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I am very new to dealing with video, so apologies if this is a completely inane question: I was wondering if you could advise me on how to transcode 10bit H.265 All-I 4k footage into some other 10bit format for the purposes of colour grading in Davinci Resolve? I am using the free edition of the software, which does not support H.265. H.265 is also exceedingly tough on my CPU, which I didn't think about when buying a 4k video camera!

I am on Windows. It looks like it would need to be some variant of DNxHR, but I get completely(!) lost trying to construct the terminal commands to make the conversion.

Here is a very short video in the format that I need to transcode from:

drive.google.com/file/d/1MLaXKDzwaZvbVBp2rlyf7SfxReVbcxID/view

I'd be really grateful if you could help me out with this!

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I'm not familiar with DaVinci Resolve, but if the free version supports 10-bit H.264 you can use HandBrake to transcode to that format with CRF 0 and see if that works.

If that doesn't work you'll need to use FFmpeg. With a bit of fiddling I was able to convert your source file to DNxHR using this command:

ffmpeg -i DSCF1265.MOV -c:v dnxhd -profile:v dnxhr_hqx -color_range 2 -c:a copy DSCF1265.dnxhr_hqx.mov

This also copies the audio over, if you want to exclude it for some reason use -an instead of -c:a copy.

The -color_range 2 bit is important, without it the output looked different from the input (at least when watched with mpv).

  • Thank you so much, that seems to have worked perfectly. I really appreciate your help! Apologies for the late reply; I was expecting email notifications! – Rory Ede Oct 23 '18 at 13:13
  • Hi veikk, sorry to ask you this but I was wondering what the equivalent command might be for HD footage? – Rory Ede Oct 29 '18 at 13:29
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Sorry, just missed out on free version of resolve..

For conversion you gotta use ffmpeg. I'm afraid that's the only solution I can think of right now.

CONVERT H. 265 encoding 4:2:2 in 10-bit with libx264

If your system cannot handle it, try using a proxy workflow or the optimized media. It converts the file internally.. Check out this tutorial for furthermore

  • OP is using the free version of Resolve which doesn't import HEVC – Gyan Oct 22 '18 at 9:00

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