how to process multiple video files from a folder

I am in the process of processing numerous video files from a folder, so I need a sample support for processing one video file at a time. I am using the following snippet, but I am getting stuck with the following additional parameter when I look at the file name, which is halting my progress. Any assistance would be greatly appreciated.

folder = 'C:\Video_file\';
files = dir(folder)

files = 

  0×1 empty struct array with fields:

    name
    folder
    date
    bytes
    isdir
    datenum

files.name
numel(files.name)

Error using numel
Not enough input arguments.

ans =

   162 % on my windows system

I see followig output

files.name

ans =

'.' % this is NOT required

ans =

'..' % this is NOT required

ans =

'dummy1.avi'

ans =

'dummy2.avi'

Thank you very much.

[Stephen23]

By far the simplest approach is to specify the filename (using wildcards as required) and fileextension:

F = 'C:\Video_file\';
S = dir(fullfile(F,'*.avi'))

[Life is Wonderful]

That makes sense.

I can view the files and don't notice any new syntax. Aside from that, how can I process one file at a time? If I consider

numel(S.name)

, I observe return as 46 rather than two files since I want to loop through the files one by one. Could you please help me?

Thank you very much.

[Stephen23]

numel(S.name) % this will throw an error if S has zero/multiple elements.

"I want to loop through the files one by one"

You can simply loop over the elements of S:

S = dir(..);
for k = 1:numel(S)
    F = fullfile(S(k).folder,S(k).name);
    % do whatever you want with filename F
end

https://www.mathworks.com/help/matlab/import_export/process-a-sequence-of-files.html

https://www.mathworks.com/help/matlab/matlab_prog/access-multiple-elements-of-a-nonscalar-struct-array.html

[Life is Wonderful]

Thank you very @Stephen23

I could implement my solution.

Answer 1

[Chetan Bhavsar]

files = dir('C:\Video_file\*.avi')

[Life is Wonderful]

Thanks !!

Answer 2

[Image Analyst]

This is one of the most common FAQ questions, so see the FAQ:

https://matlab.fandom.com/wiki/FAQ#How_can_I_process_a_sequence_of_files?

[Life is Wonderful]

Thanks