Displaying png file from external ftp server

I am trying the following configuration:

It is not diplaying the png file. Can you work with a ftp site like this or only with http(s)?

not sure about the standard HA, but I know that with the newer lovelace-ui you can only use https urls for the iframe if you use https for HA.
I would not be surprised if the same or similar applied to HA.
Have you tried the downloader component to get a local copy of the file?

Then you could point to that picture in your generic camera?

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Good idee.
Will try that.

In 0.74 there is a new push camera that you could look at.

Thanks, i am trying that out now.

Works very good. Downloading from ftp site with wget and uploading with curl on a separate vm with shell script and crontab.