Video preview always in separate, non-resizeable window

[ExecutorElassus]

1. Flowblade version: 2.16.2
2. MLT version: 7.28.0
3. Distro: Gentoo Linux
4. X11 or Wayland: X11, I think?
5. Updated MLT to 7.28 (which is the first version I can get to work since 7.18). Python version is 3.12. Rebuilt flowblade from github repo.

When I now start flowblade, the video preview window is now always in its own window, with the video stream always occupying a space in the middle of the window, surrounded by a black background. If I try to resize the window, the video stream gets moved out of the edge of the window, and doesn't resize. Setting "Single Window" under the "View" menu does not change anything.

I'm downgrading mlt to 7.18 now to see if that fixes the issue. I'll post an update once it completes.

[ExecutorElassus]

Update: downgrading MLT to 7.18 (which also required recompiling flowblade so that both used python-3.11) worked around the issue.

[jliljebl]

For the time being you need to to set force_sdl2 = False in the editorstate.py. We are moving to use SDL 2 video display and I'm keeping the force_sdl2 = True to get maximum testing. Later we will require MLT 2.30 or higher to use SDL2 consumer.

[ExecutorElassus]

For the time being you need to to set force_sdl2 = False in the editorstate.py. We are moving to use SDL 2 video display and I'm keeping the force_sdl2 = True to get maximum testing. Later we will require MLT 2.30 or higher to use SDL2 consumer.

Is this still the case? Is Flowblade in a state where I can switch to using MLT>2.30 and SDL2?

[jliljebl]

Is this still the case? Is Flowblade in a state where I can switch to using MLT>2.30 and SDL2?

I'm currently running force_sdl2 = True with SDL 2 working and own bindings made from a commit after the patch that fixed SDL2 for Flowblade, you should be able to run repo code with MLT 2.30.

Next release is coming in about 6 weeks or sooner, and that will run with SDL2 for MLT >= 2.30 and with SDL1 with MLT <= 2.28.

[ExecutorElassus]

MLT, despite my setting it to build for python-3.12, is installing to the python-3.13 path, and flowblade can't find it. Also, MLT is set to use Qt5, which is deprecated. So … I'm probably going to have to file some issues on the MLT github, aren't I?
Thanks for the help.