MATLAB: Do I get “Video file I/O requires Gstreamer 1.0 and higher. Install this on your system and restart MATLAB” error when using “VideoReader” in MATLAB

gstreamerinstallMATLABvideoreader

I want to use the "VideoReader" function in MATLAB.

I have installed gstreamer 1.0 to my home directory and added the location to $LD_LIBRARY_PATH:

When compiling gstreamer, I installed gstreamer to the location:

/data/home/<userid>/GST

Therefore, under this directory they have:

> ls ~/GST
bin include lib libexec share

and I added the library to the path as:

> export LD_LIBRARY_PATH=/data/home/<userid>/GST/lib

However, I still get the following error in MATLAB:

>> video = VideoReader("test.mp4");
Error using VideoReader/init (line 601)
Video file I/O requires Gstreamer 1.0 and higher.
 Install this on your system and restart MATLAB.

Best Answer

As stated in the error message displayed, you might not have installed the Gstreamer library correctly.

Typically, MathWorks Technical Support does not debug gstreamer installation issues.

You can first try to verify you have installed gstreamer correctly by using the libraries outside MATLAB. For example:

1. Execute a simple C/C++ program in the your machine that uses gstreamer header files and libraries will help in isolating if the installation was successful or not.

2. If you are unable to write a standalone C code, you can also try to use the utility gst-launch in your system prompt:

> gst-launch-1.0 playbin uri=file:[path_to_some_filename]

If you have verified that you can use the gstreamer libraries successfully outside of MATLAB but still receiving the same error message when calling "VideoReader", you can contact MathWorks Technical Support for further troubleshooting steps.

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MATLAB: Do I get an error `GLIBCXX_3.4.9 not found’ when starting the network license manager for R2011b or earlier

This enhancement has been incorporated in Release 2012a (R2012a). For previous product releases, read below for any possible workarounds:

This issue is caused by a missing or outdated libstdc++.so.6 as required by the keycheck application (R2011a) or the MLM vendor daemon (R2011b). Both the R2011a keycheck and R2011b MLM vendor daemon require libstdc++.so.6.0.10. Refer to your operating system documentation for information on how to update or install a missing library.

If the necessary version of the library is not available for your Linux distribution it can be copied and installed from the MATLAB installation files following the instructions below:

NOTE: $MATLAB refers to the MATLAB installation location (ex: /usr/local/MATLAB/R2011b)

NOTE: $ARCH refers to the machine architecture (ex: glnx86 for Linux 32-bit or glnxa64 for Linux 64-bit)

If MATLAB is installed in addition to the network license manager, skip directly to step 3.

1. Create a subdirectory within the MATLAB installation folder as shown below:

 [root@localhost ~] mkdir -p $MATLAB/sys/os/$ARCH

2. Copy the libstdc++.so.6.0.10 library from the MATLAB installation files (either an installation DVD or the extracted downloaded installer archive) into the newly created directory:

 [root@localhost ~] cp /media/MATLAB_R2011b/bin/$ARCH/libstdc++.so.6.0.10 $MATLAB/sys/os/$ARCH

3. Run 'ldconfig' to create symbolic links to the new library and update the dynamic linker cache (please note that this command must be run using an absolute path):

 [root@localhost ~] ldconfig $MATLAB/sys/os/$ARCH

4. After verifying this works, you will need to add $MATLAB/sys/os/$ARCH to the /etc/ld.so.conf file, or add the full ldconfig command to your boot script.

For Red Hat Enterprise Linux 5 (RHEL5) the following can be added to your startup script which avoids needing ldconfig and affects only the lmgrd and MLM.

Add to the /etc/init.d/lmgrd startup script:

 export LD_PRELOAD=$MATLAB/sys/os/glnxa/libstdc++.so.6

MATLAB: What is the license manager Keycheck utility

At MATLAB 7.11 (R2010b) a license file verification utility called "keycheck" was included along with the Network License Manager. As of R2011b the keycheck is fully integrated into the License Manager and is automatically run every time the manager is started.

Keycheck can examine a license file for possible misconfigurations. Example errors include duplicated license keys and invalid license numbers. Keycheck provides a convenient tool to assist license administrators in maintaining license compliance.

Keycheck will only verify license files recently generated at the MathWorks License Center. Network license files generated by the License Center are backwards compatible and include all keys for all releases.

Keycheck verification is performed against a license file, not a running license manager. Keycheck does not provide real-time license manager verification.

While designed to identify common license file errors, Keycheck does not detect all possible license misconfigruations. Do not rely upon Keycheck to guarantee license compliance.

The keycheck application is located in:

 $MATLAB\etc\$ARCH

where $MATLAB is the MATLAB installation location and $ARCH is the machine architecture.

NOTE: Keycheck is now an automatic function when starting the License Manager in releases R2011a on.

Follow the instructions below to use the keycheck utility:

Windows

========

1. Open a Windows Command Prompt by clicking on the Start Menu and selecting All Programs->Accessories->Command Prompt.

2. Change directory into the $MATLAB\etc\$ARCH folder, ex:

 C:\> cd "Program Files\MATLAB\R2010b\etc\win32"

3. Run the program "keycheck.exe" with the "-file" flag and the path to the license file to be scanned, ex:

 C:\Program Files\MATLAB\R2010b\etc\win32>  keycheck.exe -file ..\license.dat

Unix/Linux/Mac OS X

==============

1. Open a terminal window (Application->Utilities->Terminal on Mac OS X)

2. Change into the $MATLAB\etc\$ARCH directory, ex:

 [licserver:~] % cd /usr/local/MATLAB/R2010b/glnxa64/

3. Run the "keycheck" binary with the "-file" flag and the path of the license file to be scanned, ex:

 [licserver:/usr/local/MATLAB/R2010b/etc/glnxa64] % ./keycheck -file ../license.dat

A successful validation will print the following message:

 Warning: This verification is being done against a license file and not a license server.
 This may not provide a complete verfication of the license.
 License verification test BadDateTest passed
 License verification test BadLicenseNumTest passed

A failed verification will provide details of the failing license keys, ex:

Warning: This verification is being done against a license file and not a license server.

This may not provide a complete verfication of the license.

License verification test BadDateTest failed

Found multiple entries for MATLAB

License number: 123456

Feature name: MATLAB

License verification test BadLicenseNumTest passed

1 failures found.

For assistance troubleshooting Keycheck license verification failures please contact Installation & Licensing support at the link below:

http://www.mathworks.com/support/contact_us/

Best Answer

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