Messed up the frame rate and pulldown... CanonC100 + Ninja2

T

twrench

Member
We filmed with a Canon C100 and Atomos Ninja 2

We sent a 24p signal over HDMI, but embedded it into a 60i signal. The 24p signal has a pulldown added so that some fields are doubled and sorted in a way that it fits into a 60i signal. So it did a pulldown removal, but to change it into 29.97, which means it just stitched every two fields together--and no fields were lost.


What I a attempting to do is add the pulldown back to 60i, then remove the pulldown correctly to 24p. I have been told by Atomos that this is the way to fix the footage (getting rid of the artifacts).


Can be done in compressor, unfortunately, I don't have a defined workflow on how to do this. Does anyone know the work flow?

Thanks in advance.



 
Let me say from the outset -- that's a mess, and there may be no solution.

But you can try to output the footage as 60i file, and then run a reverse telecine on it. In theory, as long as the fields were blended together into frames with no interpolation and no blurring (as in, there are sharp comb artifacts visible), this MIGHT work. You may need to try it several times to find the correct A frame.

I have serious doubts it WILL work, though.
 
I've made the same mistake before, and had no problems by simply making a Compressor script setting frame rate at 23.98 and setting Frame Controls setting to Deinterlace>Reverse Telecine, no intermediate step. This is presuming your C100's footage is actually 23.98, as I don't believe it does true 24p as the C300 does.
 
You must log in or register to reply here.
Back
Top