[FFmpeg-user] dynamic image overlay

[Werner Robitza]

On Thu, Jan 22, 2015 at 10:28 PM, Mark Ambler
<mwambler-at-yahoo.com at ffmpeg.org> wrote:
>
> Hi All,Found this thread on the mailing list from back in 2012.  Was it ever implemented?  if yes... any command line samples out there?
>
> https://ffmpeg.org/pipermail/ffmpeg-user/2012-August/008703.html

It says,

> Is there currently any way to get it to overlay with an image where the image can be updated every so often, during the ffmpeg session?

I don't understand what exactly is wanted here. Can you please
describe that with a more specific example?