FFmpeg php metadata wrapper

Question

Hello everybody, I have two questions about FFmpeg 1. Does FFmpeg Output change with versions (ffmpeg -i) 2. If the output don't change, anyone know a good PHP/Python class that parse FFmpeg Output and get all metadata (Duration, Codec, Audio Biterate, Video Biterate, Width, Height...) 3. if the FFmpeg output change, anyone know a linux tool (cmd line) that get those metadatas without dependence of FFmpeg.

I know that the php-ffmpeg module exist, but it's so old and buggy (wrong duration for example..., can't get $movie->getAudioBitRate() working )

Thanks