I tried to start CinGG (ffmpeg7) in wayland. During startup I get this error: BC_DisplayInfo::gl_fb_config failed Error I don't have in Xorg. However, everything works normally. I've tried both X11 and X11-OpenGL driver, but I don't notice any difference. As a test I put in the chroma-key plugin and observed a strange behavior: now the threshold works from the value 40 instead of a value just above 0. Even going back into Xorg the same behavior remains. Why did it work correctly for me the first time and from the second test onwards the threshold seems to shift from 0 to 40? Anyway it is not important, I will do more tests but it is probably due to some mistake of mine. Instead, an important thing that I had noticed even before trying wayland, but forgot to report in the previous email is that the “Default” button returns the threshold to 10, as required. In contrast, the “Reset” button on the slider brings it back to 0. This difference can also be seen in chromakey.C : ChromaKeyConfig::ChromaKeyConfig() { reset(RESET_DEFAULT_SETTINGS); } void ChromaKeyConfig::reset(int clear) { switch(clear) { case RESET_ALL : red = 0.0; green = 0.0; blue = 0.0; threshold = 0.0; use_value = 0; slope = 0.0; break; case RESET_RGB : red = 0.0; green = 0.0; blue = 0.0; break; case RESET_SLOPE : slope = 0.0; break; case RESET_THRESHOLD : threshold = 0.0; break; case RESET_DEFAULT_SETTINGS : default: red = 0.0; green = 0.0; blue = 0.0; threshold = 10.0; use_value = 0; slope = 0.0; break; } } I think in each line that threshold appears the value should be raised to 10.0.