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Sur d’autres sites (7252)
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How to send a camera capture frame to YouTube streaming using ffmpeg
2 mars 2024, par 유혜진import subprocess 
import cv2

# YouTube streaming settings
YOUTUBE_URL = "rtmp://a.rtmp.youtube.com/live2/"
KEY = "..."

# OpenCV camera setup
cap = cv2.VideoCapture(0)
cap.set(cv2.CAP_PROP_FRAME_WIDTH, 640)
cap.set(cv2.CAP_PROP_FRAME_HEIGHT, 480)

# FFmpeg command for streaming
command = [r"C:\utility\ffmpeg\ffmpeg-2024-02-22-git-76b2bb96b4-full_build\ffmpeg-2024-02-22-git-76b2bb96b4-full_build\bin\ffmpeg.exe",
 '-f', 'rawvideo',
 '-pix_fmt', 'bgr24',
 '-s', '640x480',
 '-i', '-',
 '-ar', '44100',
 '-ac', '2',
 '-acodec', 'pcm_s16le',
 '-f', 's16le',
 '-ac', '2',
 '-i', 'NUL', 
 '-acodec', 'aac',
 '-ab', '128k',
 '-strict', 'experimental',
 '-vcodec', 'h264',
 '-pix_fmt', 'yuv420p',
 '-g', '50',
 '-vb', '1000k',
 '-profile:v', 'baseline',
 '-preset', 'ultrafast',
 '-r', '30',
 '-f', 'flv', 
 f"{YOUTUBE_URL}/{KEY}",]

# Open a subprocess with FFmpeg
pipe = subprocess.Popen(command, stdin=subprocess.PIPE)

while True:
 # Read a frame from the camera
 ret, frame = cap.read()
 if not ret:
 break

 # Display the frame
 cv2.imshow('Frame', frame)
 cv2.waitKey(1) # Wait for 1ms

 # Send the frame through the pipe for streaming
 pipe.stdin.write(frame.tobytes())

 # Check for 'q' key press to stop streaming
 if cv2.waitKey(1) & 0xFF == ord('q'):
 break

# Release resources
cap.release()
cv2.destroyAllWindows()



I'm trying to implement capturing the camera screen using opencv and transmitting this frame to the YouTube streaming broadcast via ffmpeg. YouTube streaming does start when I run this code. However, it appears to be a black screen, not a camera screen. I don't see what the problem is.


I didn't even start streaming at first, but I changed the command option to various things, and when I ran the code, I succeeded in starting streaming. There are many references to transmitting mp4, but there are not many references to transmitting real-time capture. I'm going to process the camera screen using opencv and then send it to streaming. I don't know what the problem is. Please help me.


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