DVD

It takes about 2 gigabytes to store one hour of average video. The amount of video a DVD can hold depends on the type of audio/video compression, and the number of associated audio tracks, menu complexity, and additional material.
A DVD-5, DVD-R, DVD+R can hold up to 120 min. with standard bit-rate and a 48kHz audio stream.
A DVD-9 (dual layer) holds about 4 hours
A DVD-18 (dual layer, double side) about 8 hours.

AVID
1 hour of footage takes:
approx. 74 gigs uncompressed or 600kb per frame with 2 audiochannels
approx. 32 gigs on avr 77 or 2:1 or 300kb per frame with 2 audiochannels
approx. 8 gigs on avr 70 or 10:1 or 100kb per frame with 2 audiochannels
approx. 2 gigs on avr 3s or 15:1s or 19kb per frame with 2 audio channels
click here to download Word document with more AVID resolutions and space requirements.

Final Cut Pro
1 hour of footage takes approx. 13 gigs at 1:5 DV compression or 120kb per frame with 2 audiochannels.
1 hour of footage takes approx. 1.3 gigs compressed 320x240 PhotoJPEG or 12kb per frame with 2 audiochannels (version 3 & up)

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