hi I wrote a simple script to take screenshots, but the frames are not updating in the screenshots i.e all screenshots are the same image (a single frame). I introduced a time delay in case blender having problem updating but the problem is still there
import bpy
import pyautogui
import time
c=1
while c<=50:
bpy.context.scene.frame_current =c
time.sleep(2)
path='D:\\Blender\\script_screenshot\\'+str(c)+'.png'
pyautogui.screenshot(path)
c=c+5
Blender doesn't update the GUI by default when a script is running. See Update viewport while running script
Add bpy.ops.wm.redraw_timer(type='DRAW_WIN_SWAP', iterations=1) after you change frames to update the GUI.
Also, you can take Blender screenshots with a BPY op like this bpy.ops.screen.screenshot( filepath=path, check_existing=False) so you might not need pyautogui.
import bpy
#import pyautogui
import time
c=1
while c<=50:
bpy.context.scene.frame_current =c
bpy.ops.wm.redraw_timer(type='DRAW_WIN_SWAP', iterations=1)
time.sleep(0.5)
path='C:\\tmp\\script_screenshot\\'+str(c)+'.png'
# pyautogui.screenshot(path)
bpy.ops.screen.screenshot( filepath=path, check_existing=False)
c=c+5
