System Information

Android 9

Detailed description

When loading H264 video on Android using VideoCapture with CAP_ANDROID api, it returns RGB frames instead of BGR.
If you copy a H264 video using VideoCapture + VideoWriter, it switches red and blue colors.

Steps to reproduce

videoCapture = new VideoCapture(videoFilename1, Videoio.CAP_ANDROID);
Mat frame = new Mat();
videoCapture.read(frame);

videoWriter = new VideoWriter();
videoWriter.open(videoFilename2, Videoio.CAP_ANDROID, VideoWriter.fourcc('H', '2', '6', '4'), FPS, new Size(frame.cols(), frame.rows()));

videoWriter.write(frame);
while (true) {
    videoCapture.read(frame);
    if (frame.empty()) {
        break;
    }
    videoWriter.write(frame);
}
videoWriter.release();
videoCapture.release();

Issue submission checklist

• I report the issue, it's not a question
• I checked the problem with documentation, FAQ, open issues, forum.opencv.org, Stack Overflow, etc and have not found any solution
• I updated to the latest OpenCV version and the issue is still there
• There is reproducer code and related data files (videos, images, onnx, etc)