./configureERROR: libx264 not foundIf you think configure made a mistake, make sure you are using the latestversion from Git.  If the latest version fails, report the problem to theffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.Include the log file "ffbuild/config.log" produced by configure as this will helpsolve the problem.

解决办法:

sudo apt-get install libx264-dev