cv2.VideoCapture 及 ffmpeg 打开视频流-Toy模板网

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安装ffmpeg: windows电脑FFmpeg安装教程手把手详解

一 cv2.VideoCapture打开视频流

rtsp_url = 'rtsp://10.0.58.253:9090/dss/monitor/param?cameraid=1003517%2418&substream=1'
cap = cv2.VideoCapture(rtsp_url)

while True:
    ret, frame = cap.read()
    if ret:
        cv2.imshow('frame', frame)
        key = cv2.waitKey(1)
        if key == ord('s'):
            print('img_shape:', frame.shape)
        elif key == ord('q'):
            break
    else:
        print('Failed to read frame')
        break

cap.release()
cv2.destroyAllWindows()

二 ffmpeg打开视频流

安装ffmpeg

pip install ffmpeg-python

运行ffmpeg:文章来源地址https://www.toymoban.com/news/detail-522207.html

import ffmpeg
import numpy as np
import cv2

camera = 'rtsp://10.0.58.253:9090/dss/monitor/param?cameraid=1003411%2417&substream=1'

probe = ffmpeg.probe(camera)
video_stream = next((stream for stream in probe['streams'] if stream['codec_type'] == 'video'), None)
width = int(video_stream['width'])
height = int(video_stream['height'])

out = (
    ffmpeg
        .input(camera, rtsp_transport='tcp')
        .output('pipe:', format='rawvideo', pix_fmt='bgr24', loglevel="quiet", r=25)
        .run_async(pipe_stdout=True)
)
cnt_empty = 0
while True:
    in_bytes = out.stdout.read(height * width * 3)
    if not in_bytes:
        cnt_empty += 1
        if cnt_empty > 10:
            break
    cnt_empty = 0
    frame = np.frombuffer(in_bytes, dtype=np.uint8).reshape(height, width, 3)
    # to process frame
    cv2.imshow('test', frame)
    if cv2.waitKey(1) & 0xFF == ord('q'):
        break

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