Thx Firas Abd Alrahman for your reply.
For preserve client bandwitch, i want to reduce number of video stream receive.
For moment, i receive between 15 and 20 video stream on 1 client but only 5 video tag are show (limit of application resolution / size of video stream).
I want to detect the hidden video tag on the page and stop reception of stream. If user scroll for show other video tag, i will resume reception of stream.
One possibility is to destroy handle (for hidden video tag) and re-create handle when video tag is scrolled (with certainly few lags).