SUMMARY I added 400 GiB worth of clips to project, and UI is frozen. Process Explorer shows that kdenlive is doing something (spawning ffmpeg processes). STEPS TO REPRODUCE 1. Add 400 clips (~400GiB of data) to project (not on timeline, but just to project bin) OBSERVED RESULT UI freezes EXPECTED RESULT UI should be responsive while kdenlive imports all files SOFTWARE/OS VERSIONS Microsoft Windows [Version 10.0.19041.928] ADDITIONAL INFORMATION Videos in question are recorded by OBS, and they have 4 audio streams: Input #0, matroska,webm, from '.\2020-04-19 11-47-55-00.00.00.000-00.00.16.971-1_-menu_loop.mkv': Metadata: ENCODER : Lavf58.45.100 Duration: 00:00:17.03, start: 0.000000, bitrate: 4830 kb/s Stream #0:0: Video: h264 (High), yuv420p(tv, bt470bg/unknown/unknown, progressive), 1920x1080 [SAR 1:1 DAR 16:9], 60 fps, 60 tbr, 1k tbn, 120 tbc (default) Metadata: DURATION : 00:00:17.033000000 Stream #0:1: Audio: aac (LC), 44100 Hz, stereo, fltp (default) Metadata: title : All DURATION : 00:00:16.974000000 Stream #0:2: Audio: aac (LC), 44100 Hz, stereo, fltp Metadata: title : Mikrofon DURATION : 00:00:16.974000000 Stream #0:3: Audio: aac (LC), 44100 Hz, stereo, fltp Metadata: title : Capture Card/Input Device DURATION : 00:00:16.974000000 Stream #0:4: Audio: aac (LC), 44100 Hz, stereo, fltp Metadata: title : System DURATION : 00:00:16.974000000
Thank you for reporting. This is a known issue as Kdenlive is importing all clips concurrent and this blocks the hard disk. We working on a way to import clips each by each see here: https://invent.kde.org/multimedia/kdenlive/-/issues/986. Workaround: drag/drop only 10-20 clips at ones. If you never mind I close this issue as we track it already here: https://bugs.kde.org/show_bug.cgi?id=407083 *** This bug has been marked as a duplicate of bug 407083 ***