Error runing ffmpeg in Matlab function in linux

I download exemplarsvm code, the problem: when I run : [tmp,lenstring] = unix('/usr/bin/ffmpeg -i "/home/ly/Documents/movie/AVSS_AB_Easy_Divx.avi" 2>&1 | grep Duration') the return value is tmp = 1 lenstring = '' , lenstring is Empty. And when I jues run: /usr/bin/ffmpeg -i "/home/ly/Documents/movie/AVSS_AB_Easy_Divx.avi" 2>&1 | grep Duration in terminal, the result is " Duration: 00:03:38.96, start: 0.000000, bitrate: 4005 kb/s".

So I think Matlab doesnot call ffmpeg right. and I just: unix('fmpeg') in matlab.result: ffmpeg: error while loading shared libraries: libraw1394.so.8: cannot open shared object file: No such file or directory

ans =

127

Wat does it mean? How can I fix it? Thank you for any help!

Answer 1

[Kaustubha Govind]

What do you get when you just run:

>> [status,result] = unix('/usr/bin/ffmpeg -i "/home/ly/Documents/movie/AVSS_AB_Easy_Divx.avi" 2>&1')

It is possible that the system PATH and LD_LIBRARY_PATH are not set up correctly in the MATLAB session. Run the following commands in MATLAB and the system shell and compare the results:

In MATLAB:

>> getenv PATH
>> getenv LD_LIBRARY_PATH

In system shell:

$ printenv PATH
$ printenv LD_LIBRARY_PATH

[yan]

thank you! I have fixed it by:

ln -s /usr/lib/libraw1394.so.11.01 /usr/local/MATLAB/R2010b/sys/os/glnx86/libraw1394.so.8

Thank you for helping