在不输出配置信息的情况下运行ffmpeg？问题的回答

在不输出配置信息的情况下运行ffmpeg？

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我正在用<a href="http://docs.python.org/py3k/library/subprocess.html#subprocess.Popen" rel="noreferrer">^{<cd2>}</a>调用<a href="http://www.ffmpeg.org/" rel="noreferrer">^{<cd1>}</a>，并试图捕获<a href="http://docs.python.org/py3k/library/subprocess.html#subprocess.Popen.stderr" rel="noreferrer">^{<cd3>}</a>输出并将其写入<a href="http://docs.python.org/py3k/library/logging.html" rel="noreferrer">^{<cd4>}</a>。 <pre><code>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) </code></pre> <code>ffmpeg</code>生成许多配置信息，如下所示： <blockquote> FFmpeg version 0.6.2-4:0.6.2-1ubuntu1, Copyright (c) 2000-2010 the Libav developers built on Mar 22 2011 15:55:04 with gcc 4.5.2 configuration: --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 WARNING: library configuration mismatch libavutil 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 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 </blockquote> 在最终输出我想记录的内容之前： <blockquote> Seems stream 0 codec frame rate differs from container frame rate: 47.95 (66893/1395) -> 23.98 (66893/2790) At least one output file must be specified </blockquote> 有没有办法防止这种过度的产出？我应该换一种方式吗？

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在不输出配置信息的情况下运行ffmpeg？

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