我在执行命令时遇到错误
ffmpeg -i /path/to/video.mp4:
ffmpeg version git-2012-07-24-93342de Copyright (c) 2000-2012 the FFmpeg developers
built on Jul 24 2012 23:55:41 with gcc 4.4.3 (Ubuntu 4.4.3-4ubuntu5.1)
configuration: --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libx264 --enable-gpl --enable-nonfree --enable-postproc --enable-swscale --enable-vdpau --enable-version3 --enable-libtheora --enable-libvorbis --enable-libvpx --enable-x11grab
libavutil 51. 65.100 / 51. 65.100
libavcodec 54. 44.100 / 54. 44.100
libavformat 54. 20.100 / 54. 20.100
libavdevice 54. 2.100 / 54. 2.100
libavfilter 3. 3.100 / 3. 3.100
libswscale 2. 1.100 / 2. 1.100
libswresample 0. 15.100 …