Posted by Barry Graham on 03/26/07 12:50

<aniramca@yahoo.com> wrote in message
news:1174912312.938070.306040@n59g2000hsh.googlegroups.com...
> On Mar 26, 1:47 am, "Barry Graham" <btgra...@tpg.com.au> wrote:
> However, how come does the instruction in an avi file end up being so
> large... example a 5 minutes video ends up to about 60 MB file? One
> can always argue that the instruction in avi is much more complex than
> midi, therefore larger file. Why is there so much larger file?
> Basically going back to midi... if midi can created a 15 min
> instruction to piano music in 70 kB, why "instruction" of avi files
> almost 1000 times more? Just curious
>

Because the avi file contains the IMAGES that make up the movie.
Each frame of the movie is a picture that must be stored in the file.

The MIDI file only contains the INSTRUCTIONS.
The sounds are "stored" or created in the sound device.

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