[FFmpeg-user] filter guidance needed: persisting one colour

[Gyan Doshi]

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