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Average or convolve successive frames with FFmpeg tmix
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What this guide covers
For editors who want a smoothing, ghosting or motion-blur look by blending neighbouring frames. You end with a filter setting to try, from equal-weight averages to signed weights for temporal convolution. Based on the FFmpeg manual and not run.
More about this guide
Guide ID: art_01M6VP77FGJB2B8TW6N3KQT5CG
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Guide title
Average or convolve successive frames with FFmpeg tmix
Coverage
For editors who want a smoothing, ghosting or motion-blur look by blending neighbouring frames. You end with a filter setting to try, from equal-weight averages to signed weights for temporal convolution. Based on the FFmpeg manual and not run.
Example
A hypothetical 30 fps clip with a spinning wheel and a 7-frame average spanning about 0.23 seconds; the time span is arithmetic and the look was not observed.
Useful starting points
- Too much ghosting means too many frames are mixed; reduce frames and weights together.
- Quote the space-separated weights list or the option fails to parse.
- Leave scale automatic unless you know why: it follows the sum of the weights, so setting it by hand changes overall brightness.
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