Raspberry pie RTMP streaming local camera image

Catalog

1. install ffmpeg

2. install srs 

3. Push flow

4. receive

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1. install ffmpeg

Input  sudo apt-get install ffmpeg omxplayer

If the following error is displayed

You need to do it again sudo apt-get update

Then type... Again sudo apt-get install ffmpeg omxplayer

After successful installation , You can enter ffmpeg To view the , My current ffmpeg Version is 3.2.15

2. install srs 

srs You can deploy on other servers , It can also be deployed directly on raspberry pie ,srs Project address  GitHub - ossrs/srs: SRS is a simple, high efficiency and realtime video server, supports RTMP, WebRTC, HLS, HTTP-FLV and SRT.

Input after decompression

cd ./srs-3.0release/trunk

./configure && make

After execution, it will be compiled , The compilation process will output many things , The first part is already crowded , I intercepted the image that was successfully compiled

  The default port is 1935, If you want to change the port, you can enter vim ./conf/srs.conf Make changes

  I haven't made any changes here

  After input ./objs/srs -c conf/srs.conf

  Then type sudo iptables -I INPUT -p tcp --dport 1935 -j ACCEPT

• there 1935 It should be consistent with the port above you

3. Push flow

use python Written , need opencv, Other libraries do not need ,IP Just use raspberry pie locally IP（ If your srs Put it elsewhere and use srs Of the device IP）, The port is also srs The port of , hinder /live/test You can customize

import cv2
import subprocess as sp

cam = cv2.VideoCapture(0)
img_counter = 0
ret, frame = cam.read()
WIDTH = frame.shape[1]
HEIGHT = frame.shape[0]
RTMP_URL = 'rtmp://192.168.33.68:1935/live/test'
FPS = 24

def ffpemgtortmp(width, height, recivedrtmp_addr, fps):
    print(recivedrtmp_addr)
    command = ['ffmpeg',
               '-y',
               '-f', 'rawvideo',
               '-vcodec', 'rawvideo',
               '-pix_fmt', 'bgr24',
               '-s', "{}x{}".format(width, height),
               '-r', str(fps),
               '-i', '-',
               '-c:v', 'libx264',
               '-pix_fmt', 'yuv420p',
               '-preset', 'ultrafast',
               '-f', 'flv',
               recivedrtmp_addr]
    print('command', command)
    p = sp.Popen(command, stdin=sp.PIPE)
    return p

def main():
    p = ffpemgtortmp(WIDTH, HEIGHT, RTMP_URL, FPS)
    while cam.isOpened():
        ret, frame = cam.read()
        p.stdin.write(frame.tostring())
        print('send frame')

if __name__ == '__main__':
    main()

If it's always there send frame It means that streaming is successful

4. receive

• The receiving end should be under the same intranet as raspberry pie

I am here windows use VLC The player receives

Click the media in the upper left corner , Open Network Stream  

Enter the address pushed in raspberry pie , Then click play  

After a while, the image of your camera will appear  

There will be a delay , But no card , I don't know if it's two devices wifi The reason for communication