I had a look at Williams patch but it tooks a lot more to adapt the code
for the changed API.
To get a feeling what has to be done you can have a look at
https://github.com/opencv/opencv/pull/21754/commits/5440fd6cb43ea65a056c46b691fcdab1a425e92d
where they patched cap_ffmpeg_impl.hpp (which was the base for my
implementation)
Nevertheless I took the latest version from the OpenCV 4.x branch and
applied my changes again to make it GNU Octave compatible.
See changes here https://sourceforge.net/p/octave/video/ci/default/tree/
currently tested distributions are:
PRETTY_NAME="Debian GNU/Linux 10 (buster)"
NAME="Debian GNU/Linux"
OCTAVE_VERSION = 4.4.1
FFmpeg_versions = Lavu56.22.100, SwS5.3.100, Lavc58.35.100,
Lavf58.20.100 <-- lowest supported
PRETTY_NAME="Debian GNU/Linux 11 (bullseye)"
NAME="Debian GNU/Linux"
OCTAVE_VERSION = 6.2.0
FFmpeg_versions = Lavu56.51.100, SwS5.7.100, Lavc58.91.100, Lavf58.45.100
PRETTY_NAME="Debian GNU/Linux 12 (bookworm)"
NAME="Debian GNU/Linux"
OCTAVE_VERSION = 7.3.0
FFmpeg_versions = Lavu57.28.100, SwS6.7.100, Lavc59.37.100, Lavf59.27.100
NAME=Fedora
VERSION="31 (Container Image)"
OCTAVE_VERSION = 5.1.0
FFmpeg_versions = Lavu56.31.100, SwS5.5.100, Lavc58.54.100, Lavf58.29.100
NAME=Fedora
VERSION="33 (Container Image)"
OCTAVE_VERSION = 5.2.0
FFmpeg_versions = Lavu56.51.100, SwS5.7.100, Lavc58.91.100, Lavf58.45.100
NAME="Fedora Linux"
VERSION="38 (Container Image)"
OCTAVE_VERSION = 7.3.0
FFmpeg_versions = Lavu58.2.100, SwS7.1.100, Lavc60.3.100, Lavf60.3.100
NAME="Ubuntu"
VERSION="20.04.6 LTS (Focal Fossa)"
OCTAVE_VERSION = 5.2.0
FFmpeg_versions = Lavu56.31.100, SwS5.5.100, Lavc58.54.100, Lavf58.29.100
PRETTY_NAME="Ubuntu 22.04.2 LTS"
NAME="Ubuntu"
OCTAVE_VERSION = 6.4.0
FFmpeg_versions = Lavu56.70.100, SwS5.9.100, Lavc58.134.100, Lavf58.76.100
PRETTY_NAME="Ubuntu 23.04"
NAME="Ubuntu"
OCTAVE_VERSION = 7.3.0
FFmpeg_versions = Lavu57.28.100, SwS6.7.100, Lavc59.37.100, Lavf59.27.100
it will take some days to get the new 2.1.0 release done and upload it
to octave-forge
Thank you, Andy
