https://bugs.kde.org/show_bug.cgi?id=430193

--- Comment #3 from Jason Straight <j.straight-...@straights.net> ---
(In reply to Vincent PINON from comment #2)
> There is a misunderstanding: real_time is for *processing* threads (MLT
> calculating frames/slices in parallel) while encodethreads is for *encoding*
> (typically libx264 or libvpx compressing the calculated video).
> 
> Increasing encodethreads works, but beyond 4 it doesn't speed up much.
> But MLT parallel processing doesn't always work well (with several frei0r
> effects/transitions).
> 
> It is difficult to find a balance filling the cores for render, as either
> processing or encoding can be bottleneck depending on video
> characteristics...
> 
> For previews, the codec used doesn't use frame-to-frame compression (MJPEG,
> DNxHD...), so encoding almost does not come into equation.

Yeah. I should have elaborated. I'm using GPU for encoding. Nvenc.

Increasing the processing threads from 4 to 12 really sped up my render times
for final rendering and timeline preview.

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