If you may get an error while install/configure ffmpeg packages
# ./configure
yasm/nasm not found or too old. Use --disable-yasm for a crippled build.
If you think configure made a mistake, make sure you are using the latest
version from Git. If the latest version fails, report the problem to the
ffmpeg-user@ffmpeg.org mailing list or IRC #ffmpeg on irc.freenode.net.
Include the log file "config.log" produced by configure as this will help
solve the problem.
You need to install yasm on your system by yum command,
#yum install yasm
Thanks! Work in my Elementary OS, I just have some adaptations in comand line, like this: $sudo apt-get install yasm
Thank you matt porto, yes, sudo apt-get install yasm command for Ubuntu related operating system.
Dont work for me, on centos 7, no changes, same problem with ffmpeg 3.0