I know that from now on, Unbuntu only supports libav instead of ffmpeg. But as for ffmpeg-php, I am not aware of any similar tool.
So how developers are supposed to do? Is there any option beside compiling from source?
ffmpeg-php is quite old, in fact, as said on ffmpeg's website:
ffmpeg developers suggest to rather use ffmpeg directly with php exec function in cli or with php functions like exec and parse the result if needed.
Anyway, if one needs a simple api to process audios and videos or retrieve information from them, there's a new php api called PHP-FFMpeg
It's quite easy to use: