Denoising video with ffmpeg

[ricardouk]

Hi everyone

About 16 months ago i stopped using windows and started to use Linux (Mint Cinnamon), i had been trying linux distros for years and was waiting for the right time/OS/software to make the switch, so far the experience has been excelent, but there's always a but...i have a big colection of videos (drone) and when the lighting wasnt enough it "pumped up the iso" adding grain/noise to the video.

Previously i asked in the forum for help on how to remove the grain:
https://forum.videohelp.com/threads/383283-Help-on-cleaning-up-drone-video

and avisynth and its plugins were the answer, but on linux there's no avisynth and using wine or something similar brings more problems to the "table", ive tried using the denoise filters (nlmeans, atadenoise, hqdn3d, vage denoiser etc) using their default filter values, searched online for some personnalized settings instead of the default ones but cant get the same results i would get with avisynth/topaz denoise on windows.

Can anyone help me finding some filter in ffmpeg/handbrake that can remove some of the noise/grain? Im using the free version of resolve that has limited noise removal and since it doesnt accept mp4 as source i have to transcode to something like prores before using it in Resolve.

Ive uploaded a 1 min video recorded after a wildfire and 2 versions converted with topaz (denoised and sharpened took 7 min) (just high quality denoise took 37 min), i dont expect ffmpeg/handbrake can give the same results as topaz but i would be happy if it removed most of it and then i could edit it further in Resolve.

So far trying the filters i mentioned before only kind of smooths out the video when converting with x264/x265, i think its one the side "effects" of those codecs but resolve doesnt accept them, when modifyng the scripts to prores the grain doesnt dissapear.

Thanks

[babiulep]

For linux:
AviSynthPlus: https://github.com/AviSynth/AviSynthPlus.git
and/or
vapoursynth: https://github.com/vapoursynth/vapoursynth

[ricardouk]

Hi babiulep.

Thanks for the suggestion, ive encountered those links but i didnt look at vapoursynth, i googled the avisynth+ on linux before switching to linux and most results showed/had compatibilty problems, i would prefer to stay away from avisynth and its meriad of plugins and all of its problems, i had time/patience 20 years ago, nowadays i dont, work and life takes care of that, going that route would take away the "fun" out of video editing for me and stay away from it, if possible i would prefer a ffmpeg/simple script that i could use but so far they werent effective.

Tried avidemux and its noise reduction filters median/mean were but made the video "pasty", shutter encoder and handbrake filters kind of the same, was hoping for suggestions with ffmpeg or perhaps other programs, tried Hybrid but the filters section dont show up on linux.

Thanks

[Sharc]

In an ffmpeg commandline you can for example call the hqdn3d filter, like

....  -vf "hqdn3d=4.0:3.0:6.0:4.5" .....

https://ffmpeg.org/ffmpeg-filters.html#hqdn3d

https://trac.ffmpeg.org/wiki/DenoiseExamples

[pandy]

If you have relatively new HW then you can try to use https://ffmpeg.org/ffmpeg-filters.html#toc-nlmeans_005fopencl-1 or https://ffmpeg.org/ffmpeg-filters.html#toc-nlmeans_005fvulkan