Is not necessary to be Einstein to understand that you can not deliver "899 + 0.1" frames.
Is not necessary to be Einstein to understand that a 900 frames NTSC clip is longer than 30 secs.
[Doug Beal] "There is no real world measure for milliseconds in video it's frames whether the frame rate is fractional as it is in Japan/North America and MPAL Brazil or integer frame rate for you PAL folks."
This is absolutely wrong.
Video timing is measured not in milliseconds but in NANOSECONDS.
If you would have learnt NTSC on the school, the first you would have learnt, is the duration of a TV line in NANOSECONDS (64 nanoseconds inPAL. Is burned on my brain).
TC was introduced in video tapes 40 years after those specs were sets and when we are broadcasting there is not any TC involved.
Your maths (NTSC 30fps) are OK when you are buying or selling programs, out of that scenario, you are dead.
I understand that you don't work in Broadcast, if so, you would be highly concerned for what happens with
"that stray milliseconds at the end of the TV day".
NTSC is 29,97 fps, even if this is too complicate to understand for the marketing guys.
rafael
http://www.nagavideo.com
