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• dashenc : Write out DASH manifest immediately in streaming mode

  8 juin 2021, par Kevin LaFlamme

  dashenc : Write out DASH manifest immediately in streaming mode
  When streaming mode is enabled with fMP4/CMAF for DASH output, the
  
  segment files are available to read by players as soon as the first byte
  
  is written instead of only after the file is fully written. The DASH
  
  manifest currently only gets written when the final write to the segment
  
  file occurs. This means that players cannot stream the first segment
  
  while it is being written.
  When -lhls is enabled with MP4 segments the HLS manifest is written
  
  immediately to advertise the in-flight segments. This change adds the
  
  same behavior for the DASH manifest so players can stream it
  
  immediately.
  

  • [DH] libavformat/dashenc.c

• linux ffmpeg Live streaming cannot connect to another PC

  9 juin 2019, par Tae-Yeong

  I’m set ffserver and ffmpeg streaming code in the linux console terminal.

  ffserver => ffserver -f ./ffserver.conf (terminal 1)

  ffmpeg => ffmpeg -r 15 -s 640x480 -f video4linux2 -i /dev/video0 http://mylocalhostip:8090/feed1.ffm (terminal 2)

  It was working success in the localhost.
  But It could not connect other PC or Mobile.
  Firewall set disable.

  My desktop and mobile have a normal Internet connection.

  I want to Live-Streaming connect other PC or Mobile.
  How can I do ?

  Hardware = LattePanda
  OS = Ubuntu 16.04

  < ffserver.conf >

  HTTPPort 8090

  bind to all IPs aliased or not

  HTTPBindAddress 0.0.0.0

  max number of simultaneous clients

  MaxClients 1000

  max bandwidth per-client (kb/s)

  MaxBandwidth 10000

  Suppress that if you want to launch ffserver as a daemon.

  NoDaemon

      <feed>
  
      File /tmp/feed1.ffm
  
      FileMaxSize 100M
  
      </feed>
  
      <stream>
  
      Feed feed1.ffm
  
      Format swf
  
      VideoCodec flv
  
      VideoFrameRate 15
  
      VideoBufferSize 80000
  
      VideoBitRate 100
  
      VideoQMin 1
  
      VideoQMax 5
  
      VideoSize 640x480
  
      PreRoll 0
  
      Noaudio
  
      </stream>
  
      <stream>
  
      Format status
  
      ACL allow localhost
  
      ACL allow 121.172.0.0 121.172.0.255 (my desktop Ip range)
  
      </stream>

  I expect to output of My WebCam Screen, but the actual output timeout.

  My desktop OS is Window10. And Mobile OS is Android.

• How to implement HTTP Live Streaming server on Unix ?

  5 septembre 2012, par alex

  I just realized that Apple required HTTP Live Streaming in order to view videos in iPhone apps. I was not aware of this before... I am now trying to understand what this involves so I can decide whether I want to do the work and make the videos available in 3G or limit video playing to users who are connected to wi-fi.

  I read the overview provided by Apple, and now understand that my server needs to segment and index my media files. I also understand that I don't have to host the content to be able to stream it (I can point to a video hosted somewhere else, right ?).

  What's not clear to me at this point is what to implement on my server (Ubuntu Hardy) to do the actual segmenting and indexing on the fly (once again, I do not host the videos I want to serve).

  I found a link explaining how to install FFmpeg and X264, but I don't know if this is the best solution (since I have an Ubuntu server, I can't use the Apple Live Streaming tools, is it correct ?). Also, I do not understand at which point my server knows that a video needs to be converted and starts the job...

  Any feedback that could help me understand exactly what to do on the server side to be able to stream videos on my iPhone app in 3G would be greatly appreciated ! (Oh, and just it makes any difference, my app back-end is in Rails)