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• Piping pi's opencv video to ffmpeg for Youtube streaming

  15 juin, par Mango Plaster

  This is a small python3 script reading off picam using OpenCV :

  


  #picamStream.py

import sys, os
from picamera.array import PiRGBArray
from picamera import PiCamera
import time
import cv2
 
# initialize the camera and grab a reference to the raw camera capture
camera = PiCamera()
camera.resolution = (960, 540)
camera.framerate = 30
rawCapture = PiRGBArray(camera, size=(960, 540))
 
# allow the camera to warmup
time.sleep(0.1)
 
# capture frames from the camera
for frame in camera.capture_continuous(rawCapture, format="bgr", use_video_port=True):

    image = frame.array
 
    # ---------------------------------
    # .
    # Opencv image processing goes here
    # .
    # ---------------------------------

    os.write(1, image.tostring())
 
    # clear the stream in preparation for the next frame
    rawCapture.truncate(0)

# end


  


  And I am trying to pipe it to ffmpeg to Youtube stream

  


  My understanding is that I need to reference below two commands to somehow come up with a new ffmpeg command.

  


  


  Piping picam live video to ffmpeg for Youtube streaming.

  


  raspivid -o - -t 0 -vf -hf -w 960 -h 540 -fps 25 -b 1000000 | ffmpeg -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -i - -vcodec copy -acodec aac -ab 128k -g 50 -strict experimental -f flv rtmp://a.rtmp.youtube.com/live2/[STREAMKEY]

  


  


  


  Piping OPENCV raw video to ffmpeg for mp4 file.

  


  python3 picamStream.py | ffmpeg -f rawvideo -pixel_format bgr24 -video_size 960x540 -framerate 30 -i - foo.mp4

  


  


  So far I've had no luck. Can anyone help me with this ?

  


• Downloading videos one by one with youtube-dl

  9 août 2019, par puter

  Im trying to execute the youtube-dl download command from node which is asynchronous and I have a bunch of videos that gets downloaded each time so I want to execute the downloadClip command as soon as each one finishes. How do I call this function in a chain like fashion so that only one video gets downloaded at a time ?

  var downloadClip = function( videoID, channelPath ) {
  
      var args = [
  
          '-o', config.fileName,
  
          '--download-archive', channelPath + '/' + config.archiveFile,
  
      ];
  
  
  
      var options = {
  
          cwd: channelPath
  
      };
  
  
  
      return new Promise( function( resolve, reject ) {
  
          ytdl.exec( videoID, args, options, function( err, output ) {
  
              if ( err ) {
  
                  reject( err );
  
              } else {
  
                  resolve( output );
  
              }
  
          } );
  
      } );
  
  };

• How to set up a continuous stream from Icecast to YouTube Live using FFmpeg ?

  16 mai 2020, par Teymur Gahramanov

  When Icecast servers turns off, FFmpeg trying to reconnect but with only one attempt. Here is error which i get and my script.

  



  [http @ 0x556612e43f80] Stream ends prematurely at 4040716, should be 1844674407370955161597x
[http @ 0x556612e43f80] Will reconnect at 4040716 error=Input/output error.
[tcp @ 0x7fe10400b7a0] Connection to tcp://185.195.26.99:8000 failed: Connection refused
[http @ 0x556612e43f80] Failed to reconnect at 0.
185.195.26.99:8000/radio: Input/output error1:40.96 bitrate=2878.3kbits/s speed=0.997x


  



  After that stream continuing, and YouTube does not break live translation, but it goes empty.

  



  #!/bin/bash

image=../pic/1.jpg #path to image
source=http://***.**.**.**:8000/radio #radio stream as source
youtube_url=rtmp://a.rtmp.youtube.com/live2 #rtmp://a.rtmp.youtube.com/live2
youtube_key=****-****-*****-****
resolution=1920x1080 #stream resolution

###########################################################

stream=FFREPORT=file=../log/stream-%t.log:level=32 ffmpeg \
        -thread_queue_size 1024 \
        -reconnect 1 -reconnect_at_eof 1 -reconnect_streamed 1 -reconnect_delay_max 3600 -i $source \
        -re -loop 1 -i $image \
        -acodec aac -b:a 128k -ar 44100 -strict experimental \
        -vcodec libx264 -preset ultrafast -tune stillimage -r 30 -g 60 -b:v 4500k -minrate 4000k -maxrate 4500k -bufsize 6000k \
        -s $resolution \
        -f flv \
        $youtube_url/$youtube_key\

until $stream ; do
        echo "Restarting stream ..."
        sleep 2
done