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• Crackling noise and other audio defects when live streaming (only) on YouTube

  7 août 2020, par almosnow

  I am using ffmpeg to transcode and stream a live video, using rtmp. Everything works fine BUT the audio that comes out on the YouTube end has cracks and pops, like what you would expect to hear when your sound card's buffer is saturated.

  


  What's weird is that I am sending the exact same information to different services, and only YouTube seems to have a problem with it. For this I am using ffmpeg's tee, like this :

  


  ffmpeg -i - -deinterlace -map 0 -flags +global_header 
       -f tee "[f=flv:onfail=ignore]rtmp://twitch/key|[f=flv:onfail=ignore]rtmp://youtube/key|out.flv"'


  


  So, the twitch end sounds great, the output file that I'm rendering also sounds good. Only on YouTube it sounds really bad.

  


  I thought it may be the audio codec, the audio settings I'm using are -c:a aac -b:a 128k -ar 44100 ; but I've tried different things (using an mp3 codec, different bitrates) and it always sounds like that. Also AAC seems to be supported according to their own (YT) guidelines.

  


  What could it be ?

  


• Record and stream desktop to Youtube by ffmpeg with HD resolution

  1er juillet 2021, par Do Ngoc Tuan

  I want to record and stream desktop to Youtube live by FFmpeg. But the output resolution is very low, maximum 360.
What options I need to change ?

  



  ffmpeg  -framerate 30 -f x11grab -i :1 -f pulse -i default -c:v libx264 -s 1920x1080 -r 60 -b:v 5000k  -crf 10 -vf format=yuv420p -c:a aac -b:a 128k -f flv rtmp://a.rtmp.youtube.com/live2/stream_key


  


• Ffmpeg command not streaming to youtube [closed]

  21 avril, par Ahmed Seddik Bouchiba

  I'm trying to stream my desktop (from an X11 session) to YouTube Live using ffmpeg. I'm running this on a Linux machine with an active X server, and I set the DISPLAY variable accordingly (:0 in most cases).

  


  Here's the ffmpeg command I've tried :

  


  ffmpeg -loglevel info \
    -probesize ${PROBESIZE} -analyzeduration ${ANALYZE_DURATION} \
    -f x11grab -video_size ${VIDEO_SIZE} -r ${FRAME_RATE} -draw_mouse 0 -i ${DISPLAY} \
    -f alsa -i default \
    -deinterlace -vcodec libx264 -pix_fmt yuv420p -preset fast \
    -r 30 -g 60 -b:v 2000k -bufsize 4000k \
    -acodec libmp3lame -ar 44100 -b:a 128k \
    -map 0:v:0 -map 1:a:0 -vsync 0 \
    -f flv "${RTMP_URL}" &


  


  Environment variables are set correctly (DISPLAY, VIDEO_SIZE, FRAME_RATE, etc.), and I replaced $RTMP_URL with the correct YouTube RTMP endpoint (e.g., rtmp ://a.rtmp.youtube.com/live2/). But nothing seems to work — the stream never starts or appears on YouTube, and sometimes I get timeout or "connection refused" errors.

  


  I've checked :

  


  That I'm logged into an active X session

  


  That I have access to the display (even tried xhost +)

  


  That ffmpeg has access to ALSA (sound seems okay)

  


  Questions :

  


  Am I missing something in my command ?

  


  Is there a better way to stream both screen and audio from an X server to YouTube Live ?

  


  Could this be a codec or YouTube-specific format issue ?

  


  Any help or working examples would be really appreciated. Thanks !