Build and use AV1 on ffmpeg:
==============================
I use Intel + Netflix created SVT-AV1. There is an older libaom codec that I don't use.

To use:
--------
ffmpeg  -i A.mkv -acodec flac -compression_level 8 -ac 2 -vcodec libsvtav1 B.mkv

Install (Kubuntu 23.04):
--------------------------
Can now just easily install by:
sudo apt install svt-av1 ffmpeg








To build:
----------
First you have to build SVT-AV1, then you rebuild ffmpeg to include it.

Build SVT-AV1:
git clone https://gitlab.com/AOMediaCodec/SVT-AV1.git
cd SVT*
ls
cmake .
make -j"$(nproc)"
sudo make install

Then clone and cd into ffmpeg git.

git clone https://git.ffmpeg.org/ffmpeg.git ffmpeg
cd ffmpeg
./configure --enable-libsvtav1 --enable-gpl --enable-libx265 --disable-vdpau
(You can also add other configure pramaters from other parts of my website).
make -j"$(nproc)"
sudo  make install

*There will be a glitch where it cant find a so.1 file when running, use this two step process to fix:
1.
ln -s /usr/local/lib/libSvtAv1Enc.so.1 /usr/lib64/libSvtAv1Enc.so.1

2.
sudo nano /etc/ld.so.conf

include ld.so.conf.d/*.conf
/usr/lib
/usr/local/lib

use Ctrl + X to save

sudo ldconfig

It should work now.



------------------------------------------------------------------------
Sources:
https://trac.ffmpeg.org/wiki/Encode/AV1
https://stackoverflow.com/questions/17504888/ffmpeg-error-while-loading-shared-libraries-libmp3lame-so-0-cannot-open-share
https://gitlab.com/AOMediaCodec/SVT-AV1/-/tree/master
https://tecadmin.net/ffmpeg-error-loading-shared-libraries-libavdevice-55-open-shared-object-file-file-directory/

Date: June 6th 2022 ~  August 26th 2023