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• How to livestream a webcam to YouTube with FFmpeg ?

  6 juillet 2023, par pkok

  I want to send the livestream of my webcam to YouTube. I can follow YouTube's guide up to step 8. "Stream Connection" tells me there is "No data" and the button "Go Live" remains unclickable. A screenshot of this situation can be seen at

  



  

  



  As encoding software, I was planning on using FFmpeg because it can run from the target platform, a Raspberry Pi with Raspbian. A USB webcam supported by video4linux2 is used.

  



  FFmpeg's wiki shows that streaming a file can be done with the following :

  



  ffmpeg -re -i input.mkv \&#xA;-c:v libx264 -preset veryfast -maxrate 3000k \&#xA;-bufsize 6000k -pix_fmt yuv420p -g 50 -c:a aac -b:a 160k -ac 2 \&#xA;-ar 44100 -f flv rtmp://live.twitch.tv/app/<stream key="key">&#xA;</stream>

  



  I modified this command in the following ways :
1. It takes the video stream from the webcam with -f v4l2 -i /dev/video0.
2. It does not broadcast any audio with -an.
3. It broadcasts to YouTube's RTMP server, rtmp://a.rtmp.youtube.com/live2/<stream key="key"></stream>

  



  The final version of the command is now :

  



  RTMP_URL="rtmp://a.rtmp.youtube.com/live2"
STREAM_KEY="secr-etse-cret-secr"
OUTPUT=$RTMP_URL/$STREAM_KEY
ffmpeg -re -f v4l2 -i /dev/video0 \
-c:v libx264 -preset veryfast -maxrate 3000k \
-bufsize 6000k -pix_fmt yuv420p -g 50 -an \
-f flv $OUTPUT


  



  When I run this command, I would expect that "Stream connection" would change to something else than "No data" after a few seconds, but that does not happen.

  



  I have tried recording the stream to a local file with :

  



  ffmpeg -re -f v4l2 -i /dev/video0 \
-c:v libx264 -preset veryfast -maxrate 3000k \
-bufsize 6000k -pix_fmt yuv420p -g 50 -an \
-f flv test.flv


  



  This worked fine. That demonstrates to me that the issue is with getting the video stream accepted by YouTube.

  


• How to extract part of audio using youtube-dl ?

  2 janvier 2019, par Vishesh Sharma

  I am using windows 10 and I would like to know how to extract part of the audio from youtube videos using the cmd.

• FFMPEG stop live stream to Youtube

  12 janvier 2021, par Louis Hudson

  I have a problem...FFMPEG starts live streaming at Youtube live and arround 20 to 40 seconds it stop to recording.
My terminal print :

  


  


  Delay between the first packet and last packet in the muxing queue
is 10008000 > 10000000 : forcing output