I am learning opencv from the youtube and I just created the very basic program in python

        import cv2 as cv


        sources=cv.VideoCapture("test.mp4");

        if(not sources.isOpened()):
            print("Failed to open video file");
        else:
            print("video file opened successfully");

        win_name="test"
        cv.namedWindow(win_name);

        has_input,frame= sources.read();
        if(has_input):en 
            cv.imshow(win_name,frame[...,::-1])
            cv.waitKey(0)
        sources.release();

But when i run the programm i have following errors, i have tried googling it but i didn’t find any working solution

[av1 @ 0x55e6dc8b0780] Missing Sequence Header.
[av1 @ 0x55e6dc8b0780] Missing Sequence Header.
[av1 @ 0x55e6dc8b0780] Missing Sequence Header.
[av1 @ 0x55e6dc8b0780] Missing Sequence Header.
[av1 @ 0x55e6dc8b0780] Missing Sequence Header.
[av1 @ 0x55e6dc8b0780] Missing Sequence Header.
[av1 @ 0x55e6dc8b0780] Missing Sequence Header.
[av1 @ 0x55e6dc8b0780] Missing Sequence Header.
[av1 @ 0x55e6dc8b0780] Missing Sequence Header.
video file opened successfully
[av1 @ 0x55e6dc97a7c0] Your platform doesn’t suppport hardware accelerated AV1 decoding.
[av1 @ 0x55e6dc97a7c0] Failed to get pixel format.

I have no i idea how to fix this?