How can I see if a particular videowriter file is still open

I can't find a way to query the videowriter handle to see if the file is still open. I suppose I could try to write to it and see it it returns an error, but that seems clunky.

Answer 1

[Bhanu Prakash]

Hi Michael,

As per my understanding, you want to know how to check the status of a particular VideoWriter file.

To check the status of any file, you can use the “isopen” function.

Consider the code shown below:

x = VideoWriter(“VideoFile.avi”); 
status = isopen(x); 

where, “x” is the handle of the VideoWriter file and “status” is the output of the “isopen” function. The VideoWriter file is said to be open if the value of “status” is 1 and closed if the value of “status” is 0.

For more information on “VideoWriter” and “isopen” functions, you can refer to the following documentation:

For “VideoWriter” function:

https://www.mathworks.com/help/releases/R2023a/matlab/ref/videowriter.html?s_tid=doc_ta

For “isopen” function:

https://www.mathworks.com/help/releases/R2023a/database/ug/database.odbc.connection.isopen.html?s_tid=doc_srchtitle

[Michael]

That works perfectly. Thanks Bhanu!

Michael