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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.

• FFmpeg streaming : can't see image from h263 stream in flash

  5 avril 2013, par JustLogin

  I'm using FFmpeg for live rtmp-streaming of my desktop to Wowza. If I publish stream in h264 or flashsv2 codec, everything works fine, but I need h263 support too. The problem is, that I see no images from stream in Flash, if my stream's codec is H263 ! I catch NetStream.Play.Start event, and even get video's metadata, but no image is displayed in my Video object. There was the same problem with h264, when I tried to stream it with this command :

  ffmpeg -f dshow -i video=UScreenCapture -vcodec h264 -f flv rtmp://[adr]/desc

  Choosing yuv420p pixel format fixed this bug. So, streaming with the command below, is displayed in proper way in Flash :

  ffmpeg -f dshow -i video=UScreenCapture -vcodec h264 -pix_fmt yuv420p -f flv rtmp://[adr]/desc

  But when I try to solve the problem with h263 this way, nothing happens : still no image in flash.
  What I have to do to fix this bug ?

  Here is my h263 command :

  ffmpeg -f dshow -i video=UScreenCapture -vcodec h263 -pix_fmt yuv420p -s 352x288 -f flv rtmp://[adr]/desc