Undefined function 'FFGrab' for input arguments of type 'char'.

Hi everyone,

I'm trying to solve the following issue. I was running the mmread Matlab code and suddenly I got the error Undefined function 'FFGrab' for input arguments of type 'char'.

(It gave me different warnings before but not this error).

Can anyone help me to solve it?

Thank you.

Answer 1

[KALYAN ACHARJYA]

Check here file is avalible, you must state the FFGrab.

[KALYAN ACHARJYA]

Toama Comment's

Thank you for the answer.

I have defined the FFGrab.cpp file. Do I have to do something else? (Sorry but I am new to this). And I have checked the link you pasted but I can't find anything but the mmread script.

[KALYAN ACHARJYA]

Is it FFGrab.cpp?

I have searched, but unable to find it now. There are numbers of thread of same issue,sorry.

Document says:

% useFFGRAB     [true] Use the new version of mmread, which uses ffmpeg.
%               However, if an audio or video stream can't be read AND you 
%               are running Windows try setting this to false (old version).

Set

useFFGRAB = true; 

Check it?? Not sure, I didnot delete this answer, so that people can get the issue quickly.

Wait for experts answer @Walter sir will give the way. If I get the issue, I will post it here.

[Toama]

The file I'm dealing with is FFGrab.cpp and I am using a MEX-file to call the C++ function.

I already set

useFFGRAB = true;

but the error is still showing.

[KALYAN ACHARJYA]

Sorry, I cann't help you on that issue, please wait experts will comment/answer on it.