FFmpeg compile it on kubuntu
March 11, 2012 3 Comments
SOME OPTION YOU SHOULD KNOW WELL
Something you should know If you see on the configure script Configure many times you see –enable-shared and –prefix=/usr/local/ why?
why you should use –prefix=/usr/local?
to avoid some problems with libraries, for example
you have installed libxyz from a debian package, if you install a new version it will be overwrite from your installation (manually compiled.)
the most of configure script has this –prefix=/usr/local option because of /usr/local/bin has higher priority on /usr/bin in the case of binary .
so for example we can have
if you type on konsole script it will be loaded the one that is on the folder /usr/local/bin/
When should i use –enable-shared
Software like kdenlive use ffmpeg so they need to know where libraries are in order to use them … so YOU NEED TO ENABLE THIS OPTION , if you don’t kdenlive will use the SYSTEM FFMPEG that typically is installed on /usr/bin…. so kdenlive will not use the new ffmpeg.. with the newest features… on /usr/local but there is more one thing …
with “shared” option you could get errors if you have installed via sudo apt-get install ffmepg like
error while loading shared libraries: libavutil.so.50: cannot open shared object file: No such file or directory
try this to solve.
sudo apt-get remove –-purge ffmpeg libavcodec-unstripped-52 libavdevice-unstripped-52 libavformat-unstripped-52 libavutil-unstripped-49 libpostproc-unstripped-51 libswscale-unstripped-0
So and if i want test newest ffmpeg ? and keep the system ffmpeg ?
OF course you can ….
1 install the ffmpeg with sudo apt-get install ffmpeg
2 compile your ffmpeg without –enable-shared and with –prefix=/usr/loca/
3 if you have compiled here $HOME/src/ffmpeg/ffmpeg DO NOT RUN sudo make install , test it with
4 now that your ffmpeg works fine you can save it and use it from konsole without problems just edit this
add this line
update the bashrc for the current terminal with
now type this🙂
now your system will use tffmpeg🙂
HOW To FIX FFMPEG on Kubuntu 12.04 system COMPILING
https://nowardev.wordpress.com/2012/02/07/ffmpeg-12-04/ note that i have not used enable-shared and usr/local
HOW To FIX FFMPEG on Kubuntu 12.10 system COMPILING
https://nowardev.wordpress.com/2012/06/22/ffmpeg-12-10/ note that i have not used enable-shared and usr/local