Range of file sizes

letter
19 KB to 79KB

PDF file
12 KB to 70 KB

picture
20 KB to 1.7 MB

audio file
20 KB to 3 MB

Excel spread sheet



Power Point slide show


Digital movie
1 hour of SD (4:1:1) digitial video is 13 GB
1 hour of HD (4:2:2) digital video is 25 GB
1 hour of HD (4:4:4) digital video is 125 GB

NOTE: there are different levels of compression.

You can compress an hour of digital video to less than 13 GB but you loss a lot of quality.

For example: SD (4:1:1) video compressed to MPEG2 format is 13 GB,
compressed to a DVD its 4. GB.

Uncompressed its 88 GB.