MATLAB: How to extract file path from BROWSE button using uigetfile to be used in another push button in MATLAB GUI

browse buttonguidematlab gui

I am creating a GUI using MATLAB's guide. I created a BROWSE button which asks the user to select a video file for analysis using the uigetfile function. The video file is then set to play in an axes within the GUI.
Now, I have another push button that shall be pressed to process the selected video. This process however requires the file path of the video file.
How can I extract the file path from the other previous button (BROWSE) so I may use it for the next push button (CARCOUNT)? THANK YOU!
HERE IS A SECTION OF MY CODE:
function browse_Callback(hObject, eventdata, handles)
% hObject    handle to browse (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB

% handles    structure with handles and user data (see GUIDATA)

[FileName,FilePath]=uigetfile('*.avi', 'Select a video');
ExPath = [FilePath FileName]
set(handles.file_path,'String',ExPath);
guidata(hObject, handles);
vid = VideoReader(ExPath);
vidFrames = read(vid); %read in all video frames
numFrames = get(vid, 'numberOfFrames'); %get the number of frames from the video file
%Create a movie structure from the video frames initialized.
for k = 1 : numFrames
            mov(k).cdata = vidFrames(:,:,:,k);
            mov(k).colormap = [];
end
%Create a figure
hf = handles.vid_play_box;
% Resize figure based on the video's width and height
set(hf);
% Playback movie once at the video's frame rate
movie(hf, mov, 1);
function initializeprocess_Callback(hObject, eventdata, handles)
% hObject    handle to carcount (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
filename = browse_Callback('ExPath');

Best Answer

You used
set(handles.file_path,'String',ExPath);
so in the routine that needs the name, you can use
get(handles.file_path, 'String')
By the way, please learn to use fullfile(). You currently use
ExPath = [FilePath FileName]
but it is undefined as to whether the director ('FilePath') returned by uigetfile ends in a directory delimiter or not, and there are no promises made that it would be consistent from call to call.
Related Question