player一开始的紫色怎么去掉

[chenyin-code]

Describe the bug A clear and concise description of what the bug is.

To Reproduce Steps to reproduce the behavior:

Expected behavior A clear and concise description of what you expected to happen.

Environment:

• OS:
• GPU: optional

Log Add any other context about the problem here.

setLogHandler([&log_file](LogLevel level, const char* msg){
    //write_msg_to_a_file(msg); // it's better to add system time. example: https://github.com/wang-bin/mdk-examples/blob/master/GLFW/prettylog.h
});

[wang-bin]

什么系统？如果是苹果的话感觉是CAMetalLayer默认的颜色，如果没有视频帧，我这边不会渲染任何东西，我用glfwplay测试结果是用metal就是紫色，opengl是黑的。你可以写个最简单的MTKView验证下。要去掉的话得强行喂一帧，但好像还是会紫色闪一下

        uint8_t rgba[64*64*4] = {};
        const uint8_t* data[] = {
            rgba
        };
        VideoFrame frame(64, 64, PixelFormat::RGBA);
        frame.setBuffers(data);
        player.enqueue(frame, vid);