#10714: FFmpeg 6.1 nlmeans_vulkan unwanted mosaic effect
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Reporter: ioctl | Type: defect
Status: new | Priority: normal
Component: | Version:
undetermined | unspecified
Keywords: | Blocked By:
Blocking: | Reproduced by developer: 0
Analyzed by developer: 0 |
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With nlmeans_vulkan image become is a slightly mosaic. Steps to reproduce:
magick \( xc:red xc:gold +append \) \( xc:gold xc:green +append
\) -append -filter point -interpolate mesh -define
distort:viewport=800x600 -distort Affine '.5,.5 .5,.5 1.5,1.5
799.5,599.5' gradient_mesh.jpg # Generate gradient image
ffmpeg -y -init_hw_device opencl:0.0 -i gradient_mesh.jpg
-filter_hw_device opencl0 -vf
format=yuv420p,hwupload,nlmeans_opencl=s=2.5:r=75,hwdownload,format=yuv420p
gradient_mesh-cl.jpg # Treated with the OpenCL image, looks good
ffmpeg -y -init_hw_device vulkan=vul -i gradient_mesh.jpg -vf
format=yuv420p,hwupload,nlmeans_vulkan=s=2.5:r=75,hwdownload,format=yuv420p
gradient_mesh-vulk.jpg # Treated with the Vulkan image, has mosaic
artefacts when looking closely.
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Ticket URL: <https://trac.ffmpeg.org/ticket/10714>
FFmpeg <https://ffmpeg.org>
FFmpeg issue tracker
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