Can't start blender on Ubuntu 17.04 zetsy

Question

When I tried to run Blender3D nothing happens. On terminal the output is:

blender: error while loading shared libraries: libavcodec-ffmpeg.so.56: cannot open shared object file: No such file or directory

libavcodec-extra57 already installed on my system. I tried to uninstall, install libavcodec, blender3d. Nothing changed.

PS:I am using this system since 15.04, I may have messed up libav or system settings compiling/using/programing opencv.

Answer 1

Solved. All I did was:

sudo nano /etc/ld.so.conf.d/blender.conf

and add below to the this file

/usr/lib/x86_64-linux-gnu/

after I run

sudo ldconfig 

Then blender starts normally.

Thanks for your help.

Answer 2

Blender was built and linked against the library named libavcodec-ffmpeg.so.56 which isn't there. The 56 at the end is the version which is one older than what you now have installed.

You can try creating a link with that name that points to the v57 version you have installed. ln -s /usr/local/lib/libavcodec-ffmpeg.so.57 /usr/local/lib/libavcodec-ffmpeg.so.56. If you don't have the exact filename libavcodec-ffmpeg.so.57 try something similar, maybe libavcodec-extra.so.57 For small version changes that may work, larger variations are more likely to fail.

Find a third party repository that has blender built against libavcodec v57. Or one that has libavcodec v56.

If you can find a copy of libavcodec-ffmpeg.so.56 and don't want to replace over your existing libavcodec version, you should be able to create a lib dir next to the blender binary and place it in there, this will be easier if you have a self contained copy of blender rather than a system installed copy.

If you do have libavcodec-ffmpeg.so.56 installed then it may be a case of not being able to find it, setting LD_LIBRARY_PATH in your environment can fix that.

Build blender yourself, which will always be linked with libraries you have installed.