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• FFMPEG stream desktop to youtube

  3 juillet 2018, par user8222409

  There are tutorials out there on how to stream to youtube using ffmpeg, and I have that part of the code done.
  However, I do not know how to stream the desktop in ffmpeg. The tutorials online only show usage of web cams. Anyway, What software do I use to capture the screen and stream using ffmpeg.
  Can I do this natively in ffmpeg. If so, how ?

  what I have so far is

   ffmpeg -re -ar 44100 -ac 2 -acodec pcm_s16le -f s16le -ac 2 -i /dev/zero -f h264 -i pipe:0 -c:v copy -c:a aac -ab 128k -g 40 -strict experimental -f flv -r 30 rtmp://a.rtmp.youtube.com/live2/$1

  where the $1 is a command line param.

• FFMPEG upload too fast on youtube

  9 juin 2018, par ManYouTroll

  I want to stream h24 with a linux vps under debian. I used the script that can be found here, which uses ffmpeg. It works perfectly except that I believe the conversion speed is 2x so my YouTube stream is too fast upload but it does not change the speed of playback so it’s not really live.

• ffmpeg : getting video from http page streamed to youtube

  28 novembre 2014, par M-T-A

  I’m trying to configure ffmpeg to stream to youtube from ubuntu machine.

  I have my wifi camera streaming with format ’video/x-ms-asf’ on local http page.

  Then I use these commands in attempt to stream to youtube

  VBR="2500k" # Bitrate 
  
  FPS="20" # FPS 
  
  QUAL="medium" #ffmpeg quality
  
  YOUTUBE_URL="rtmp://a.rtmp.youtube.com/live2" # URL base
  
  
  
  SOURCE="http://192.168.9.XX/videostream.asf?user=admin&pwd=***" # Source of video
  
  KEY="KEY HERE" # youtube event key
  
  
  
  ffmpeg \
  
  -i "$SOURCE"  \
  
  -vcodec copy -pix_fmt yuv420p -preset $QUAL -r $FPS -g $(($FPS * 2)) -b:v $VBR \
  
   -ar 44100 -threads 6 -qscale 3 -b:a 712000 -bufsize 512k \
  
  -f flv "$YOUTUBE_URL/$KEY" 

  I get this output

  moha@moha:~/Desktop$ sh start_stream_xmas.sh 
  
  ffmpeg version git-2014-11-28-ea38e5a Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Nov 28 2014 11:06:47 with gcc 4.8 (Ubuntu 4.8.2-19ubuntu1)
  
    configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librtmp --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-nonfree --enable-version3
  
    libavutil      54. 15.100 / 54. 15.100
  
    libavcodec     56. 13.100 / 56. 13.100
  
    libavformat    56. 15.101 / 56. 15.101
  
    libavdevice    56.  3.100 / 56.  3.100
  
    libavfilter     5.  2.103 /  5.  2.103
  
    libswscale      3.  1.101 /  3.  1.101
  
    libswresample   1.  1.100 /  1.  1.100
  
    libpostproc    53.  3.100 / 53.  3.100
  
  [mjpeg @ 0xb0c0a60] ignoring invalid SAR: 0/0
  
  Guessed Channel Layout for  Input Stream #0.1 : mono
  
  Input #0, asf, from 'http://192.168.9.66/videostream.asf?user=admin&pwd=':
  
    Duration: N/A, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc, bt470bg/unknown/unknown), 640x480, 25 tbr, 1k tbn, 1k tbc
  
      Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, 1 channels, s16p, 32 kb/s
  
  Please use -q:a or -q:v, -qscale is ambiguous
  
  Output #0, flv, to 'rtmp://a.rtmp.youtube.com/live2/createnetxmas.kpjg-5fdg-qp1c-4bvd':
  
    Metadata:
  
      encoder         : Lavf56.15.101
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p, 640x480, q=2-31, 2500 kb/s, 1k tbn, 20 tbc
  
      Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 44100 Hz, mono, s16p, 712 kb/s
  
      Metadata:
  
        encoder         : Lavc56.13.100 libmp3lame
  
  Stream mapping:
  
    Stream #0:0 -> #0:0 (copy)
  
    Stream #0:1 -> #0:1 (adpcm_ima_wav (native) -> mp3 (libmp3lame))
  
  Press [q] to stop, [?] for help
  
  Multiple frames in a packet from stream 1
  
  frame=   12 fps=0.0 q=-1.0 size=     882kB time=00:00:06.34 bitrate=1138.6kbits/frame=   13 fps= 13 q=-1.0 size=     953kB time=00:00:06.83 bitrate=1142.0kbits/frame=   14 fps=9.1 q=-1.0 size=    1029kB time=00:00:07.30 bitrate=1153.5kbits/frame=   15 fps=7.3 q=-1.0 size=    1104kB time=00:00:07.77 bitrate=1162.7kbits/frame=   16 fps=6.1 q=-1.0 size=    1181kB time=00:00:08.42 bitrate=1148.4kbits/frame=   17 fps=5.3 q=-1.0 size=    1256kB time=00:00:09.07 bitrate=1133.4kbits/frame=   18 fps=4.8 q=-1.0 size=    1325kB time=00:00:09.70 bitrate=1119.0kbits/frame=   19 fps=4.4 q=-1.0 size=    1403kB time=00:00:10.19 bitrate=1127.3kbits/frame=   20 fps=4.1 q=-1.0 size=    1482kB time=00:00:10.66 bitrate=1138.3kbits/frame=   21 fps=3.9 q=-1.0 size=    1556kB time=00:00:11.31 bitrate=1126.0kbits/moha@moha:~/Desktop$ 

  Suddenly the streaming stops and the terminal hangs. I’m not sure why. Is it because the video has no audio in streaming ?