Tips: Remove codec artifacts

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Remove Compression Artifacts

Compression artifacts are those blocks and fringes in your video due to video compression. It is especially obvious with highly compressed video. Even high quality video such as DVD and miniDV, you may still see them when you zoom up or sharpen the video.

Topaz Enhance has a filter, Remove Compression Artifacts, to suppress those artifacts. Here are some tips:

For MJPEG, DV, MPEG Video
  • Use filter Remove Compression Artifacts, which is specifically designed to remove blocks and fringes in video compressed by block-based codec.
  • Always apply filter Remove Compression Artifacts before any other processing.
  • Be careful not set the suppressive too high. You can always use Denoise & Enhance* to further remove noise and artifacts later, but if details are suppressed at this stage, it is impossible to recover them later on.
  • For interlaced video, always use frame mode processing! That is, turn off the field separation and check
    • “Interlaced” parameter. See Appendix for details.
  • Filter Denoise & Enhance* can further reduce the artifacts and recover some details. This filter could be especially useful for poor quality video where high compression is used. (Don’t forget to pre-compose, since there is a suffix “*” there.


For Motion JPEG2000
  • Use filter Denoise & Enhance*. Do not use the filter Remove Compression Artifacts since it can only work for block-based compression. Motion JPEG2000 is a wavelet compression codec.
  • Try filter Denoise & Enhance* instead.






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