error: swscale headers not found! Install FFmpeg or Libav

I want to compile OpenMCU.ru on my Ubuntu box, when I run ./configure command, following error appears:

checking for swscale.h... no
checking for libswscale/swscale.h... no
checking for ffmpeg/swscale.h... no
checking for libav/swscale.h... no
checking for ffmpeg/libswscale/swscale.h... no
checking for libav/libswscale/swscale.h... no
configure: error: swscale headers not found! Install FFmpeg or Libav.

Any solution?

Install libswscale-dev package:

apt-get install libswscale-dev