rename FFMpeg plugin to AudioVideo
issue #203
update SconsProject to have libav library dependencies
clean code to correct compression using LibAV library
issue #203
AudioVideo: update unit tests to use LibAV plugin
issue #203
adding option in AudioVideo reader
issue #203
change some code to unify code for reader and writer
adding parameters in avreader plugin
adding comments on python code for documentation
issue #194
AudioVideo: adding output fps
issue #197
adding overwrite fps option to generate videos using LibAV
AudioVideo and host: adding float fps test
issue #124
Merge branch 'dev_switch_ffmpeg_to_libav' into develop