where are you everybody ? no answers ??

Why does re-sizing a video window to full screen in OpenCV (installed on RPI ) slow down the camera footage.
the function used is: setWindowProperty("Image", CV_WND_PROP_FULLSCREEN, 1);
is there another way to do that?

IMG_2~1.jpg thanks everybody. i think the only one who must be ignored is me, i think i didn't clarify the problem correctly. please refer to the attached picture that will give you an idea about what i want to say. i wrote a program based on opencv and c++ to do some process on a video, after comp...

Thanks for your cooperation. According to your reply, it becomes clear that the RCA port and HDMI output cannot be used at the same time, thus the only option is to sacrifice the use of HDMI, and only use the RCA. However, the problem that needs to be solved in this case, that the processed video ca...

Thanks DougieLawson. I think i have been misunderstood, my question is not how to set RCA as an output to display raspberry window interface, but i need to know how to send just video frames " captured by a camera " to RCA port without losing control of the application seen on HDMI port. ex : I have...

Hello.
my question is how to make a script on "opencv or otherwise" to control the RCA output in the raspberry pi B+,
i need to send a video to the RCA output within an application that i made with qt and opencv, "my purpose is to send just a video " .
thanks in advance.

thanks Ghans.
i tried a lot of capture cards and you are right, one of all worked with me.
working in full screen mode is not what i am asking about,but it seems to be an interim solution.
thanks again.

hello everybody. i am working on a video processing project, my questions is if there is a possibility to show only processed video frames (without the entire application) through the RCA output in the raspberry pi ?
Thanks in advance.