原来是x264需要libav库啊。

root@Ubuntu32:/home/zhangbin/ffmpeg/ffmpegx86/ffmpeg-1.2# apt-get remove x264 libx264-devReading package lists... Done   原来是x264需要libav库啊。
Building dependency tree       
Reading state information... Done
The following packages were automatically installed and are no longer required:
  libswscale2 libavutil51libx264-120libavformat53 libschroedinger-1.0-0
  libvpx1 libavcodec53 libffms2-2
Use 'apt-get autoremove' to remove them.
The following packages will be REMOVED:
  libx264-dev x264
0 upgraded, 0 newly installed, 2 to remove and 0 not upgraded.
After this operation, 2,213 kB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 206658 files and directories currently installed.)
Removing libx264-dev ...
Removing x264 ...
Processing triggers for man-db ...

root@Ubuntu32:/home/zhangbin/ffmpeg/ffmpegx86/ffmpeg-1.2# 

av库卸载掉了，那些extra的怎么没见到卸载呢？？？

root@Ubuntu32:/home/zhangbin/ffmpeg/ffmpegx86/ffmpeg-1.2# apt-get autoremove
Reading package lists... Done
Building dependency tree       
Reading state information... Done
The following packages will be REMOVED:
  libavcodec53 libavformat53 libavutil51 libffms2-2 libschroedinger-1.0-0
  libswscale2 libvpx1 libx264-120
0 upgraded, 0 newly installed, 8 to remove and 0 not upgraded.
After this operation, 22.1 MB disk space will be freed.
Do you want to continue [Y/n]? y
(Reading database ... 206639 files and directories currently installed.)
Removing libffms2-2 ...
Removing libavformat53 ...
Removing libavcodec53 ...
Removing libswscale2 ...
Removing libavutil51 ...
Removing libschroedinger-1.0-0 ...
Removing libvpx1 ...
Removing libx264-120 ...
Processing triggers for libc-bin ...
ldconfig deferred processing now taking place
root@Ubuntu32:/home/zhangbin/ffmpeg/ffmpegx86/ffmpeg-1.2# 

原来是他们没被安装啊。。

root@Ubuntu32:/home/zhangbin/ffmpeg/ffmpegx86/ffmpeg-1.2# apt-get remove libavformat-extra-53
Reading package lists... Done
Building dependency tree       
Reading state information... Done
Package libavformat-extra-53 is not installed, so not removed
0 upgraded, 0 newly installed, 0 to remove and 0 not upgraded.
root@Ubuntu32:/home/zhangbin/ffmpeg/ffmpegx86/ffmpeg-1.2#