[Python] Python dev for motion-sensing game using Intel Realsense

I do not have yet access to a Realsense camera. Below is a code that should play back a recorded Realsense file.

import pyrealsense2 as rs
import numpy as np
import cv2

# Path to your .bag file (downloaded dataset or recorded yourself)
bag_file = "stairs.bag"

# Configure pipeline for playback
pipeline = rs.pipeline()
config = rs.config()
config.enable_device_from_file(bag_file, repeat_playback=False) # False = stop when file ends

# Enable depth and color streams
config.enable_stream(rs.stream.depth, rs.format.z16, 30)
config.enable_stream(rs.stream.color, rs.format.bgr8, 30)

# Start pipeline
pipeline.start(config)

try:
while True:
frames = pipeline.wait_for_frames()
depth_frame = frames.get_depth_frame()
color_frame = frames.get_color_frame()
if not depth_frame or not color_frame:
break

# Convert images to numpy arrays
depth_image = np.asanyarray(depth_frame.get_data())
color_image = np.asanyarray(color_frame.get_data())

# Colorize depth for visualization
depth_colormap = cv2.applyColorMap(cv2.convertScaleAbs(depth_image, alpha=0.03),
cv2.COLORMAP_JET)

# Show both depth and color
images = np.hstack((color_image, depth_colormap))
cv2.imshow("RealSense Playback", images)

# Exit on ESC key
if cv2.waitKey(1) == 27:
break

finally:
pipeline.stop()
cv2.destroyAllWindows()


I am getting an error as follows. "line 18, in pipeline.start(config) RuntimeError: Couldn't resolve requests"

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