Sur d’autres sites (9758)

• FFSERVER - streaming an ASF video as Webm output

  30 mai 2014, par Emmanuel Brunet

  I’m trying to stream an IP webcam ASF live stream to a ffserver to output a webm video format. The server starts successfully but the ffserver commands used to feed the ffserver fails and generates a core dump.

  Input stream

  $ ffprobe http://account:password@webcam/videostream.asf
  
  
  
  Input #0, asf, from 'http://admin:alpha1237@webcam/videostream.asf':
  
    Duration: N/A, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 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

  ffserver configuration

  my ffserver configuration is :

  Port 8091
  
  RTSPPort 554
  
  BindAddress 192.168.1.62
  
  MaxHTTPConnections 1000
  
  MaxClients 100
  
  MaxBandwidth 1000
  
  CustomLog -
  
  
  
  <feed>
  
          File /tmp/webcam.ffm
  
          FileMaxSize 500M
  
          ACL allow localhost
  
          ACL allow 192.168.0.0 192.168.255.255
  
  
  
  </feed>
  
  
  
  <stream>              # Output stream URL definition
  
     Feed webcam.ffm              # Feed from which to receive video
  
     Format webm
  
  
  
     # Audio settings
  
     AudioCodec vorbis
  
     AudioBitRate 64             # Audio bitrate
  
  
  
     # Video settings
  
     VideoCodec libvpx
  
     VideoSize 640x480           # Video resolution
  
     VideoFrameRate 25           # Video FPS
  
     AVOptionVideo flags +global_header  # Parameters passed to encoder
  
                                         # (same as ffmpeg command-line parameters)
  
     AVOptionVideo cpu-used 0
  
     AVOptionVideo qmin 10
  
     AVOptionVideo qmax 42
  
     AVOptionVideo quality good
  
     AVOptionAudio flags +global_header
  
     PreRoll 15
  
     StartSendOnKey
  
     # VideoBitRate 32            # Video bitrate
  
  </stream>
  
  
  
  <stream>
  
          Format status
  
          # Only allow local people to get the status
  
          ACL allow localhost
  
          ACL allow 192.168.0.0 192.168.255.255
  
  </stream>

  ffmpeg feed

  I run the following command that fails

  $ ffmpeg  -i http://account:password@webcam/videostream.asf http://192.168.1.62:8091/webcam.ffm
  
  http://192.168.1.62:8091/webcam.ffm
  
  Input #0, asf, from 'http://account:password@webcam/videostream.asf':
  
    Duration: N/A, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 640x480, 25 tbr, 1k tbn, 1k tbc
  
      Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, mono, s16p, 32 kb/s
  
  [swscaler @ 0x36a80c0] deprecated pixel format used, make sure you did set range correctly
  
  Segmentation fault

  I tryed

  $ ffmpeg  -i http://account:password@webcam/videostream.asf -pix_fmt yuv420p  http://192.168.1.62:8091/webcam.ffm

  But it raises the same error.

  Thanks for your help

  Edit

  For an easy testing (I thought), I tried to publish the whole ASF stream as is, meaning connecting the ASF webcam output stream to the ffserver that outputs ASF format too.
  And thus with mirrored encoding so I changed the ffserver configuration to

  ...
  
  <stream>
  
      Feed webcam.ffm
  
      Format asf
  
      VideoFrameRate 25
  
      VideoSize 640X480
  
      VideoBitRate 256
  
      VideoBufferSize 1000
  
      VideoGopSize 30
  
      AudioBitRate 32
  
      StartSendOnKey
  
  </stream>
  
  ...

  And the output is now :

  Input #0, asf, from 'http://admin:alpha1237@webcam/videostream.asf':
  
    Duration: N/A, start: 0.000000, bitrate: 32 kb/s
  
      Stream #0:0: Video: mjpeg (MJPG / 0x47504A4D), yuvj422p(pc), 640x480, 1k tbr, 1k tbn, 1k tbc
  
      Stream #0:1: Audio: adpcm_ima_wav ([17][0][0][0] / 0x0011), 8000 Hz, mono, s16p, 32 kb/s
  
  [swscaler @ 0x3d620c0] deprecated pixel format used, make sure you did set range correctly
  
  Output #0, ffm, to 'http://192.168.1.62:8091/webcam.ffm':
  
    Metadata:
  
      creation_time   : now
  
      encoder         : Lavf55.40.100
  
      Stream #0:0: Audio: wmav2, 22050 Hz, mono, fltp, 32 kb/s
  
      Metadata:
  
        encoder         : Lavc55.64.100 wmav2
  
      Stream #0:1: Video: msmpeg4v3 (msmpeg4), yuv420p, 640x480, q=2-31, 256 kb/s, 1k fps, 1000k tbn, 1k tbc
  
      Metadata:
  
  Stream mapping:
  
    Stream #0:1 -> #0:0 (adpcm_ima_wav -> wmav2)
  
    Stream #0:0 -> #0:1 (mjpeg -> msmpeg4)
  
  Press [q] to stop, [?] for help
  
  Segmentation fault

  I can’t even forward the stream.

• IP Camera RTSP video encryption

  5 juin 2018, par Abdullah Shafiq

  I have an IP Camera which supports RTSP. I have connected it to anOdroid(Single Board Computer). I want get that RTSP feed, encrypt it and then send again using RTSP. What is the best way to achieve this ?

• Livestream doesn't start unless I open the YouTube Live Dashboard [closed]

  20 mars 2024, par Gavin Trujillo

  I have a camera feed that streams 24/7 on YouTube. Everything works fine, except the stream often goes down due to internet reliability issues. I can detect that the stream is down with the v3/search endpoint, then an automated command is sent from my server to restart it, but the stream doesn't start like it should.

  


  I've discovered that the live stream will only start if I open the YouTube Live Dashboard first.
Before opening the dashboard, my streaming software will upload data using the stream key, but there's no live stream. Upon opening the YouTube Live Dashboard, it shows "Good Connection" but with no video feed. My automation script is continuously restarting the stream, so it comes up very shortly after opening the dashboard every time.

  


  Streaming software : I use ffmpeg to translate an RTSP stream directly to YouTube.

  


  ffmpeg -rtsp_transport tcp -re -i "rtsp://$cameraLink" -f lavfi -i anullsrc=channel_layout=stereo:sample_rate=44100 -force_key_frames "expr:gte(t,n_forced*2)" -nostdin -f flv -map 0:v:0 -map 1:a:0 -c:v libx264 -preset ultrafast -crf 43 -s 1280x724 -r 30 -c:a aac "rtmp://a.rtmp.youtube.com/live2/$streamKey"


  


  Since entering into the YouTube Live Dashboard seems to start some sort of "active state", I've tried various Oauth2 and key API methods to start the live stream. I haven't gotten anything to work so far.