unsharp_opencl

Sharpen or blur the input video.

It accepts the following parameters:

'luma_msize_x, lx'

Set the luma matrix horizontal size. Range is [1, 23] and default value is 5.

'luma_msize_y, ly'

Set the luma matrix vertical size. Range is [1, 23] and default value is 5.

'luma_amount, la'

Set the luma effect strength. Range is [-10, 10] and default value is 1.0.

Negative values will blur the input video, while positive values will sharpen it, a value of zero will disable the effect.

'chroma_msize_x, cx'

Set the chroma matrix horizontal size. Range is [1, 23] and default value is 5.

'chroma_msize_y, cy'

Set the chroma matrix vertical size. Range is [1, 23] and default value is 5.

'chroma_amount, ca'

Set the chroma effect strength. Range is [-10, 10] and default value is 0.0.

Negative values will blur the input video, while positive values will sharpen it, a value of zero will disable the effect.

All parameters are optional and default to the equivalent of the string '5:5:1.0:5:5:0.0'.

Command line examples

• Apply strong luma sharpen effect:

  -i INPUT -vf "hwupload, unsharp_opencl=luma_msize_x=7:luma_msize_y=7:luma_amount=2.5, hwdownload" OUTPUT
  

• Apply a strong blur of both luma and chroma parameters:

  -i INPUT -vf "hwupload, unsharp_opencl=7:7:-2:7:7:-2, hwdownload" OUTPUT
  

Video Sources

Below is a description of the currently available video sources.