代码： 全选
ffmpeg -i 970321.wmv -s 320x240 -author Myself -copyright free -comment face -vcodec xvid -r 25 -b 800 -acodec aac -ac 2 -ar 40000 -ab 64 -vol 250 -f mp4 text.mp4 代码： 全选
FFmpeg version SVN-rUNKNOWN, Copyright (c) 2000-2007 Fabrice Bellard, et al.
configuration: --enable-gpl --enable-pp --enable-swscaler --enable-pthreads --enable-libvorbis --enable-libtheora --enable-libogg --enable-libgsm --enable-dc1394 --disable-debug --enable-shared --prefix=/usr
libavutil version: 1d.49.3.0
libavcodec version: 1d.51.38.0
libavformat version: 1d.51.10.0
built on Mar 16 2009 21:16:26, gcc: 4.2.4 (Ubuntu 4.2.4-1ubuntu3)
Seems stream 1 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 29.97 (30000/1001)
Input #0, asf, from '970321.wmv':
Duration: 00:32:40.1, start: 3.065000, bitrate: 333 kb/s
Stream #0.0: Audio: wmav2, 44100 Hz, stereo, 48 kb/s
Stream #0.1: Video: vc1, yuv420p, 640x480, 29.97 fps(r)
Unknown codec 'xvid'