Ubuntu Multimedia :: Getting Video Info With Ffmpeg / Mplayer?

I am trying to get a listing of video information using ffmpeg or mplayer. I have found a way BUT it is only returning 1 piece of info..

Here is what I'm doing in PHP:

print exec("/usr/local/bin/mplayer -identify file.flv -ao null -vo null -frames 0 2>/dev/null | grep ^ID_");

But this will not provide an entire listing, it will only print out 1 thing such as:

ID_AUDIO_CODEC=mp3

I can specify what exactly I want to know something like:

print exec("/usr/local/bin/mplayer -identify file.flv -ao null -vo null -frames 0 2>/dev/null | grep ^ID_VIDEO_WIDTH");

but I want to just have all the info available at once instead of having to loop through like 20 times..