Okay, thank you very much Tom ! With best wishes, Enrico Il giorno mar 30 gen 2024 alle ore 19:55 Tom Goddard <goddard@sonic.net> ha scritto:
Hi Enrico,
The Mac probably produces a nicer quality video simply because the size is bigger in pixels if your Mac has a 4K or 5K display. If you don't specify a size in pixels for the movie frames with the movie record command then it just uses the size on the screen.
So the way to improve quality on a lower resolution display is to specify the movie frame size in pixels as in your example with the movie record command. You can make it bigger than 1920 by 1080 -- software that plays it back will scale it down to fit the playback window. I would not recommend "supersample 4" as that is going to make image capture 16 times slower. Usually I use no supersample, but if you like the little bit of smoothing it offers than use "supersample 3" (9 times slower image saving), you won't notice any difference with supersample 4.
Read the documentation. Your use of the movie encode command with the bitrate option has no effect because the quality option overrides it. As it says in the docs:
https://www.rbvi.ucsf.edu/chimerax/docs/user/commands/movie.html#encode
"When specified by the user, quality overrides qscale and bitrate (constant bit rate encoding)."
So use "quality highest" or "bitrate 25000" but not both.
One last suggestions is that if you are making your animation on a white background enable silhouette edges (in graphics toolbar), it gives a nicer appearance of the boundaries of objects.
Tom
On Jan 30, 2024, at 6:36 AM, Enrico Martinez via ChimeraX-users <chimerax-users@cgl.ucsf.edu> wrote:
Dear ChimeraX users!
I noticed that there is some difference in the quality of the molecular movies produced in Ubuntu or MacOSX environments.
Are there some tricks to improve the quality of the animation produced on ubuntu ? Here are the commands which produced the best results:
movie record size 1920,1080 supersample 4 movie encode format h264 quality higher bitrate 25000
how could I modify / add something more with the aim to obtain the best molecular animations ??
Yours sincerely
Enrico _______________________________________________ ChimeraX-users mailing list -- chimerax-users@cgl.ucsf.edu To unsubscribe send an email to chimerax-users-leave@cgl.ucsf.edu Archives: https://mail.cgl.ucsf.edu/mailman/archives/list/chimerax-users@cgl.ucsf.edu/