kdenlive-19.03.70-34672a1-x86_64.appimage eats all memory, crashes system due to swapping

[Harald Albrecht]

Urgh, this is a really bad experience -- didn't thought that kdenlive 
refactoring nightly might be this bad. The 
https://binary-factory.kde.org/job/Kdenlive_Nightly_Appimage_Build/lastSuccessfulBuild/artifact/kdenlive-19.03.70-34672a1-x86_64.appimage 
ate all my 16G RAM after loading an existing project so fast, so when I 
realized, my system was already dead due to heavy swapping and I had to 
hard reset it. Something I definitely don't like.

Other things I noticed before my system was killed by an video editor, 
off my head as I don't intend to try another refactoring nightly before 
long, as I need my system:

- critical: eating all available 16GB, going nuts, when starting 
timeline preview rendering. requires system hard reset, due to heavy 
swapping. at least, preview rendering itself not crashing anymore, but, 
erm ... pyrrhic.

- major: frei0r.scale0tilt still missing.

- major: audio clip playback unreliable; reproducible on projects some 
of the audio clips won't playback anything, despite the project is 
correct and works on stable.

.major: locked/unlocked track icon indistinguishable. Can you spot the 
difference easily while working on a larger project on a 20" 2560x1440 
19:6 display? Yes, I can choose an annoying and distracting high 
contrast color scheme. But that's bad for work. Why not use the older, 
yet clearly distinguishable icons which there designed exactly for this 
purpose? Is this design over function, kind of Apple video editor?

- major: I need to learn to slowly and precisely navigate in the 
timeline in order to either correctly hit a transition or the clip for 
setting either clip or transition properties. Or I need to constantly 
resize tracks just in order to work efficiently again. The old design 
allowed me a much quicker and yet precised work in the timeline. The 
transition height as well as position needs some tweaking? Try that with 
collapsed tracks...

- minor: timecode overlay in monitor uses non-fixed font, so it changes 
width, jerking around annoyingly when playing clips or timeline.

- minor: timecode barely readable. Try to find that on a 20" 2560x1440 
19:6 display.

- minor: is that a transition on the audio clip??

- minor: where can I set all tracks to "all frames" thumbnails instead 
of having to check each track individually?

- minor: timeline clip context menu missing all icons.

- minor: project bin icons distorted

- minor: yet very annoying: appimage doesn't pick up the correct KDE 
style as set in my session, but instead comes with its own one.


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