Recherche avancée

Sur d’autres sites (9474)

• Creating a PowerShell Streamer Function w/youtube-dl, ffmpeg & ffplay

  11 juillet 2017, par Adam Chilcott

  My question is in regards to combining youtube-dl, ffmpeg, ffplay and PowerShell to handle video URLs.

  Some examples I’ve seen have piped a binary stream from youtube-dl to an external player using the Windows Command Prompt as demonstrated :

  youtube-dl --output - "https://youtube.com/mygroovycontent" | mpc-hc.exe /play /close -

  This works fine in Command Prompt as it does not mangle the binary stream. If you try and run the same command in PowerShell it doesn’t handle the binary stream so well and modifies the output, making it unreadable to the external player.

  In light of this I’ve written the following PowerShell function to get around this issue. It tries to mirror a similar function I’ve written in Bash (See : https://github.com/adamchilcott/.dotfiles/blob/master/.bash_functions.d/streamer.sh)

  The reason I’ve handled youtube-dl, ffmpeg and ffplay seperately is that defining the ffmpeg binary location in youtube-dl as an external program creates some issues when passing it in PowerShell.

  I was hoping that someone could take a look at my script and provide some feedback on what I have done here and if it can be improved upon or if a better implementation is already available ?

  Best,

  Adam.

  BEGIN POWERSHELL

  Function streamer
  
  {
  
  
  
  Param
  
  (
  
  [string] $streamURL
  
  )
  
  
  
  Begin
  
  {
  
  }
  
  
  
  Process
  
  {
  
  $streamDir = "$env:TEMP\YTD.d"
  
  
  
  $ytdBin = "Z:\PortableApps\CommandLineApps\youtube-dl\youtube-dl.exe"
  
  $streamExtractor = &$ytdBin --no-warnings --get-url $streamURL
  
  
  
  $ffmpegBin = "Z:\PortableApps\CommandLineApps\ffmpeg-20170702-c885356-win64-static\bin\ffmpeg.exe"
  
  $ffplayBin = "Z:\PortableApps\CommandLineApps\ffmpeg-20170702-c885356-win64-static\bin\ffplay.exe"
  
  
  
  if 
  
  (
  
  -not (Test-Path -Path $streamDir -PathType Any)
  
  )
  
  
  
  {
  
  New-Item $streamDir -type directory -ErrorAction SilentlyContinue
  
  }
  
  
  
  Start-Process -FilePath $ffmpegBin -ArgumentList "-loglevel quiet -i $streamExtractor -c copy $streamDir\streamContainer.m2ts" -NoNewWindow -ErrorAction SilentlyContinue
  
  
  
  Do
  
  {
  
  Start-Sleep -Seconds 1
  
  } 
  
  
  
  Until 
  
  (
  
  (Get-Item $streamDir\streamContainer.m2ts -ErrorAction SilentlyContinue).Length -gt 256kb
  
  )
  
  
  
  &$ffplayBin -loglevel quiet $streamDir\streamContainer.m2ts
  
  
  
  if 
  
  (
  
  (Test-Path -Path $streamDir -PathType Any) -eq $true -and (Get-Process -Name ffplay -ErrorAction SilentlyContinue) -eq $null
  
  ) 
  
  
  
  {
  
  
  
  Do
  
  {
  
  Stop-Process -Name ffmpeg -ErrorAction SilentlyContinue
  
  }
  
  
  
  Until
  
  (
  
  (Get-Process -Name ffmpeg -ErrorAction SilentlyContinue) -eq $null
  
  )
  
  
  
  Remove-Item $streamDir -Recurse -ErrorAction SilentlyContinue
  
  }
  
  }
  
  
  
  End
  
  {
  
  }
  
  
  
  }
  
  
  
  streamer -streamURL https://www.youtube.com/watch?v=9uFXw7vKz14

  END POWERSHELL

• FFMPEG YouTube Live Too Fast

  6 avril 2017, par Liam Martens

  So I am streaming video and audio to YouTube as follows

  THE CONTEXT

  1. First I convert a graphic GIF to an MP4 file

  ffmpeg -f gif -i graphic.gif -c:v libx264 -pix_fmt yuv420p -vf scale=1280:-1 temp.mp4

  2. Then I overlay a PNG with text over the MP4

  ffmpeg -i temp.mp4 -i overlay.png -filter_complex "overlay=10:10" '.$graphicsPath.'/graphic.mp4

  3. Then I start the stream the video and combine it with audio using following code (sources.txt is just a concat list *)

  ffmpeg -f concat -i sources.txt -i music.mp3 \
  
      -c:v libx264 -c:a aac -shortest -deinterlace \
  
      -pix_fmt yuv420p -preset '.$encoding.' -r 30 -g 60 -b:v 2500k \
  
      -acodec libmp3lame -ar 44100 -threads 6 -qscale 3 -b:a 712000 \
  
      -maxrate 800k -bufsize 1400k \
  
      -f flv rtmp://a.rtmp.youtube.com/live2/KEY

  4. After the stream ends, the code starts over again with a new song to mimic a 247 stream.

  THE ISSUE

  So the issue I am having is that it appears to be streaming too fast. It’s like the opposite of buffering issues where the buffer is way too long (as in a full song buffered by the time the first one has finished if you open the stream)

  Does anyone know how I could throttle the output ? I have tried with maxrate and bufsize but no real result.

  * sources.txt example
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  file ’graphic.mp4’
  and so on

• 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