Blocks/artefacts – where do they come from?

[Jon Smitherton]

Ok. I suspect that it is indeed the camera.
You could try denoising the shot in After Effects (reduce grain), use Neatvideo or using the Foundrys Furnace in FCP:
https://www.thefoundry.co.uk/products/furnace/
can’t remember if the trial is demo with an ‘X’ through it or fully working.
You could try crushing the blacks to get rid of the graduation of the compression artifacts.
If the shot is slo-motion – instead of slo-moing in FCP you can get a smoother effect in Compressor using Optical Flow.

Good Luck!
Jon

[Martin Langenegger]

Thanks for the tips, Jon. I’ll try that (never thought of taking the clip into After Effects for denoising – allthough I know AE much better than FCP!).

Martin