https://code.videolan.org/videolan/dav1d There is finally a software decoder for AV1, after many years of only hardware decoding. It's very difficult to compile, requiring yet another large build system, specific versions of nasm, yasm. It got stuck on some kind of checkasm.asm file. Upgrading nasm & yasm to the latest versions, deleting & recreating the build directory got it to compile. Av1d seems to be funded by alphabet corporation which requires them to use no less than a certain number of academic dependencies. ffmpeg has simply https://www.ffmpeg.org/general.html#dav1d --enable-libdav1d It requires package_cfg so you have to run 'ninja install;ldconfig' in dav1d-master/build. There's no local library option. The latest dav1d actually compiled with ffmpeg 5, but couldn't output any frames to Cinelerra. The standalone ffmpeg transcoded properly. It's proven easier to use ffmpe...