WMV 512Kbps (File size 146kb)
A 90 min film would = 394Mb
Resolution: 320 x 240 (small)
Frame Rate: 30fps
Total Bitrate: 1057kbps
Audio: 33kbs (Stereo) 44Khz
About WMV files

Quicktime Movie (1Mbps) (File size 283kb)
A 90 min film would = 764 Mb
Resolution: 320 x 240 (small)
Frame Rate: 15fps
Total Bitrate: 1540kbps
Audio: 33kbs (Stereo) 48Khz
About quicktime movie files

MP4 (File size 283Kb)
A 90 min film would = 764 Mb
Resolution: 720 x 576
Frame Rate: 50fps
Total Bitrate: 1152kbps
Audio: 142kbs (Stereo) 44Khz
About MP4

Quicktime Movie (3Mbps) (File size 861kb)
A 90 min film would = 2.32Gb
Resolution: 4:3
Frame Rate: U/k
Total Bitrate: 3906kbps
Audio: 442kbs (Stereo) uncompressed
About quicktime movie files

WMV 3Mbps (File size 943kb)
A 90 min film would = 2.53Gb
Resolution: 640 x 480 (NTSC DVD Resolution)
Frame Rate: 30fps
Total Bitrate: 3145kbps
Audio: 96kbps (Stereo) 44Khz
About WMV files

WMV 8Mbps (File size 1.78Mb)
A 90 min film would = 4.81Gb
Resolution: 1440 x 1080
Frame Rate: 25fps
Total Bitrate: 2826kbps
Audio: 33kbps (Stereo) 44Khz

MPEG2 NTSC (File size 2.01Mb)
A 90 min film would = 5.86Gb
Resolution: 720 x 480 (NTSC DVD Resolution)
Frame Rate: 29fps
Total Bitrate: 9724kbps
Audio: 224kbps (Stereo) 48Khz
About WMV files

MPEG2 PAL (File size 2.24Mb)
A 90 min film would = 6.04Gb
Resolution: 720 x 576 (PAL DVD Resolution)
Frame Rate: 25fps
Total Bitrate: 9724kbps
Audio: 224kbps (Stereo) 48Khz

AVI (File size 8.25Mb)
A 90 min film would = 22.27Gb (huge)
Resolution: 720 x 576 (PAL DVD Resolution)
Frame Rate: 25fps
Total Bitrate: 30336kbps
Audio: 1536kbps (Stereo) 48Khz
About AVI files

WMV 512Kbps (File size 450Kb)
A 90 min film = 405Mb
Resolution: 320 x 240 (small)
Frame Rate: 25fps
Total Bitrate: 399kbps
Audio: 46kbs (Stereo) 44Khz
About WMV files

MP4 (File size 643Kb)
A 90 min film = 579Mb
Resolution: 720 x 576 (PAL DVD Resolution)
Frame Rate: 50fps
Total Bitrate: 872kbps
Audio: 127kbs (Stereo) 44Khz
About MP4

MP4 (File size 650Kb)
A 90 min film = 585Mb
Resolution: 640x 480 (NTSC DVD Resolution)
Frame Rate: 59fps
Total Bitrate: 879kbps
Audio: 128kbs (Stereo) 44Khz
This is virtually the same as the above but has been converted to NTSC standard ratio)

Quicktime Movie (3Mbps) (File size 2.15Mb)
A 90 min film would = 1.98Gb
Resolution: 720 x 576 (PAL DVD Resolution)
Frame Rate: 24fps
Total Bitrate: 3906kbps
Audio: 387kbs (Stereo)
About quicktime movie files

Quicktime Movie (3Mbps) (File size 2.15Mb)
A 90 min film would = 1.98Gb
Resolution: 640 x 480 (NTSC DVD Resolution)
Frame Rate: 29fps
Total Bitrate: 3351kbps
Audio: 393kbs (Stereo)
This quicktime file is virtually the same as the one before but has been converted to NTSC standard ratio)

WMV 3Mb (File size 2.32mb)
A 90 min film would = 2.08Gb
Resolution: 640 x 480
Frame Rate: 30fps
Total Bitrate: 3145kbps
Audio: 96kbs (Stereo) 44Khz

WMV 5Mb (File size 3.38mb)
A 90 min film would = 3.05Gb
Resolution: 1280 x 720 (large screen)
Frame Rate: 25fps
Total Bitrate: 3259kbps
Audio: 46kbs (Stereo) 44Khz

WMV 8Mb (File size 5.52mb)
A 90 min film would = 4.96Gb
Resolution: 1440 x 1080 (large screen)
Frame Rate: 25fps
Total Bitrate: 5357kbps
Audio: 46kbs (Stereo) 44Khz

M2t (File size 20.17mb) (Blue Ray File format)
A 90 min film would = 18.15Gb
Resolution: 1440 x 1080 (large screen)
Frame Rate: 25fps
Total Bitrate: 25384kbps
Audio: 384kbs (Stereo) 48Khz
About m2t files

Bitrate

Bitrate, as the name implies, describes the rate at which bits are transferred from one location to another. In other words, it measures how much data is transmitted in a given amount of time. Bitrate is commonly measured in bits per second (bps), kilobits per second (Kbps), or megabits per second (Mbps). For example, a DSL connection may be able to download data at 768 kbps, while a Firewire 800 connection can transfer data up to 800 Mbps.

Bitrate can also describe the quality of an audio or video file. For example, an MP3 audio file that is compressed at 192 Kbps will have a greater dynamic range and may sound slightly more clear than the same audio file compressed at 128 Kbps. This is because more bits are used to represent the audio data for each second of playback. Similarly, a video file that is compressed at 3000 Kbps will look better than the same file compressed at 1000 Kbps. Just like the quality of an image is measured in resolution, the quality of an audio or video file is measured by the bitrate.

Resolution

This term can describe either how many pixels a monitor can display or how fine a printer can print.
A small monitor may have a resolution or 640 x 480, which means there are 640 pixels horizontally across the screen and 480 pixels vertically. Some other common monitor resolutions are 800 x 600, 1,024 x 768, and 1,280 x 1,024.
The higher the resolution, the more that can be displayed on the screen.

HERE IS A USEFUL ARTICLE ON BITRATES