Created attachment 189616 [details] I put an image of both the working filter (blur as an example) and the not working NTSC filter. *** If you're not sure this is actually a bug, instead post about it at https://discuss.kde.org If you're reporting a crash, attach a backtrace with debug symbols; see https://community.kde.org/Guidelines_and_HOWTOs/Debugging/How_to_create_useful_crash_reports Please remove this comment after reading and before submitting - thanks! *** SUMMARY A little bit ago, the NTSC filter was added for VHS like effect thanks to frei0r. However, it will not work with the rotoscope. It applies to the entire clip and ignore the roto mask apply filter. STEPS TO REPRODUCE 1. Add a clip 2. Add the roto 3. Use the roto to make an area 4. Add the NTSC filter 5. Add the "mask apply" filter. OBSERVED RESULT The entire clip boundaries is applied EXPECTED RESULT Only the rotoscoped area applies the effect OPERATING SYSTEMS I tested this with just kubuntu so far, it happens with both the AppImage and flatpak versions. ADDITIONAL INFORMATION I've attached two screenshots to show what I mean.