我试图在Matlab Gui中设置一个滑块,以控制视频,例如移入视频的某些帧。" OBJ"是用户选择的视频文件。以下代码用于拍摄输入视频并在GUI的轴上显示。
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
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');
有人知道如何解决此问题,以便可以由滑块控制视频?
如果您拥有MATLAB的视觉工具箱,则可以从MATLAB使用此解决方案:
自定义GUI中的视频播放器