How to find the mouse hover positions (and preferably time stamps) while playing a video?

function varargout = Video_Annotate_GUI(varargin)
% VIDEO_ANNOTATE_GUI MATLAB code for Video_Annotate_GUI.fig
% VIDEO_ANNOTATE_GUI, by itself, creates a new VIDEO_ANNOTATE_GUI or raises the existing
%      singleton*.
%
%      H = VIDEO_ANNOTATE_GUI returns the handle to a new VIDEO_ANNOTATE_GUI or the handle to
%      the existing singleton*.
%
%      VIDEO_ANNOTATE_GUI('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in VIDEO_ANNOTATE_GUI.M with the given input arguments.
%
%      VIDEO_ANNOTATE_GUI('Property','Value',...) creates a new VIDEO_ANNOTATE_GUI or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before Video_Annotate_GUI_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to Video_Annotate_GUI_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

% Edit the above text to modify the response to help Video_Annotate_GUI

% Last Modified by GUIDE v2.5 02-Oct-2018 20:30:14

% Begin initialization code - DO NOT EDIT
gui_Singleton = 1;
gui_State = struct('gui_Name',       mfilename, ...
                 'gui_Singleton',  gui_Singleton, ...
                 'gui_OpeningFcn', @Video_Annotate_GUI_OpeningFcn, ...
                 'gui_OutputFcn',  @Video_Annotate_GUI_OutputFcn, ...
                 'gui_LayoutFcn',  [] , ...
                 'gui_Callback',   []);
if nargin && ischar(varargin{1})
  gui_State.gui_Callback = str2func(varargin{1});
end

if nargout
   [varargout{1:nargout}] = gui_mainfcn(gui_State, varargin{:});
else
   gui_mainfcn(gui_State, varargin{:});
end
% End initialization code - DO NOT EDIT

% --- Executes just before Video_Annotate_GUI is made visible.
function Video_Annotate_GUI_OpeningFcn(hObject, eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
% varargin   command line arguments to Video_Annotate_GUI (see VARARGIN)

% Choose default command line output for Video_Annotate_GUI
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

% UIWAIT makes Video_Annotate_GUI wait for user response (see UIRESUME)
% uiwait(handles.figure1);

% --- Outputs from this function are returned to the command line.
function varargout = Video_Annotate_GUI_OutputFcn(hObject, eventdata, handles) 
% varargout  cell array for returning output args (see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% Get default command line output from handles structure

varargout{1} = handles.output;

% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
axeshandle=handles.axes1;
set(axeshandle.tx,'string','None');

% Load the video
[filename,pathname]=uigetfile('*.wmv','Pick the video');

if ~isequal(filename,0)
   try
    axeshandle.mov = VideoReader('A1_PreTBI_01212015.wmv');  
    axeshandle.AXP = get(axeshandle,'CurrentPoint');
    %F=axeshandle.AXP;
    set(axeshandle.tx,'string','None')
    % Update handles structure
    guidata(hObject, handles);
    % Display first frame
    % img=readframe(mov,1);
    subplot(axeshandle.input_frame);
    image(axeshandle.mov(1).cdata);
    axis off;
    set(handles.original_text,'String', ...
        sprintf('Original frame:1 of %d',length(axeshandle.mov)));
   catch
    errordlg(lasterr,'File I/O error');  
   end
 end
end
% --- If Enable == 'on', executes on mouse press in 5 pixel border.
% --- Otherwise, executes on mouse press in 5 pixel border or over pushbutton1.
% function pushbutton1_ButtonDownFcn(hObject, eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)

% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
set(axeshandle,'unit','pix');
% Update handles structure
guidata(hObject, handles);
if isempty(axehandle.mov)
   errordlg('Please load a movie and try again!');
   return;
end
nFrames=length(axeshandle.mov);
tpos=[];
try
 disp('Playing the video...');
 for ii=1:nFrames
     f=axeshandle.mov(ii).cdata;
     % f.ButtonDownFcn = @axes1_ButtonDownFcn;
     subplot(axeshandle.input_frame);
     set(handles.original_text,'String', ...
        sprintf('Original frame:%d of %d',ii,length(axeshandle.mov)));
     set(P,'windowbuttonmotionfcn',{@fh_wbmfcn_v2,axeshandle}); % Set the motion detector.
     tpos{ii}=P;
     image(f);
    % himage=image(f,'parent', axeshandle);
   % imshow(img,himage);
    axis off;
    drawnow
   end
 catch 
  errordlg('lasterr','video error.');
 end
 end

    function fh_wbmfcn_v2(varargin)
     % WindowButtonMotionFcn for the figure.
      S = varargin{2};  % Get the structure. 
      F = get(S.AXP,'CurrentPoint');  % The current point w.r.t the figure.
      tf1 = S.AXP(1,1)<= F(1) && F(1) <= S.AXP(1,1) + S.AXP(1,3);
      tf2 = S.AXP(1,2) <= F(2) && F(2) <= S.AXP(1,2) + S.AXP(1,4);
      if tf1 && tf2
         set(S.tx(2),'str',['Axes ' num2str(1)])
         disp(['Current point(X,Y):(',num2str(F(1)),',',num2str(F(2)),')'])
      else
        set(S.tx(2),'str',['Axes ' num2str(1)])
        disp(['Current point(X,Y):(',num2str(F(1)),',',num2str(F(2)),')'])

      end
    end

    %     function axis1_ButtonDownFcn(hObject, eventdata, handles)
    % hObject    handle to pushbutton2 (see GCBO)
    % eventdata  reserved - to be defined in a future version of MATLAB
    % handles    structure with handles and user data (see GUIDATA)

    %     end
    % --- If Enable == 'on', executes on mouse press in 5 pixel border.
    % --- Otherwise, executes on mouse press in 5 pixel border or over pushbutton2.
    %     function pushbutton2_ButtonDownFcn(hObject, eventdata, handles)
    % hObject    handle to pushbutton2 (see GCBO)
    % eventdata  reserved - to be defined in a future version of MATLAB
    % handles    structure with handles and user data (see GUIDATA)
   end
   end
   end

When I run, I get the following error:

Error: File: Video_Annotate_GUI.m Line: 133 Column: 9
Functions cannot be indexed using {} or . indexing.

Any help is much appreciated.

-M

[Rik]

What exactly is line 133 for you? Please copy the entire red text. When I copy-paste this code, line 133 is S = varargin{2}; % Get the structure. and that doesn't have an obvious problem.

[CuriousThinker]

Hi Rik. In line 133, I have the following:

f=axeshandle.mov(ii).cdata;

[CuriousThinker]

I have modified the code as follows:

function varargout = Video_Annotate_GUI(varargin)
% VIDEO_ANNOTATE_GUI MATLAB code for Video_Annotate_GUI.fig
%      VIDEO_ANNOTATE_GUI, by itself, creates a new VIDEO_ANNOTATE_GUI or raises the existing
%      singleton*.
%
%      H = VIDEO_ANNOTATE_GUI returns the handle to a new VIDEO_ANNOTATE_GUI or the handle to
%      the existing singleton*.
%
%      VIDEO_ANNOTATE_GUI('CALLBACK',hObject,eventData,handles,...) calls the local
%      function named CALLBACK in VIDEO_ANNOTATE_GUI.M with the given input arguments.
%
%      VIDEO_ANNOTATE_GUI('Property','Value',...) creates a new VIDEO_ANNOTATE_GUI or raises the
%      existing singleton*.  Starting from the left, property value pairs are
%      applied to the GUI before Video_Annotate_GUI_OpeningFcn gets called.  An
%      unrecognized property name or invalid value makes property application
%      stop.  All inputs are passed to Video_Annotate_GUI_OpeningFcn via varargin.
%
%      *See GUI Options on GUIDE's Tools menu.  Choose "GUI allows only one
%      instance to run (singleton)".
%
% See also: GUIDE, GUIDATA, GUIHANDLES

 % Edit the above text to modify the response to help 
 Video_Annotate_GUI

 % Last Modified by GUIDE v2.5 02-Oct-2018 20:30:14

 % Begin initialization code - DO NOT EDIT
 gui_Singleton = 1;
 gui_State = struct('gui_Name',       mfilename, ...
                   'gui_Singleton',  gui_Singleton, ...
                   'gui_OpeningFcn', 
 @Video_Annotate_GUI_OpeningFcn, ...
                   'gui_OutputFcn',  
 @Video_Annotate_GUI_OutputFcn, ...
                   'gui_LayoutFcn',  [] , ...
                   'gui_Callback',   []);
 if nargin && ischar(varargin{1})
    gui_State.gui_Callback = str2func(varargin{1});
 end

 if nargout
    [varargout{1:nargout}] = gui_mainfcn(gui_State, 
  varargin{:});
 else
    gui_mainfcn(gui_State, varargin{:});
 end
  % End initialization code - DO NOT EDIT

% --- Executes just before Video_Annotate_GUI is made 
visible.
function Video_Annotate_GUI_OpeningFcn(hObject, 
 eventdata, handles, varargin)
% This function has no output args, see OutputFcn.
% hObject    handle to figure
% eventdata  reserved - to be defined in a future 
version of MATLAB
% handles    structure with handles and user data 
(see GUIDATA)
% varargin   command line arguments to 
Video_Annotate_GUI (see VARARGIN)

% Choose default command line output for 
Video_Annotate_GUI
handles.output = hObject;

% Update handles structure
guidata(hObject, handles);

end
% UIWAIT makes Video_Annotate_GUI wait for user 
response (see UIRESUME)
% uiwait(handles.figure1);

% --- Outputs from this function are returned to the 
command line.
function varargout = 
Video_Annotate_GUI_OutputFcn(hObject, eventdata, 
handles) 
% varargout  cell array for returning output args 
(see VARARGOUT);
% hObject    handle to figure
% eventdata  reserved - to be defined in a future 
version of MATLAB
% handles    structure with handles and user data 
(see GUIDATA)

% Get default command line output from handles 
structure

    varargout{1} = handles.output;

%   guidata(hObject, axeshandle);

    pushbutton1_Callback(hObject, eventdata, handles)
    pushbutton2_Callback(hObject, eventdata, handles) 
    uiwait(handles.axes1);

end    
% --- Executes on button press in pushbutton1.
function pushbutton1_Callback(hObject, eventdata, 
handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future 
version of MATLAB
% handles    structure with handles and user data (see GUIDATA)
axeshandle=handles.axes1;

set(axeshandle.tx,'string','None');

% Load the video
[filename,pathname]=uigetfile('*.wmv','Pick the 
video');

if ~isequal(filename,0)
   try
    axeshandle.mov = 
    vision.VideoFileReader(pathname,filename); 
    Frames = 0;
    axeshandle.AXP = get(axeshandle,'CurrentPoint');
  %       F=axeshandle.AXP;
    set(axeshandle.txt,'string','None')
    % Update handles structure
    guidata(hObject, handles);
    % Display first frame
%       img=readframe(mov,1);
      subplot(axeshandle.input_frame);
      image(axeshandle.mov(1).cdata);
      axis off;
      set(handles.original_text,'String', ...
        sprintf('Original frame:1 of 
%d',length(axeshandle.mov)));
    catch
      errordlg(lasterr,'File I/O error');  
    end
end
end
% --- If Enable == 'on', executes on mouse press in 5 
pixel border.
% --- Otherwise, executes on mouse press in 5 pixel 
border or over pushbutton1.
% function pushbutton1_ButtonDownFcn(hObject, 
eventdata, handles)
% hObject    handle to pushbutton1 (see GCBO)
% eventdata  reserved - to be defined in a future 
version of MATLAB
% handles    structure with handles and user data 
(see GUIDATA)

% --- Executes on button press in pushbutton2.
function pushbutton2_Callback(hObject, eventdata, 
handles)
% hObject    handle to pushbutton2 (see GCBO)
% eventdata  reserved - to be defined in a future 
version of MATLAB
% handles    structure with handles and user data 
(see GUIDATA)
axeshandle=handles.axes1;

set(axeshandle,'unit','pix');
% Update handles structure
guidata(hObject, handles);
if isempty(axehandle.mov)
   errordlg('Please load a movie and try again!');
   return;
end
nFrames=length(axeshandle.videoSrc);
tpos=[];
try
  disp('Playing the video...');
  while ~isDone(videoSrc)
      axeshandle.vFrame=step(videoSrc);
      f=axeshandle.vFrame;
      guidata(hObject, handles);
%       f.ButtonDownFcn = @axes1_ButtonDownFcn;
      subplot(f);
      set(handles.original_text,'String', ...
        sprintf('Original frame:%d of 
%d',ii,length(axeshandle.mov)));
      set(P,'windowbuttonmotionfcn', 
      {@fh_wbmfcn_v2,axeshandle}); % Set the motion 
      detector.
      %       tpos{ii}=P;
      Frames = Frames+1;
      image(f);
      % himage=image(f,'parent', axeshandle);
      %     imshow(img,himage);
        axis off;
      drawnow
  end
catch 
    errordlg('lasterr','video error.');
end
end

function fh_wbmfcn_v2(varargin)
% WindowButtonMotionFcn for the figure.
    S = varargin{2};  % Get the structure. 
    F = get(S.AXP,'CurrentPoint');  % The current 
point w.r.t the figure.
    tf1 = S.AXP(1,1)<= F(1) && F(1) <= S.AXP(1,1) + 
S.AXP(1,3);
    tf2 = S.AXP(1,2) <= F(2) && F(2) <= S.AXP(1,2) + 
S.AXP(1,4);
    if tf1 && tf2
       set(S.tx(2),'str',['Axes ' num2str(1)])
       disp(['Current point(X,Y): 
(',num2str(F(1)),',',num2str(F(2)),')'])
    else
       set(S.tx(2),'str',['Axes ' num2str(1)])
       disp(['Current point(X,Y): 
(',num2str(F(1)),',',num2str(F(2)),')'])
    end
end

%     function axis1_ButtonDownFcn(hObject, 
eventdata, handles)
  % hObject    handle to pushbutton2 (see GCBO)
 % eventdata  reserved - to be defined in a future 
 version of MATLAB
 % handles    structure with handles and user data 
(see GUIDATA)

   %     end
   % --- If Enable == 'on', executes on mouse press in 
   5 pixel border.
   % --- Otherwise, executes on mouse press in 5 pixel 
  border or over pushbutton2.
  %     function pushbutton2_ButtonDownFcn(hObject, 
  eventdata, handles)
  % hObject    handle to pushbutton2 (see GCBO)
  % eventdata  reserved - to be defined in a future 
  version of MATLAB
  % handles    structure with handles and user data 
  (see GUIDATA)
  % end
  % end
  end

Then I have the following error:

   No appropriate method, property, or field 'tx' for 
   class 'matlab.graphics.axis.Axes'.

Error in Video_Annotate_GUI/pushbutton1_Callback 
(line 91)
set(axeshandle.tx,'string','None');

Error in 
Video_Annotate_GUI/Video_Annotate_GUI_OutputFcn (line 
79)
pushbutton1_Callback(hObject, eventdata, handles)

Error in gui_mainfcn (line 264)
      feval(gui_State.gui_OutputFcn, gui_hFigure, [], 
gui_Handles);

Error in Video_Annotate_GUI (line 42)
  gui_mainfcn(gui_State, varargin{:});