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Old 6th October 2017, 19:40   #5620  |  Link
benwaggoner
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Join Date: Jan 2006
Location: Portland, OR
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Quote:
Originally Posted by birdie View Post
sao is enabled by default, the two other options are not meant for removing noise or smoothing backgrounds because they will as well smooth everything else. If one wants to remove noise, use avisynth filters for that.
--nr-inter works sort of like an adaptive deadzone for predicted blocks. It absolutely will reduce random noise with a high spatial and temporal frequency, and will help stabalize the background of noisy sources. This can also yield significant bitrate reduction since encoding all those high frequency residuals every frame is expensive.

Of course it can also lose detail in moving areas as well.
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