Hello Everyone, How can I check if someone uploads a video in MATLAB GUI using browse button instead of uploading an image?

Hello Everyone, How can I check if someone uploads a video in MATLAB GUI using browse button instead of uploading an image? I am developing tool for image processing and I want to apply a check on the browse button so whenever the end user try to upload a video, it will show an error message.

[Mehmed Saad]

are you using uigetfile?

[Ahsan Malik]

[Filename,Pathname]=uigetfile('*.*','File Selector');

Yes I am using this.

[Rik]

You can use fileparts to extract the extension and compare it to the list of extensions imread supports. I don't have a suggestion for how you could generate a list of video formats, but if you just want to throw an error when the user doesn't select an image, this strategy should work for you.

[Ahsan Malik]

yes I've tried....Its working.

Answer 1

[Walter Roberson]

Use try/catch on the imread. When the imread fails use try/catch on imfinfo; if it succeeds it was video (or possibly audio in container) and if it fails the file was not image or video.

[Ahsan Malik]

Thank You.

[Walter Roberson]

caution: Support for some formats is based on the contents of the file, not on the file extension. On some platforms if you rename an image file to the wrong extension then the code will detect the correct format instead of relying on the extension

Answer 2

[Mehmed Saad]

Try this

[Filename,Pathname] =uigetfile(...
{'*.png','PNG (*.png)';
'*.tif;*.tiff','TIFF (*.tif,*.tiff)';
'*.gif','GIF (*.gif)';
'*.jpg;*.jpeg;*.jpe;*.jfif','JPEG (*.jpg,*.jpeg,*.jpe,*.jfif)';
'*.bmp','BMP (*.bmp)';},'File Selector')

He can only select these types of file and is not possible for him select any other file

Also you can go with this too

[Filename,Pathname] =uigetfile(...
{'*.png;*.jpg;*.jpeg;*.jpe;*.jfif;*.tif;*.tiff;*.gif;*.bmp',...
'Image File(*.png,*.jpg,*.jpeg,*.jpe,*.jfif,*.tif,*.tiff,*.gif,*.bmp)'},'File Selector');

[Ahsan Malik]

Thanks for the help.

[Walter Roberson]

there is sometimes a way to escape a file extension restriction, depending on the operating system

[Ahsan Malik]

Sir can you tell me which of the image formats are supported by MATLAB e.g. tiff file so I can also apply a check on that

[Walter Roberson]

see imformats()

[Ahsan Malik]

ok thanks