
    args,
    stdin=open(os.devnull, 'rb'),
    stdout=subprocess.PIPE,
    stderr=subprocess.PIPE)

ffmpeg 生成大量配置信息,如下所示:

FFmpeg版本0.6.2-4:0.6.2-1ubuntu1,版权所有(c)2000-2010 Libav开发人员于2011年3月22日15:55:04建立了gcc 4.5.2
配置: - extra-version = 4:0.6 .2-1ubuntu1 --prefix =/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libgsm --enable-libschroedinger --enable-libspeex --enable -libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-gpl --enable-postproc - -enable-swscale --enable-x11grab --enable-libdc1394 --enable-shared --disable-static警告:库配置不匹配libavutil配置: - extra-version = 4:0.6.2-1ubuntu2 --prefix =/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex - enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-libopenjpeg --enable-gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libfaad --enable-libdirac --enable-libfaad --enable-libmp3lame --enable-librtmp --enable-libx264 --enable-libxvid --enable-libdc1394 --enable-shared --disable-static libavcodec configuration: - extra-version = 4:0.6.2-1ubuntu2 --prefix =/usr --enable-avfilter --enable-avfilter-lavf --enable-vdpau --enable-bzlib --enable-libdirac --enable-libgsm --enable-libopenjpeg --enable-libschroedinger --enable-libspeex - -enable-libtheora --enable-libvorbis --enable-pthreads --enable-zlib --enable-libvpx --disable-stripping --enable-runtime-cpudetect --enable-vaapi --enable-libopenjpeg --enable- gpl --enable-postproc --enable-swscale --enable-x11grab --enable-libfaad --enable-libdirac --enable-libfaad --enable-libmp3lame --enable-librtmp --enable-libx264 --enable- libxvid --enable-libdc1394 --enable-shared --disable-static libavutil 50.15.1/50.15.1
libavcodec 52.72.2/52.72.2
libavformat 52.64.2/52.64.2
libavdevice 52. 2. 0/52. 2. 0
libavfilter 1.19.0/1.19.0
libswscale 0.11.0/0.11.0
libpostproc 51. 2. 0/51. 2. 0

在最终输出我要记录的东西之前:

似乎流0编解码器帧速率与容器帧速率不同:47.95(66893/1395) - > 23.98(66893/2790)必须至少指定一个输出文件

有没有选择来防止这种过度输出？我应该采用不同的方式吗？

Answer 1

现在可以使用带有-hide_banner选项的FFmpeg 2.2 .另请参阅相关提交和票证.