Info on Media Information in VLC

[sem_rangers]

Hi

Am using VLC to playback a video a file and when I access following options:
Tools -- Media Information -- Statistics Tab.

I saw that there is a number information available.

Let me know what especially what does info in following sections means:
- Media Data Size
- Input Bitrate
- Demuxed Data Size
- Content Bitrate

Any inputs and references is appreciated.
Thanks in advance.