Question

我正在尝试在MATLAB GUI中设置一个滑块来控制视频，就像移动到某些视频帧一样。 'obj'是用户选择的视频文件。以下代码用于获取输入视频并显示在GUI的轴中。

    global b    
    filename = get(handles.edit3, 'String');
      if ~exist(filename, 'file')
        warndlg( 'Text in edit box is not the name of a file');
        return
      end
      try
        obj = VideoReader(filename);
      catch
        warndlg( 'File named in edit box does not appear to be a usable movie file');
        return
      end

    axes(handles.axes2)
    handles.pushbutton5=0;
    guidata(hObject,handles);
    while ~(handles.pushbutton5)
        if hasFrame(obj)
        vidFrame = readFrame(obj);
        obj;
        image(vidFrame, 'Parent', handles.axes2);
        set(axes, 'Visible', 'off');
        pause(1/obj.FrameRate)
        end
        handles = guidata(hObject);
    end
    clear obj

当用户控制滑块时，滑块将提供“b”值。

function slider2_Callback(hObject, eventdata, handles)
% hObject    handle to slider2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Hints: get(hObject,'Value') returns position of slider
%        get(hObject,'Min') and get(hObject,'Max') to determine range of slider
global b
 b = get(handles.slider2,'Value');

有谁知道如何解决这个问题，以便可以通过滑块控制视频？

Answer 1

如果你拥有matlab的视觉工具箱，你可以使用matlab的这个解决方案：

Video Player in a custom GUI

如何在MATLAB GUI中设置滑块来控制视频？

1 个答案: