I've looked around online for this but it seems every source I find is dancing around the issue. I've created a build script so far that looks like this

  blender oop-blender-demo.blend -P model.py -- $1
  blender oop-blender-demo.blend -a

I want to add one more line that allows me to actually view the rendered animation like you can do in the blender app by going to Render --> Play Rendered Animation

Is there anyway to succinctly do this?


2 Answers 2


Call the operator

To Play Rendered Animation you call the operator. For example sake saved to a file scripts/playback.py

import bpy

To call the operator from command line

blender -P scripts/playback.py tests/demo.blend

The operator makes a command based on your User Preferences > Files > Animation Player settings. enter image description here

Which in the case for Internal Player will be something like

Executing command:
   '/../bin/blender -a -f 24 1.0 -s 0 -e 4 -j 1 /tmp/0000.png'

see blender command line arguments

The script that generates the command can be found in 2.79/scripts/startup/bl_operators/screen_play_rendered_anim.py

blender -a -s 1 -e 250 /path_to_rendered_frames/name_of_1st_frame.png
  • 2
    $\begingroup$ I think this could do with some explanation of how this works. $\endgroup$ Commented May 24, 2018 at 17:31
  • $\begingroup$ I agree but I didn't find any doc about that. I just copied/paste the command that pops in the console when you press "Play Rendered Animation". $\endgroup$
    – thibsert
    Commented May 24, 2018 at 17:47
  • $\begingroup$ trying to deconstruct this, I believe the 1 is the variable frame_start and 250 is frame_end. $\endgroup$
    – sf8193
    Commented May 24, 2018 at 18:51
  • $\begingroup$ @thibsert Unfortunately when running this command from command line it does not show the whole animation $\endgroup$
    – sf8193
    Commented May 24, 2018 at 19:02

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