[FFmpeg-user] Start and stop video overlay

Thomas Seilund tps at netmaster.dk
Wed Apr 22 15:29:25 CEST 2015

On 22-04-2015 15:15, Maxim Kozlov wrote:
> Hi!
> Check this thread
> http://comments.gmane.org/gmane.comp.video.ffmpeg.user/55720
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Hi Maxim


Let’s say I have ffmpeg running with an overlay video filter.

Then I can use zmq to send a message to the overlay filter to change the 
x option. Setting x to a very large number effectively disables the 
overlay and setting x back to a value within my frame width brings back 
the overlay. Is that correct?

The overlay filter has two inputs. Is there any way I can change the 
input while the filter is running?


Thomas S

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