After I upgraded to Firefox 50, a new warning message started to be displayed for some of the videos (or animated gifs) that I tried to play or load. The actual text message is libavcodec may be vulnerable or is not supported, and should be updated to play video. The obsolete versions are those prior to 54.35.1.
Having seen this I checked for the avaiable libav version in the repositories, but sadly a newer one was not available for trusty. So I downloaded the sources for the last available libav (version 12) library, compiled and installed it.
After the install libavcodec.so -> libavcodec.so.57.25.0, libavcodec.so.57 -> libavcodec.so.57.25.0 and libavcodec.so.57.25.0 are available inside /usr/local/lib.
I created a new conf file for /usr/local/lib inside /etc/ld.so.conf.d/, executed ldconfig as root and then tried againg to see if the warning message is not displayed anymore. But unfortunately the problem still persists.
The question is, after I installed the latest version of libavcodec, and the corresponding .so files are available, why are they not detected? I mean, ok, the obsolete version is available inside /usr/lib/x86_64-linux-gnu, but shouldn't the newer version preside?
What am I missing?
