0

I am trying to create 2 recordings at the same time from one webcam. A low resolution video that i can use to train a neural network, and a higher resolution video for me to label data for my training. Does anyone know of any software i can use to do this that is light enough to be run on a raspberry Pi?

0

You can do this using python's opencv. See snippet below.

import cv2
import numpy as np

# Create a VideoCapture object
cap = cv2.VideoCapture(0)

# Check if camera opened successfully
if (cap.isOpened() == False): 
  print("Unable to read camera feed")

# Default resolutions of the frame are obtained.The default resolutions are system dependent.
# We convert the resolutions from float to integer.
frame_width = int(cap.get(3))
frame_height = int(cap.get(4))

# Define the codec and create VideoWriter object.The output is stored in 'outpy.avi' file.
out = cv2.VideoWriter('output1.avi',cv2.VideoWriter_fourcc('M','J','P','G'), 10, (frame_width,frame_height))
out2 = cv2.VideoWriter('output2.avi',cv2.VideoWriter_fourcc('M','J','P','G'), 10, (640,480))

while(True):
  ret, frame = cap.read()

  if ret == True: 

    # Write the frame into the file 'output.avi'
    out.write(frame)
    out2.write(frame)

    # Display the resulting frame    
    cv2.imshow('frame',frame)

    # Press Q on keyboard to stop recording
    if cv2.waitKey(1) & 0xFF == ord('q'):
      break

  # Break the loop
  else:
    break 

# When everything done, release the video capture and video write objects
cap.release()
out.release()
out2.release()

# Closes all the frames
cv2.destroyAllWindows() 

Your Answer

By clicking “Post Your Answer”, you agree to our terms of service, privacy policy and cookie policy

Not the answer you're looking for? Browse other questions tagged or ask your own question.