Hi All
I have been trying to convert an image sequence (16 bit tiff) to DNXHD 444. It 
can be done with Quicktime pro on Windows but I have completely failed with 
ffmpeg.

ffmpeg -r 23.976 -i C:\Users\Matt\Desktop\Newfolder\104_0020gn_01_X1_0%3d.tif 
-c:v dnxhd -profile:v 3  -s 1920x1080 -r 23.976  -y 
C:\Users\Matt\Desktop\Newfolder\bt.mov

ffmpeg –h encode=dnxhd gives the following:

General capabilities: threads
    Threading capabilities: frame and slice
    Supported pixel formats: yuv422p yuv422p10le yuv444p10le gbrp10le
dnxhd AVOptions:
  -nitris_compat     <boolean>    E..V.... encode with Avid Nitris 
compatibility (default false)
  -ibias             <int>        E..V.... intra quant bias (from INT_MIN to 
INT_MAX) (default 0)
  -profile           <int>        E..V.... (from 0 to 5) (default dnxhd)
     dnxhd                        E..V....
     dnxhr_444                    E..V....
     dnxhr_hqx                    E..V....
     dnxhr_hq                     E..V....
     dnxhr_sq                     E..V....
     dnxhr_lb                     E..V....

So I am unsure how to achieve a pixel format of yuv444p10le 

I have been at this for days so if anyone can help I would be very grateful. I 
wonder if it is a bit rate setting but I can’t see what bit rate to use with 
the framerate and pixel format.

I hope this question makes sense

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