Can't saveas in a specific folder => Error using saveas(line 60) Invalid handle

Hello,

I have a problem in my code, I want to select a file (video)

Create a folder with the file name

And save some frame of my video in this file with a name which contain : the video name + 'string' + date (video_frameRep_10-21-2021_12-16)

My code :

%Selection d'un fichier
[file, path] = uigetfile({'*.avi';'*.mov';'*.mp4';'*.*'},'Choississez votre fichier :');
import_video = fullfile(path, file);
[path, file, extension] = fileparts(import_video);

video = VideoReader(import_video);
first_frame = read(video,1);
figure;
imshow(first_frame);
drawcircle;

mkdir C:/Users/admin/Documents resultat_Suppression_mouvement_et_balayage
mkdir ('C:/Users/admin/Documents/resultat_Suppression_mouvement_et_balayage', file)

Filename = sprintf('%s_test_%s.jpeg',file, datestr(now,'mm-dd-yyyy_HH-MM'))
Folder = 'C:\Users\admin\Documents\resultat_Suppression_mouvement_et_balayage\nom_fichier'

saveas(first_frame,fullfile(Folder, Filename));

Thanks for help !

[Stephen23]

https://www.mathworks.com/help/matlab/ref/imwrite.html

Answer 1

[Cris LaPierre]

saveas saves a figure to a specific file format. The first input to saveas is expected to be a figure handle. You are passing in a numeric or structure array.

You can see examples of how to use saveas here:

https://www.mathworks.com/help/matlab/ref/saveas.html