Using https://openexr.com/en/latest/HelloWorld.html as example so for now I have base commit d51dc1ff2dbd920c6488af4380b8064c9b6a7b4c (origin/master, origin/HEAD) Author: Good Guy <[email protected]> Date: Tue Aug 29 20:20:10 2023 -0600 Credit Andrew - rest of fix for Arch (and termux) which includes thirdparty/Makefile plus commit afa6a601fd3228be18aef413061b3d0165344d7c (HEAD -> master) Author: Andrew Randrianasulu <[email protected]> Date: Wed Aug 30 07:27:57 2023 +0300 Fileext reading error handling for bg render commit cac447973db936f7d5594c83521c34f3e5a9c187 Author: Andrew Randrianasulu <[email protected]> Date: Wed Aug 30 05:27:10 2023 +0300 Add libjpeg dep to.libtiff in thirdparty/Makefile commit 8297b38e49da0ce73e119138c158e806eb1fb45d Author: Andrew Randrianasulu <[email protected]> Date: Wed Aug 30 02:48:47 2023 +0300 Possible fix for ffmpeg 4.4 in pluginfclient.C ==== so, ffmpeg 5.1 based cin seems to work on Slackware 15.0 i586 (with some self-build packages). Tested adding ffmpeg video filter to video track, and of course background render with on-the-fly compressor switch. aggrh, in commit message fileert instead of fileexr. I hope this is not a big problem will try my virtual machines next