avfilter/vf_idet: add a "half_life" option for statistics
This can be useful for videos in which the interlacing pattern changes.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
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This can be useful for videos in which the interlacing pattern changes.
Signed-off-by: Michael Niedermayer <michaelni@gmx.at>