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→Python
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=== Python ===
=== Python ===
Example demonstrating how to record a video from a facecam:
Example demonstrating how to record a video with a facecam:
<syntaxhighlight lang="python" line>
<syntaxhighlight lang="python" line>
#!/usr/bin/env python3.10
#!/usr/bin/env python3.10
# -*- coding: utf-8 -*-
# -*- coding: utf-8 -*-
import datetime
import cv2
import ctypes
import ffmpegcv
#set sleep to 1ms accuracy
winmm = ctypes.WinDLL('winmm')
winmm.timeBeginPeriod(1)
def configure_webcam(cam_id, width=1920, height=1080, fps=60):
cap = cv2.VideoCapture(cam_id, cv2.CAP_DSHOW)
if not cap.isOpened():
print(f"Error: Couldn't open webcam {cam_id}.")
return None
# Try to set each property
cap.set(cv2.CAP_PROP_FRAME_WIDTH, width)
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, height)
cap.set(cv2.CAP_PROP_FPS, fps)
# Read back the values
actual_width = cap.get(cv2.CAP_PROP_FRAME_WIDTH)
actual_height = cap.get(cv2.CAP_PROP_FRAME_HEIGHT)
actual_fps = cap.get(cv2.CAP_PROP_FPS)
print(f"Resolution set to: {actual_width}x{actual_height}")
print(f"FPS set to: {actual_fps}")
return cap
def getWebcamData():
global frame_width
global frame_height
print("opening webcam...")
camera = configure_webcam(1, frame_width, frame_height)
time_stamp = datetime.datetime.now().strftime('%Y-%m-%d %H-%M-%S')
file_name = time_stamp +'_output.avi'
video_writer = ffmpegcv.VideoWriter(file_name, 'h264', fps=freq)
while True:
grabbed = camera.grab()
if grabbed:
grabbed, frame = camera.retrieve()
video_writer.write(frame) # Write the video to the file system
frame = cv2.resize(frame, (int(frame_width/4),int(frame_height/4)))
cv2.imshow("Frame", frame) # show the frame to our screen
if cv2.waitKey(1) & 0xFF == ord('q'):
break
freq = 60
frame_width = 1920
frame_height = 1080
getWebcamData()
cv2.destroyAllWindows()
</syntaxhighlight>
</syntaxhighlight>