Created
May 2, 2014 17:45
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FFmpeg: Blur video
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| ffmpeg -i intro.mov -vf "boxblur=5:1" intro-blur.mov |
@hraban thank you very much
- default values:
-vf boxblur===-vf boxblur=luma_radius=2:luma_power=2. - blur just a part of the frame:
-vf boxblur=w=20:h=20:x=400:y=200. - blur just for a few seconds of the video's timeline (example: 00:00:03-00:10:00)
-vf boxblur=enable='between(t,3,10*60)'. - combine those freely, order is not important (
:to separate arguments,=to specify value). - f.y.i,
enableis available for any filter! (when it makes sense, not much forcrop, for example..).
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@hieuseesaa as far as I understand https://ffmpeg.org/ffmpeg-filters.html#boxblur and from tinkering with it: the 5 is the pixel radius of the (gaussian?) blur effect, while the 1 is the amount of consecutive frames to apply the blur to. increasing the 5 will make it blurrier. Increasing the 1 will make it choppier (not "smoothed out", as you might expect from e.g. a moving average).