[chimerax-users] Changing MD trajectory default frame rate

[Elaine Meng]

Hi Vis,
You should use the "coordset" command to play back the trajectory (not the GUI play button) and put it into a command script file along with the "movie" commands.  You can also include other commands in your script if you want other things to happen in the movie.

See "movie" and "coordset" commands:
<https://rbvi.ucsf.edu/chimerax/docs/user/commands/movie.html>
<https://rbvi.ucsf.edu/chimerax/docs/user/commands/coordset.html>

See the "making movies" page:
<https://rbvi.ucsf.edu/chimerax/docs/user/movies.html>

See the ChimeraX morphing highlight, which includes the command script used to record the morph trajectory (same approach would be used to record an MD trajectory):
<https://www.rbvi.ucsf.edu/chimerax/features.html#morphing>

More about command scripts (.cxc. files):
<https://rbvi.ucsf.edu/chimerax/docs/user/commands/usageconventions.html#cxc-files>

I hope this helps,
Elaine
-----
Elaine C. Meng, Ph.D.                       
UCSF Chimera(X) team
Department of Pharmaceutical Chemistry
University of California, San Francisco


> On Jan 12, 2023, at 12:10 PM, Visvaldas K. via ChimeraX-users <chimerax-users at cgl.ucsf.edu> wrote:
> 
> Dear all,
> 
> Is there a way to change frame rate when I hit that red "record" button when playing MD trajectory? 
> 
> I could do "movie record", but then it becomes interactive (I hit triangle "play", and then "movie encode /Users/visvaldas/Desktop/movie.mp4 framerate 5"),  so inadvertently can record  some undesired frames.
> 
> Of course I probably can reduce framerate using external programs, but how to that non-interactively in ChimeraX?
> 
> Best regards,
> 
> Vis