why do I get "Error using VideoReader/initReader Too many output arguments"

I use it like this:

clear
pathname = uigetdir()
[file,pathname]=uigetfile(pathname);
filename=strcat(pathname,file);
v = VideoReader(filename);

So I am selecting a file that exists, This seems to be independent of the video file I try to read, as a matter of fact it doesn matter if the file exist or not.

I also get the same error when using mmfileinfo

[Florian Bidaud]

Can you show the value of filename before it is inputted in VideoReader ?

[Napoleon Leoni]

Sure!

%% Select video file
% Initialize variables.
clear
pathname = uigetdir()
[file,pathname]=uigetfile(pathname);
filename=strcat(pathname,file);
disp(filename);
%% read video
v = VideoReader(filename);

The output from this:

>> filename

filename =

'C:\Users\nleoni\Documents\microfluidics\helios\MI1\videos\20230918R2493Unit1038_50s.mp4'

pathname =

'C:\Users\nleoni\Documents\microfluidics\helios\MI1\videos'

C:\Users\nleoni\Documents\microfluidics\helios\MI1\videos\20230918R2493Unit1038_50s.mp4

Error using VideoReader/initReader

Too many output arguments.

Error in audiovideo.internal.IVideoReader (line 136)

initReader(obj, fileName, currentTime);

Error in VideoReader (line 104)

[e-mail](varargin{:});

Error in videoReaderTest (line 10)

v = VideoReader(filename);

Answer 1

[Napoleon Leoni]

Solved,

Hopefully no one spent to much time on this. There must have been another function with a similar name in the path, not sure but maybe from some older work I had done....

After moving the script to a different directory and narrowing the scope of the path it actually works