请帮我写一个基于matlab的视频播放器GUI

以下是一个基于Matlab的简单视频播放器GUI的示例代码：

function videoPlayerGUI
    % Create a figure window
    fig = figure('Position', [100 100 640 480], 'MenuBar', 'none', 'ToolBar', 'none', 'NumberTitle', 'off', 'Name', 'Video Player');
    % Create a video player object
    vidPlayer = VideoReader('example_video.mp4');
    % Create a timer object for updating the video frames
    timerObj = timer('TimerFcn', {@updateFrame, vidPlayer, fig}, 'Period', 0.05, 'ExecutionMode', 'fixedRate');
    % Create GUI controls
    btnPlay = uicontrol('Style', 'pushbutton', 'String', 'Play', 'Position', [20 20 50 30], 'Callback', {@playVideo, timerObj});
    btnPause = uicontrol('Style', 'pushbutton', 'String', 'Pause', 'Position', [90 20 50 30], 'Callback', {@pauseVideo, timerObj});
    btnStop = uicontrol('Style', 'pushbutton', 'String', 'Stop', 'Position', [160 20 50 30], 'Callback', {@stopVideo, timerObj});
    slider = uicontrol('Style', 'slider', 'Position', [240 20 300 30], 'Callback', {@jumpToFrame, vidPlayer});
    % Start the timer object
    start(timerObj);
    % Function to update the video frames
    function updateFrame(~, ~, vidPlayer, fig)
        if hasFrame(vidPlayer)
            frame = readFrame(vidPlayer);
            imshow(frame, 'Parent', fig);
            set(slider, 'Value', vidPlayer.CurrentTime/vidPlayer.Duration);
        else
            stop(timerObj);
        end
    end
    % Function to play the video
    function playVideo(~, ~, timerObj)
        start(timerObj);
    end
    % Function to pause the video
    function pauseVideo(~, ~, timerObj)
        stop(timerObj);
    end
    % Function to stop the video
    function stopVideo(~, ~, timerObj)
        stop(timerObj);
        vidPlayer.CurrentTime = 0;
    end
    % Function to jump to a specific frame in the video
    function jumpToFrame(~, ~, vidPlayer)
        vidPlayer.CurrentTime = vidPlayer.Duration * get(slider, 'Value');
    end
end

该GUI包括一个播放按钮、一个暂停按钮、一个停止按钮和一个滑动条，用于调整视频播放进度。视频播放器使用Matlab的VideoReader对象来读取视频帧，并使用Matlab的定时器对象来更新视频帧和滑动条。当视频播放完毕或用户点击停止按钮时，定时器对象将停止运行。