video writer in matlab

I am accessing one video in my code and then modifying it. After that I am writing it using video writer but it is giving error that permission denied. I have look for the permissions i have and i have also run matlab as administrator but same error is coming. can you please tell me what could be problem in this?

Answer 1

[Walter Roberson]

Which directory are you trying to write the file to? You cannot write the file anywhere under the MATLAB installation directory; it needs to be in a directory of your own that you have write access to. If the file already exists then you need to have write access to the file.

[sweta arya]

error is coming while overwriting the existing video file. I have checked for write permissions as well. but still same error persists. what other things can i do to solve this problem?

[Walter Roberson]

What are the results of using fileattrib on the file? In particular the ownership information and all of the permissions ?

[Image Analyst]

You might not be able to write over it while you are still reading from it. Write a brand new file, then delete the original video file, and rename the new one to the old name.

[sweta arya]

fileattrib results for directory is:

Name: 'e:\harpreet'
         archive: 0
          system: 0
          hidden: 0
       directory: 1
        UserRead: 1
       UserWrite: 1
     UserExecute: 1
       GroupRead: NaN
      GroupWrite: NaN
    GroupExecute: NaN
       OtherRead: NaN
      OtherWrite: NaN
    OtherExecute: NaN

and for file is

Name: 'E:\harpreet\puppy.avi'
         archive: 1
          system: 0
          hidden: 0
       directory: 0
        UserRead: 1
       UserWrite: 1
     UserExecute: 1
       GroupRead: NaN
      GroupWrite: NaN
    GroupExecute: NaN
       OtherRead: NaN
      OtherWrite: NaN
    OtherExecute: NaN

And also I tried writing the file by deleting it first. But still it is giving the same error.

[Walter Roberson]

It appears that you might not be the owner of the file or directory. You will need to use Windows Explorer to examine the folder permissions; see https://msdn.microsoft.com/en-us/library/bb727008.aspx