https://github.com/blaisefaint/blender_render_cameras_ver0
Revising a Python Script to create an add-on for Blender 3.4.1: Yesterday, you revised a Python script to create an add-on for Blender 3.4.1 to render multiple cameras. Here is the code:
bl_info = {
"name": "Render Cameras ver 1",
"blender": (3, 4, 1),
"category": "Render",
}
import bpy
class RenderCamerasOperator(bpy.types.Operator):
"""Renders the animation for each camera in the scene"""
bl_idname = "render.render_cameras"
bl_label = "Render Cameras"
def execute(self, context):
# Get the current settings
frame_start = bpy.context.scene.frame_start
frame_end = bpy.context.scene.frame_end
file_format = bpy.context.scene.render.image_settings.file_format
encoding_container = bpy.context.scene.render.ffmpeg.format
video_codec = bpy.context.scene.render.ffmpeg.codec
color_depth = bpy.context.scene.render.image_settings.color_mode
output_dir = bpy.context.scene.render.filepath
# Get the file name
file_name = bpy.path.basename(bpy.context.blend_data.filepath)
# Find the first object with an action
first_object = None
for obj in bpy.data.objects:
if obj.animation_data is not None and obj.animation_data.action is not None:
first_object = obj
break # No need to keep searching, so we can exit the loop
# Get the action name
action_name = first_object.animation_data.action.name if first_object else ""
# Save the first camera to use later
first_camera = None
# Render each camera in the scene
for camera_obj in bpy.data.objects:
if camera_obj.type == 'CAMERA':
# Save the first camera
if first_camera is None:
first_camera = camera_obj
# Set the active camera
bpy.context.scene.camera = camera_obj
# Set the output file name
bpy.context.scene.render.filepath = f"{output_dir}{action_name} {file_name} {camera_obj.name} "
# Set the frame range
bpy.context.scene.frame_start = frame_start
bpy.context.scene.frame_end = frame_end
# Set the other rendering options
bpy.context.scene.render.image_settings.file_format = file_format
bpy.context.scene.render.ffmpeg.format = encoding_container
bpy.context.scene.render.ffmpeg.codec = video_codec
bpy.context.scene.render.image_settings.color_mode = color_depth
# Render the scene and save the output
bpy.ops.render.render(animation=True, write_still=True)
# Set the active camera to the first camera
bpy.context.scene.camera = first_camera
return {'FINISHED'}
class RenderCamerasPanel(bpy.types.Panel):
"""Creates a panel with a button to render the animation for each camera in the scene"""
bl_label = "Render Cameras"
bl_idname = "RENDER_PT_render_cameras"
bl_space_type = 'PROPERTIES'
bl_region_type = 'WINDOW'
bl_context = "render"
def draw(self, context):
layout = self.layout
layout.operator(RenderCamerasOperator.bl_idname)
def register():
bpy.utils.register_class(RenderCamerasOperator)
bpy.utils.register_class(RenderCamerasPanel)
bpy.types.RENDER_PT_output.append(RenderCamerasPanel)
def unregister():
bpy.types.RENDER_PT_render.remove(RenderCamerasPanel)
bpy.utils.unregister_class(RenderCamerasPanel)
bpy.utils.unregister_class(RenderCamerasOperator)
if __name__ == "__main__":
register()
To use this script as an add-on in Blender 3.4.1, you will need to save it in a file with a .py extension and then install it as an add-on in Blender.
To install the add-on in Blender, follow these steps:
Open Blender.
Go to Edit > Preferences.
In the Preferences window, go to the Add-ons tab.
Click the Install... button.
In the file browser, navigate to the location where you saved the script and select it.
Click the Install Add-on from File... button.
The add-on should now be installed. You can check if it was installed correctly by going to the Add-ons tab in the Preferences window and searching for "Render Cameras" in the search box.
To use the add-on, go to the Render tab in the Properties window and look for the "Render Cameras" panel. Click the "Render Cameras" button to render the animation for each camera in the scene.
Thank you. I have already installed the add-on. Unfortunately, it has an unintended consequence. It modifies the Output Path to include the name of the file, so that if I run it twice, the output has information from the previous output. To avoid this, please add a block of code near the end after the output has been generated to remove the file information from the Output path, leaving the directory information as it was at the start.
You can modify the script to reset the output file path after the rendering is finished. Here is how you can do that:
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# Reset the output file path
bpy.context.scene.render.filepath = output_dir
You can add this line of code after the for loop that iterates over the cameras and renders the scene. This will reset the output file path to the original value that was saved at the beginning of the script.
Here is the modified script:
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bl_info = {
"name": "Render Cameras ver 1",
"blender": (3, 4, 1),
"category": "Render",
}
import bpy
class RenderCamerasOperator(bpy.types.Operator):
"""Renders the animation for each camera in the scene"""
bl_idname = "render.render_cameras"
bl_label = "Render Cameras"
def execute(self, context):
# Get the current settings
frame_start = bpy.context.scene.frame_start
frame_end = bpy.context.scene.frame_end
file_format = bpy.context.scene.render.image_settings.file_format
encoding_container = bpy.context.scene.render.ffmpeg.format
video_codec = bpy.context.scene.render.ffmpeg.codec
color_depth = bpy.context.scene.render.image_settings.color_mode
output_dir = bpy.context.scene.render.filepath
# Get the file name
file_name = bpy.path.basename(bpy.context.blend_data.filepath)
# Find the first object with an action
first_object = None
for obj in bpy.data.objects:
if obj.animation_data is not None and obj.animation_data.action is not None:
first_object = obj
break # No need to keep searching, so we can exit the loop
# Get the action name
action_name = first_object.animation_data.action.name if first_object else ""
# Save the first camera to use later
first_camera = None
# Render each camera in the scene
for camera_obj in bpy.data.objects:
if camera_obj.type == 'CAMERA':
# Save the first camera
if first_camera is None:
first_camera = camera_obj
# Set the active camera
bpy.context.scene.camera = camera_obj
# Set the output file name
bpy.context.scene.render.filepath = f"{output_dir}{action_name} {file_name} {camera_obj.name} "
# Set the frame range
bpy.context.scene.frame_start = frame_start
bpy.context.scene.frame_end = frame_end
# Set the other rendering options
bpy.context.scene.render.image_settings.file_format = file_format
bpy.context.scene.render.ffmpeg.format = encoding_container
bpy.context.scene.render.ffmpeg.codec
Unfortunately, your response was truncated. Please continue after " bpy.context.scene.render.ffmpeg.codec":
I apologize for the truncation. Here is the rest of the script:
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= video_codec
bpy.context.scene.render.image_settings.color_mode = color_depth
# Render the scene and save the output
bpy.ops.render.render(animation=True, write_still=True)
# Set the active camera to the first camera
bpy.context.scene.camera = first_camera
# Reset the output file path
bpy.context.scene.render.filepath = output_dir
return {'FINISHED'}
class RenderCamerasPanel(bpy.types.Panel):
"""Creates a panel with a button to render the animation for each camera in the scene"""
bl_label = "Render Cameras"
bl_idname = "RENDER_PT_render_cameras"
bl_space_type = 'PROPERTIES'
bl_region_type = 'WINDOW'
bl_context = "render"
def draw(self, context):
layout = self.layout
layout.operator(RenderCamerasOperator.bl_idname)
def register():
bpy.utils.register_class(RenderCamerasOperator)
bpy.utils.register_class(RenderCamerasPanel)
bpy.types.RENDER_PT_output.append(RenderCamerasPanel)
def unregister():
bpy.types.RENDER_PT_render.remove(RenderCamerasPanel)
bpy.utils.unregister_class(RenderCamerasPanel)
bpy.utils.unregister_class(RenderCamerasOperator)
This modified script should reset the output file path after the rendering is finished, so that the output path is not modified when the add-on is run multiple times.
This works as expected. Thank you.
You're welcome! I'm glad that I could help. If you have any other questions or need further assistance, please don't hesitate to ask.
