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Apply custom kernels with FFmpeg convolution
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What this guide covers
For editors who want a command-line sharpen, blur, edge detect or emboss on video. You end with the manual's kernels as a starting point for your own matrices. It follows the FFmpeg manual only and was not run, so no result was seen.
More about this guide
Guide ID: art_01M6W99WJDSC4W05YEPRN03DQR
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Guide title
Apply custom kernels with FFmpeg convolution
Coverage
For editors who want a command-line sharpen, blur, edge detect or emboss on video. You end with the manual's kernels as a starting point for your own matrices. It follows the FFmpeg manual only and was not run, so no result was seen.
Example
A hypothetical soft clip sharpened with the manual's kernel and compared against the blur kernel as a control; nothing was run.
Useful starting points
- Quote the whole matrix string on the command line, or the shell and filter parser will split it and give a parse error.
- Each matrix needs the right number of values for its mode: 9, 25 or 49 in square mode.
- If the picture goes too dark or bright, check the bias and rdiv values before changing the kernel.
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