Build new intel GPU drivers and ffmpeg in ubuntu 21.10:
========================================================
*In ubuntu 20.04 or kde neon, you must get the libdrm-dev package by:

1.Add the following line to /etc/apt/sources.list:
deb http://archive.ubuntu.com/ubuntu/ focal-proposed main restricted universe multiverse

2. sudo apt-get update & sudo apt full-upgrade
    *Also reinstall the libpulse-dev libsdl2-dev plasma-pa pulseaudio-module-gsettings if removed from last upgrade.

3. sudo apt-get install libdrm-dev

Now can continue to the libva-utils github.


First, get libva-utils by:
git clone https://github.com/intel/libva-utils
cd libva-utils
then:
sudo ./autogen.sh
sudo make -j$(nproc)
sudo make install

Then get llbva by:
https://github.com/intel/libva
cd libva
./autogen.sh
make -j$(nproc)
sudo make install

Then get gmmlib by
git clone https://github.com/intel/gmmlib
cd gmmlib
mkdir build && cd build
cmake [-DCMAKE_BUILD_TYPE= Release] [-DARCH= 64] ..
make -j"$(nproc)"
sudo make install

Then get Intel(R) Media Driver for VAAPI
https://github.com/intel/media-driver
sudo apt install autoconf libtool libdrm-dev xorg xorg-dev openbox libx11-dev libgl1-mesa-glx libgl1-mesa-dev
(with the directory where the media_driver folder you just unziped is):
mkdir build_media && cd build_media
cmake ../media-driver
make -j"$(nproc)"
sudo make install

Then get MediaSDK by:
git clone https://github.com/Intel-Media-SDK/MediaSDK
cd msdk
mkdir build && cd build
cmake ..
make -j"$(nproc)"
sudo make install

Get FFMPEG 5+ by:
sudo apt purge ffmpeg
sudo apt-get -y install   autoconf   automake   build-essential   cmake   git-core   libass-dev   libfreetype6-dev   libgnutls28-dev   libmp3lame-dev   libsdl2-dev   libtool   libva-dev   libvdpau-dev libvorbis-dev libxcb1-dev libxcb-shm0-dev   libxcb-xfixes0-dev   meson   ninja-build   pkg-config   texinfo   wget   yasm   zlib1g-dev libunistring-dev libaom-dev libdav1d-dev nasm libx265-dev libvorbis-dev
git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg
cd ffmpeg
sudo ln -s /opt/intel/mediasdk/lib/pkgconfig/* /usr/local/lib/pkgconfig/
*libsvtav1 is only for if AV1 codec is included from other page.
./configure --enable-libmfx --enable-libsvtav1 --cpu=native --enable-vaapi --enable-nonfree --enable-opengl --enable-gpl --enable-libx265 --disable-vdpau --enable-libvorbis
make -j"$(nproc)"
sudo make install


Sources:
https://www.intel.com/content/www/us/en/developer/articles/technical/build-and-debug-open-source-media-stack.html
https://ffmpeg.org/download.html#repositories
https://trac.ffmpeg.org/wiki/Hardware/QuickSync
https://community.intel.com/t5/Media-Intel-oneAPI-Video/ffmpeg-libmfx-not-found/td-p/1139877
https://www.intel.com/content/www/us/en/developer/articles/technical/quick-start-on-integrating-ffmpeg-libraries.html?wapkw=ffmpeg%20
https://github.com/Intel-FFmpeg-Plugin/Intel_FFmpeg_plugins/wiki/
https://github.com/Intel-Media-SDK/MediaSDK
https://ubuntu.pkgs.org/20.04/ubuntu-proposed-main-amd64/libdrm-dev_2.4.110-1ubuntu1~20.04.1_amd64.deb.html
https://trac.ffmpeg.org/wiki/Encode/H.265
https://stackoverflow.com/questions/66382786/unknown-encoder-libx265-on-ubuntu-18-04

Date (OG): April 4th 2022
Date (UP 1): June 8th 2022
Date (UP 2): August 1st 2022
Date (UP 3): September 29th 2022
Date (UP 4)l October 16th 2022 (added --disable-vdpau for ffmpeg ./configure)