*** 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 *** SUMMARY When it tries to transcode a video from VFR to CFR via 'Lossy x264 | frame only', it doesn't do anything. STEPS TO REPRODUCE 1. Import any framerate with a variable framerate. 2. Kdenlive will say that this you need to transcode it into a constant framerate video. Let it transcode with 'Lossy x264 | frame only'. 3. Now let it transcode. OBSERVED RESULT The video makes a copy of itself, with the original name and the new framerate appended to it. Kdenlive automatically replaces the old one with the copy, but the framerate is completely unchanged, so it's still VFR. Kdenlive recognizes this, and tells you to transcode it to CFR, causing an unending cycle of failed transcoding. EXPECTED RESULT The video makes a copy of itself, with the original name and the new framerate appended to it. Kdenlive automatically replaces the old one with the copy, and since it's now CFR there are no more issues. SOFTWARE/OS VERSIONS Windows: Windows 11 Home, Build 22631 KDE Frameworks Version: Version 6.3.0 Qt Version: Version 6.7.1 (built against 6.7.1) ADDITIONAL INFORMATION CPU: AMD Ryzen 5 3600 GPU: Nvidia RTX 3060 RAM: 12 GB They also get bigger for some reason.
Oh, and if this helps, I have a .bat script to convert them myself. Here's the ffmpeg command if you're interested. ffmpeg -y -fflags +igndts -i input.video -filter:v fps=%new_fps% -fps_mode:v cfr -copytb 0 -c:v libx265 -crf 17 -tag:v hvc1 output.video Does re-encode it, but it works flawlessly on anything I throw at it.
Thanks for your report. This is in fact fixed for the 24.08 version. Would be great if you can test the daily build to confirm: https://cdn.kde.org/ci-builds/multimedia/kdenlive/release-24.08/windows/
Tested with the build and 'Lossy x264 | frame only', and it works perfectly! Thanks!