On 06-03-2020 08:48 pm, Zedsquared wrote:
The situation is a static overhead camera video of a crowd, in the dark,
wearing flashing devices. I'd like to be able to produce a live video feed
whereby the flashes (which can be a specific colour that I control, they'll
probably be bright green in this case) are persisted for a while (or
permanently until the pipeline is restarted if that's easier).

The lagfun filter? See https://ffmpeg.org/ffmpeg-filters.html#lagfun

Gyan
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