File Prediciton for PAL Always Out by about 20 mb

Jellygoose · #1 01-25-2003, 06:32 AM

Hi all!

I don't know why, but my file size prediction for PAL is always out by 20 MB... I use sampler=24 , and the current formula:

Predicted MPEG size = (( Total frames/MovieTimeInMinutes) / 24 ) * MPEG sample file size

The final MPEG size is always smaller than predicted...

kwag · #2 01-25-2003, 06:40 AM

Quote:

Originally Posted by Jellygoose

Hi all!

I don't know why, but my file size prediction for PAL is always out by 20 MB... I use sampler=24 , and the current formula:

Predicted MPEG size = (( Total frames/MovieTimeInMinutes) / 24 ) * MPEG sample file size

The final MPEG size is always smaller than predicted...

That should be about right. Use the .98 factor, and that will bring it close to reality

-kwag

Kane · #3 02-16-2003, 08:43 AM

i have made the same experience as jellygoose

how must i calculate?

MPEG sample file size * 0.98 ?

Jellygoose · #4 02-16-2003, 05:30 PM

worked for me buddy

Kane · #5 02-17-2003, 06:30 AM

but that sounds not logical, if i reduce the size of the sample , the size of the whole video is also reduced, i think

Jellygoose · #6 02-17-2003, 06:54 AM

No, because the factor you divide by is actually reduced... see if you want to determine your sample size you do this : CD Size - Audio Size / ((TotalFrames/MovieTime/24)*0.9

get it ?

Kane · #7 02-17-2003, 07:06 AM

i understand, what you wrote, sound not logical, although

you got pm