How can I obtain audio and video characteristics in multimedia info when I'm using a for loop?

I'm using this code but the multimedia characteristics from avi files are not showed and Matlab send me this error after run the program: ??? ??? Index exceeds matrix dimensions What I want is to obtain characteristics from audio and video from this files but I need a loop because there are too many files

files= dir('*.avi');
numfiles=length(files);
mydata= cell(numfiles,1);

info=cell(numfiles,1);

for j=1:numfiles
info{j}=mmfileinfo(files(j).name);
audio=info(j).Audio
video=info(j).Video
end

for k=1:numfiles
mydata{k}=importdata(files(k).name);
end

Answer 1

[Dinesh Iyer]

The code below should fix the issue:

files= dir('*.avi');
numfiles=length(files);
mydata= cell(numfiles,1);
info=cell(numfiles,1);
isFileSupported =  true(numfiles, 1) ;

for j=1:numfiles
  try
      info{j}=mmfileinfo(files(j).name);
      audio = info{j}.Audio
      video = info{j}.Video
  catch ME
      isFileSupported(j) = false;
      continue;
  end
end

   supportedFiles = files(isFileSupported);

   for k=1:numel(supportedFiles)
       mydata{k}=importdata(supportedFiles(k).name);
   end

Hope this helps.

I would not recommend importing the data of all files into MATLAB at once because this can eat up a lot of memory depending upon the file size. Import data for each file as you need it.

Hope this helps.

Dinesh

[Jose Peñaloza]

Thank you!!! It works :)