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• VLC snytax to transcode & stream to stdout ?

  4 octobre 2016, par Will Tower

  Goal : I am trying to use VLC as a local server to expand the video capabilities of an app created with Adobe AIR, Flex and Actionscript. I am using VLC to stream to stdoutand reading that output from within my app.

  VLC Streaming capabilities
  VLC Flash Video

  Status : I am able to launch VLC as a background process and control it through its remote control interface (more detail). I can load, transcode and stream a local video file. The example app below is a barebones testbed demonstrating this.

  Issue : I am getting data in to my app but it is not rendering as video. I don’t know if it is a problem with my VLC commands or with writing to/reading from stdout. This technique of reading from stdout in AIR works (with ffmpeg for example).

  One of the various transcoding commands I have tried :

  -I rc  // remote control interface  
  
  -vvv   // verbose debuging  
  
  --sout  // transcode, stream to stdout 
  
  "#transcode{vcodec=FLV1}:std{access=file,mux=ffmpeg{mux=flv},dst=-}"

  This results in data coming into to my app but for some reason it is not rendering as video when using appendBytes with the NetStream instance.

  If instead I write the data to an .flv file, a valid file is created – so the broken part seems to be writing it to stdout. One thing I have noticed : I am not getting metadata through the stdout`method. If I play the file created with the command below, I do see metadata.

  Hoping someone sees where I am going wrong here.

  ---

  // writing to a file
  
  var output:File = File.desktopDirectory.resolvePath("stream.flv");
  
  var outputPath:String = output.nativePath;
  
  "#transcode{vcodec=FLV1}:std{access=file,mux=ffmpeg{mux=flv},dst=" + outputPath + "}");

  ---

  Note : In order to get this to work in AIR, you need to define the app profile as "extendedDesktop"

  ---

    <?xml version="1.0" encoding="utf-8"?>
  
    
  
  
  
      
  
          
  
      
  
  
  
      

• AVC-Intra support

  20 juillet 2013, par Kieran Kunhya

  AVC-Intra support
  This format has been reverse engineered and x264’s output has almost exactly
  
  the same bitstream as Panasonic cameras and encoders produce. It therefore does
  
  not comply with SMPTE RP2027 since Panasonic themselves do not comply with
  
  their own specification. It has been tested in Avid, Premiere, Edius and
  
  Quantel.
  Parts of this patch were written by Jason Garrett-Glaser and some reverse
  
  engineering was done by Joseph Artsimovich.
  

  • [DH] common/common.c
  • [DH] common/common.h
  • [DH] common/set.h
  • [DH] encoder/analyse.c
  • [DH] encoder/encoder.c
  • [DH] encoder/ratecontrol.c
  • [DH] encoder/set.c
  • [DH] encoder/set.h
  • [DH] x264.c
  • [DH] x264.h

• Transcode a live stream by FFmpeg & Redistribute it by VLC ?

  12 septembre 2016, par Takashi

  Can someone point me to an URL concerning exactly this ?
  I spent over half an hour and couldn’t find this example..

  https://trac.ffmpeg.org/wiki/StreamingGuide

  Even ​VLC can pick up the stream from ffmpeg, then redistribute it, acting as a server.

  Thanks for your help !

  Takashi