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
Hi! I have a DV stream that I'm trying to encode for DVD. I have an NTSC
DV camera, and it shoots in 3/1001. I can encode it perfectly well
into 3:1001 MPEG-2.
As an experiment, I wanted to make a 24000/1001 encoding (I didn't
really care about the output quality, I just was curious).
So, if I have 24000:1001 material and I want to encode for NTSC DVD, I
need to specify -F 4 -p (not -F 1 -p). This way, the encoded file has a
DVD-compliant frame rate (3:1001) with the proper MPEG flag telling
the decoder to do pulldown (to reconstruct the 24000:1001 video from the
