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I'm trying to capture video from raspberry pi camera using OpenCV and display it without using gtk or x11. I noticed that raspivid displays camera output without using any window, I wonder if it's possible to use the same method to make opencv display video without using gtk.

Edit: I'm using raspbian lite without any desktop environment or GUI services, it's just a tty environment. I don't want to use any of their lightweight counterparts. How can I create a frame to display a picture/video on a tty environment and also use that approach to make OpenCV use it instead of regular windows generated by namedWindow() function?

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    Now the question is clear, but it seems that what you ask for requires some serious coding, and I wouldn't expect people to write code for you. Sep 3, 2019 at 8:11
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    So the linux framebuffer is one way to do this; it is accessed via a special device node and an iotctl() based C API. However, glancing at the raspicam/raspivid source I think it uses the VideoCore libraries distributed with the pi: raspberrypi.stackexchange.com/questions/tagged/mmal
    – goldilocks
    Sep 3, 2019 at 13:37
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    @goldilocks Thanks for your great explanations! A lot of helpful info in 4 lines. Actually the way raspistill uses VideoCore libraries might help me to get to the answer. Instead of creating a window using OpenCV I might be able to feed image data to the mmal component, preview, in order to display image. I will dig in more, you might want to write the answer so that I can approve it. Sep 10, 2019 at 9:13

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Instead of playing video on command line you can use scp and download recorded video from raspberry pi to your system then you can enjoy your video.

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    What is sap protocol? The question you answered wasn't asked.
    – Ingo
    Sep 3, 2019 at 17:54
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  • Well, it's been a while since I posted this. The answer you gave is not particularly the answer to my question, I'm aware of SSH protocol and I know how to use it but what I want is not to watch a video in any possible way, but in a particular way which is through a TTY. As you might guessed, TTY is an environment where user interface does not exist. So the question is: how can a video, which is inherently visual and only available through user interfaces, can be played on a TTY? Aug 1, 2022 at 12:18

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