Very frequent images’ updates

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I have an image that is updated online every minute.

Is it possible to update the slide every minute, too?

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Raspberry Slideshow is focused on quick-to-set-up image and video slideshows for the Raspberry Pi microcomputer lineup.

It plays all media contained in a USB key, fetched from a network share, from a Web/FTP server, from a folder of your Dropbox account and loaded via scp as well.

The operating system can refresh the media list at fixed, given intervals, in order to slide images and videos according to any remote changement, but it’s more used for the addition or the deletion of a media file.

Here how to: https://www.binaryemotions.com/raspberry-slideshow-download/

For sliding one only server-side-frequently-updated image, I’d rather use Raspberry Digital Signage, which could display a remote URL with an embedded image. This resource could be reloaded by the client, or better client/server could use a WebSocket, long-polling or (oldish) Comet technology.

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