copying AVI files by using Matlab

3 views (last 30 days)
Majid Al-Sirafi
Majid Al-Sirafi on 17 Dec 2017
Commented: Majid Al-Sirafi on 17 Dec 2017
Hi everyone
The following two Matlab code (which they do copy new avi files from another)
First one:
- By using VideoWriter
clear all;
close all; %%%%%%%%%%%%%%%%%%%%%%%
[filename pathname] = uigetfile('*.avi','File Selector');
vid = strcat(pathname, filename);
obj = mmreader(vid);
vid = read(obj);
Frames = obj.NumberOfFrames;
new10=VideoWriter('output10.avi');
for x = 1 : Frames
blocks{x}=vid(:,:,:,x);
end
open(new10);
for f=1:1
ss=im2frame(blocks{f});
writeVideo(new10,ss);
end
close(new10);
msgbox('end of operation','Message','warn');
Second one:
- By using avifile
close all
clear all
[filename pathname] = uigetfile('*.avi','File Selector');
vid = strcat(pathname, filename);
obj = mmreader(vid);
vid = read(obj);
frames = obj.NumberOfFrames;
%%
new10=avifile('output10.avi','compression','None');
for x = 1 : frames
a=vid(:,:,:,x);
blocks{x}=a;
end
%%
for f=1:frames
new10=add frame(new10,blocks{f});
end
new10=close(new10);
msgbox('end of operation','Message','warn');
After running the first one program the new avi file is different from the original file (the pixels of frames are different).
While, after running the first one program the new avi file is same asthe original file (the pixels of
frames are similar).
Please inform me the reason
Best regards
Majid
  4 Comments
Majid Al-Sirafi
Majid Al-Sirafi on 17 Dec 2017
hi dear Jan this is first one
close all
clear all
[filename pathname] = uigetfile('*.avi','File Selector');
vid = strcat(pathname, filename);
obj = mmreader(vid);
vid = read(obj);
Frames = obj.NumberOfFrames;
new10=VideoWriter('output10.avi');
for x = 1 : Frames
blocks{x}=vid(:,:,:,x);
end
open(new10);
for f=1:1
ss=im2frame(blocks{f});
writeVideo(new10,ss);
end
close(new10);
msgbox('end of operation','Message','warn');
and this second one
close all
clear all
[filename pathname] = uigetfile('*.avi','File Selector');
vid = strcat(pathname, filename);
obj = mmreader(vid);
vid = read(obj);
frames = obj.NumberOfFrames;
new10=avifile('output10.avi','compression','None');
for x = 1 : frames
a=vid(:,:,:,x);
blocks{x}=a;
end
for f=1:frames
new10=addframe(new10,blocks{f});
end
new10=close(new10);
msgbox('end of operation','Message','warn');
regards
Majid

Sign in to comment.

Answers (1)

Image Analyst
Image Analyst on 17 Dec 2017
Why not simply use copyfile()?
  1 Comment
Majid Al-Sirafi
Majid Al-Sirafi on 17 Dec 2017
Actually, this copy is the first step in video processing. later I want to develop this procedure in another processing not just for copying
best regards Majid

Sign in to comment.

Categories

Find more on Programming in Help Center and File Exchange

Community Treasure Hunt

Find the treasures in MATLAB Central and discover how the community can help you!

Start Hunting!