Tvheadend

I found the problem, reference from https://tvheadend.org/issues/3080
It is not the code bugs.
It is related with environment varibales.

Basically, Intel Media Server Studio let set the environment variables for using their SDK tool.
QSV encoding related variables are following.

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

MFX_HOME=/opt/intel/mediasdk
LIBVA_DRIVERS_PATH=/opt/intel/mediasdk/lib64
LIBVA_DRIVER_NAME=iHD
LD_LIBRARY_PATH=/usr/local/lib

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

But, TVHeadend do not use this environment variables, and use default values.
However, default value also various by how developer set the '--prefix' when build the libva.

System default, it is '/usr/lib/x86_64-linux-gnu/dri' folder, and driver name is 'i965-drv-video.so'.
So, I need to create symbolic links at the '/usr/lib/x86_64-linux-gnu/dri' (or '/usr/local/lib/dri')

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

ln -s /opt/intel/mediasdk/lib64/iHD_drv_video_so i965_drv_video.so
 ln -s /opt/intel/mediasdk/lib64/libmfxhw64-p.so.1.16 libmfxhw64.so
 ln -s /opt/intel/mediasdk/lib64/libmfxsw64-p.so.1.16 libmfxsw64.so

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

BTW, this is the workaround method to solve current problem. So I believe TVHeadend need to use the environment variables internally.

Thanks,

Also, you may add path to libraries from SDK to /etc/ld.so.conf or /etc/ld.so.conf.d/ ...

Jaroslav Kysela wrote:

Also, you may add path to libraries from SDK to /etc/ld.so.conf or /etc/ld.so.conf.d/ ...

1. set environment variables in /etc/environment file, it didn't work.
2. already set the library path to /etc/ld.so.conf.d/, but didn't work.
3. set environment variables in /etc/init.d/tvheadend script before execute the tvheadend binary, it also didn't work.

Any other options?

OK, I overlooked that you changed also .so names.

The libmfxhw64.so and libmfxsw64.so strings are hardcoded in libmfx we use from: https://github.com/lu-zero/mfx_dispatch , so you may report the problem there that the Intel SDK changed. You may also configure tvheadend to use another libmfx - use --disable-libmfx_static for the configure script and make sure that 'pkg-config --version libmfx' works for you.

LIBVA_DRIVERS_PATH and LIBVA_DRIVER_NAME are used in libva.so library. Again, tvheadend does not modify the environment variables, so they should be passed to libva unmodified. Eventually, libva library can read these variables from /etc/libva.conf .

Jaroslav Kysela wrote

OK, I overlooked that you changed also .so names.

Thanks for your kindly help. Yes, I understood this is not a TVHeadend problem.
However, some users - who try to build and install TVHeadend based on Intel's guideline - have same problem with me.
So I hope this record may help to them as like FAQ.

Thanks again.