Hi, Piotr,
edit: its done. 2nd attachment added. thanks.
thank you for the fast response i've been in the chroma key example but not on the other one.
in my case its a video and i think its a waste, on my case, to have half a video, static, with same settings all through the video but i can accomplish that with ffmpeg, yes
check the attachment please
i'd like "only" to add a jpg/png to mask everything out with some soft transition on the right/top/bottom and some hard on the tower... like.. starting with a screenshot and paint everthiyng out (or in, depending on the mask)
if mask stored in the file itself is the only way then i'll script it with ffmpeg
according to
https://krpano.com/docu/xml/#hotspot.alphachannel
unless i misunderstood the "inline" it doesn't seem to be possible. i'll have to duplicate video width
thank you!