这就是我使用的命令
ffmpeg -i full.wmv -sameq -ab 128 -s 640x480 full.flv
FFmpeg version SVN-r13582, Copyright (c) 2000-2008 Fabrice Bellard, et al.
configuration: --prefix=/usr --libdir=${prefix}/lib --shlibdir=${prefix}/lib --bindir=${prefix}/bin --incdir=${prefix}/include/ffmpeg --enable-shared --enable-libmp3lame --enable-gpl --enable-libfaad --mandir=${prefix}/share/man --enable-libvorbis --enable-pthreads --enable-libfaac --enable-libxvid --enable-postproc --enable-libamr-nb --enable-libamr-wb --enable-x11grab --enable-libgsm --enable-libx264 --enable-liba52 --enable-libtheora --extra-cflags=-Wall -g -fPIC -DPIC --cc=ccache cc --enable-swscale --enable-libdc1394 --enable-nonfree --disable-mmx --disable-stripping --enable-avfilter --enable-libdirac --disable-decoder=libdirac --enable-libschroedinger --disable-encoder=libschroedinger --disable-altivec --disable-armv5te --disable-armv6 --disable-vis
libavutil version: 49.7.0
libavcodec version: 51.58.0
libavformat version: 52.16.0
libavdevice version: 52.0.0
libavfilter version: 0.0.0
built on Oct 4 2010 18:36:29, gcc: 4.3.2
[wmv3 @ 0x6cbddaa79760]Reserved RES_SM=2 is forbidden
Seems stream 1 codec frame rate differs from container frame rate: 1000.00 (1000/1) -> 25.00 (25/1)
Input #0, asf, from 'full.wmv':
Duration: 00:31:59.95, start: 3.000000, bitrate: 1802 kb/s
Stream #0.0: Audio: wmav2, 48000 Hz, stereo, 192 kb/s
Stream #0.1: Video: wmv3, yuv420p, 448x352, 1600 kb/s, 25.00 tb(r)
WARNING: The bitrate parameter is set too low. It takes bits/s as argument, not kbits/s
Output #0, flv, to 'full.flv':
Stream #0.0: Video: flv, yuv420p, 640x480, q=2-31, 200 kb/s, 25.00 tb(c)
Stream #0.1: Audio: libmp3lame, 48000 Hz, stereo, 0 kb/s
Stream mapping:
Stream #0.1 -> #0.0
Stream #0.0 -> #0.1
[wmv3 @ 0x6cbddaa79760]Reserved RES_SM=2 is forbidden
Error while opening codec for input stream #0.1
不知道问题是什么，但是使用此命令成功转换了其他格式文件。 .wmv文件失败...这是一个Windows媒体文件，这个或我的命令的问题不是我想用于此的问题
请提出您的意见。 感谢
答案 0 :(得分：2)
听起来您可能正在使用加密的WMV文件。 FFMPEG不支持解码DRM加密的WMV文件。