On 14/12/2005, at 4:21 PM, Trent Piepho wrote:
When you use -F 4 -p, the mpeg file has its framerate set to 30
fps, but there
are only 24 frames encoded per second. The encoder puts in repeat
field flags
that tell the decoder to do the pulldown, which has the effect of
converting 24
The easy way to understand all this is that the -F flag specifies
the rate at which the decoder outputs *decoded images* for display.
This is not always the same as the rate at which encode images arrive and are
decoded because of the 3:2 pulldown to display 24Hz Movie material for
display on
