The video editor Flowblade is suffering from a black screen problem https://github.com/jliljebl/flowblade/issues/1134 and after a bit of digging, it appears that setting SDL12COMPAT_NO_QUIT_VIDEO fixes the issue.
I found SDL12COMPAT_NO_QUIT_VIDEO by luck while browsing the sdl12-compat source code. It should be documented in the README.
More precisely, Flowblade is using the "sdl" backend of the MLT Multimedia Framework https://www.mltframework.org/ so that issue may also affect other applications based on MLT.
The video editor Flowblade is suffering from a black screen problem https://github.com/jliljebl/flowblade/issues/1134 and after a bit of digging, it appears that setting SDL12COMPAT_NO_QUIT_VIDEO fixes the issue.
I found SDL12COMPAT_NO_QUIT_VIDEO by luck while browsing the sdl12-compat source code. It should be documented in the README.
More precisely, Flowblade is using the "sdl" backend of the MLT Multimedia Framework https://www.mltframework.org/ so that issue may also affect other applications based on MLT.