Any way to reduce the camera lag in python OpenCV?

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On running the script, the camera works and I am able to get the video, but the video output is very slow.
There's very much time difference in between the frames causing a laggy video output on the screen.

Is there any way to reduce the lag and increase the Frame Rate?

Here's the code I'm using:

import cv2

import time



t = time.time()

frames = 0

while True:

    frames += 1

    video = cv2.VideoCapture(0)

    check, frame = video.read()



    print(frame)



    frame = cv2.flip(frame, 1, 0)

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    cv2.imshow("LIVE", gray)

    key = cv2.waitKey(1)

    if key == ord('q'):

        break



video.release()

print("Frame Rate = ", end="")

print((time.time()-t) / frames)

I expected a frame rate of around 24-25, but I am getting frame rate of around 1.76 .

asked Jan 3 at 9:09

idaljeetsingh

1

What camera? What computer? What OS? Which OpenCV version? How are you displaying the image?

– Mark Setchell
Jan 3 at 9:23

2

video = cv2.VideoCapture(0) should be outside of the while loop, just right before the while loop.

– Ha Bom
Jan 3 at 9:23

@HaBom thanks that helped... The video is smooth now.. But now, the output in console is coming "Frame Rate = 0.050371124033342325 ".. which is inaccurate ..

– idaljeetsingh
Jan 3 at 9:29

@idaljeetsingh because the t = time.time() should be inside the while loop, just right at the beginning of the while loop.

– Ha Bom
Jan 3 at 9:35

@HaBom if it will be inside the loop it will give even less output as on last iteration, the time will be very-very close to the time of frame rate calculation at [ print((time.time()-t) / frames)]

– idaljeetsingh
Jan 3 at 9:40

|
show 2 more comments

Is there any way to reduce the lag and increase the Frame Rate?

Here's the code I'm using:

import cv2

import time



t = time.time()

frames = 0

while True:

    frames += 1

    video = cv2.VideoCapture(0)

    check, frame = video.read()



    print(frame)



    frame = cv2.flip(frame, 1, 0)

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    cv2.imshow("LIVE", gray)

    key = cv2.waitKey(1)

    if key == ord('q'):

        break



video.release()

print("Frame Rate = ", end="")

print((time.time()-t) / frames)

I expected a frame rate of around 24-25, but I am getting frame rate of around 1.76 .

asked Jan 3 at 9:09

idaljeetsingh

1

What camera? What computer? What OS? Which OpenCV version? How are you displaying the image?

– Mark Setchell
Jan 3 at 9:23

2

video = cv2.VideoCapture(0) should be outside of the while loop, just right before the while loop.

– Ha Bom
Jan 3 at 9:23

@HaBom thanks that helped... The video is smooth now.. But now, the output in console is coming "Frame Rate = 0.050371124033342325 ".. which is inaccurate ..

– idaljeetsingh
Jan 3 at 9:29

@idaljeetsingh because the t = time.time() should be inside the while loop, just right at the beginning of the while loop.

– Ha Bom
Jan 3 at 9:35

@HaBom if it will be inside the loop it will give even less output as on last iteration, the time will be very-very close to the time of frame rate calculation at [ print((time.time()-t) / frames)]

– idaljeetsingh
Jan 3 at 9:40

|
show 2 more comments

Is there any way to reduce the lag and increase the Frame Rate?

Here's the code I'm using:

import cv2

import time



t = time.time()

frames = 0

while True:

    frames += 1

    video = cv2.VideoCapture(0)

    check, frame = video.read()



    print(frame)



    frame = cv2.flip(frame, 1, 0)

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    cv2.imshow("LIVE", gray)

    key = cv2.waitKey(1)

    if key == ord('q'):

        break



video.release()

print("Frame Rate = ", end="")

print((time.time()-t) / frames)

I expected a frame rate of around 24-25, but I am getting frame rate of around 1.76 .

asked Jan 3 at 9:09

idaljeetsingh

Is there any way to reduce the lag and increase the Frame Rate?

Here's the code I'm using:

import cv2

import time



t = time.time()

frames = 0

while True:

    frames += 1

    video = cv2.VideoCapture(0)

    check, frame = video.read()



    print(frame)



    frame = cv2.flip(frame, 1, 0)

    gray = cv2.cvtColor(frame, cv2.COLOR_BGR2GRAY)

    cv2.imshow("LIVE", gray)

    key = cv2.waitKey(1)

    if key == ord('q'):

        break



video.release()

print("Frame Rate = ", end="")

print((time.time()-t) / frames)

I expected a frame rate of around 24-25, but I am getting frame rate of around 1.76 .

python opencv

asked Jan 3 at 9:09

idaljeetsingh

asked Jan 3 at 9:09

idaljeetsingh

asked Jan 3 at 9:09

idaljeetsingh

asked Jan 3 at 9:09

idaljeetsingh

asked Jan 3 at 9:09

idaljeetsingh

1

What camera? What computer? What OS? Which OpenCV version? How are you displaying the image?

– Mark Setchell
Jan 3 at 9:23

2

video = cv2.VideoCapture(0) should be outside of the while loop, just right before the while loop.

– Ha Bom
Jan 3 at 9:23

@HaBom thanks that helped... The video is smooth now.. But now, the output in console is coming "Frame Rate = 0.050371124033342325 ".. which is inaccurate ..

– idaljeetsingh
Jan 3 at 9:29

@idaljeetsingh because the t = time.time() should be inside the while loop, just right at the beginning of the while loop.

– Ha Bom
Jan 3 at 9:35

@HaBom if it will be inside the loop it will give even less output as on last iteration, the time will be very-very close to the time of frame rate calculation at [ print((time.time()-t) / frames)]

– idaljeetsingh
Jan 3 at 9:40

|
show 2 more comments

1

What camera? What computer? What OS? Which OpenCV version? How are you displaying the image?

– Mark Setchell
Jan 3 at 9:23

2

video = cv2.VideoCapture(0) should be outside of the while loop, just right before the while loop.

– Ha Bom
Jan 3 at 9:23

@HaBom thanks that helped... The video is smooth now.. But now, the output in console is coming "Frame Rate = 0.050371124033342325 ".. which is inaccurate ..

– idaljeetsingh
Jan 3 at 9:29

@idaljeetsingh because the t = time.time() should be inside the while loop, just right at the beginning of the while loop.

– Ha Bom
Jan 3 at 9:35

@HaBom if it will be inside the loop it will give even less output as on last iteration, the time will be very-very close to the time of frame rate calculation at [ print((time.time()-t) / frames)]

– idaljeetsingh
Jan 3 at 9:40

What camera? What computer? What OS? Which OpenCV version? How are you displaying the image?

– Mark Setchell
Jan 3 at 9:23

video = cv2.VideoCapture(0) should be outside of the while loop, just right before the while loop.

– Ha Bom
Jan 3 at 9:23

@HaBom thanks that helped... The video is smooth now.. But now, the output in console is coming "Frame Rate = 0.050371124033342325 ".. which is inaccurate ..

– idaljeetsingh
Jan 3 at 9:29

@idaljeetsingh because the t = time.time() should be inside the while loop, just right at the beginning of the while loop.

– Ha Bom
Jan 3 at 9:35

@HaBom if it will be inside the loop it will give even less output as on last iteration, the time will be very-very close to the time of frame rate calculation at [ print((time.time()-t) / frames)]

– idaljeetsingh
Jan 3 at 9:40

|
show 2 more comments

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