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• 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


  


• Extract just the audio link from a youtube video without converting

  19 janvier 2017, par kamron shaw

  I know there are hundreds of sites to convert youtube video to mp3. Most of them do it by first downloading the video and then converting it to mp3(or any other audio format) on their server using youtube-dl, ffmpeg or similar programs.

  What I want to know is, is there any way I can just extract the audio link for any youtube video ? I don’t know if it’s possible but I saw a couple of websites doing it .

  First Website : Openaisearch.com
  This website simply gives a download link for the audio(getting it from youtube videos). I searched for a song and saw the download url, it looked something like this :

  https://redirector.googlevideo.com/videoplayback?source=youtube&requiressl=yes&clen=3814013&upn=dzwY9aUVYME&lmt=1469875393441562&expire=1484854959&mime=audio%2Fmp4&nh=IgpwcjAxLnNlYTA5Kg01Mi45NS4yMTYuMTAy&itag=140........... 

  I believe that this is not done by first downloading and converting the video to audio format(Correct me if I am wrong).
  Although the file which gets downloaded after using this link is without any extension, but adding ".m4a" at the end of downloaded file does the work.

  Second Website : http://keepvid.com/ ?url=https ://www.youtube.com/watch?v=PT2_F-1esPk

  Again similar website with similar audio link. You can check by visiting the URL and see link of audio files.

  Any idea how these websites get that "googlevideo.com" link ? Do they scrap the youtube video links or something ?

  Thanks.

• 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 !