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• Wrapping an existing RTP stream with RTSP

  12 janvier 2015, par Neverbirth

  I have a RTP multicast stream from ffmpeg that requires users to use external SDP files, as this sometimes becomes a problem I was thinking of wrapping the stream using RTSP.

  I have an application that already makes some management for the RTP stream, so it would be useful to have the RTSP wrapper inside it as well, although I don’t want the wrapper to do anything beyond delivering the SDP information. Right now I’d say I’m correctly delivering the SDP information (otherwise it’s stuck in that request), however I’m not getting any PLAY command, the player is stuck after the SETUP request, so I guess my reply is wrong, but after testing many different values for the Transport header I haven’t been able to get anything beyond this point.

  This is the SDP :

  v=0
o=- 0 0 IN IP4 127.0.0.1
s=No Name
c=IN IP4 236.0.0.1
t=0 0
a=tool:libavformat 56.7.102
m=video 2000 RTP/AVP 96
b=AS:500
a=rtpmap:96 H264/90000
a=fmtp:96 packetization-mode=1

  This is a sample SETUP request from VLC :

  SETUP rtsp://127.0.0.1:34343/live.sdp/ RTSP/1.0
CSeq: 4
User-Agent: LibVLC/2.1.5 (LIVE555 Streaming Media v2014.05.27)
Transport: RTP/AVP;multicast;client_port=2000-2001

  And one of many replies I’ve tried :

  RTSP/1.0 200 OK
CSeq: 4
Transport: RTP/AVP;multicast;client_port=2000-2001;source=236.0.0.1;port=2000-2001
Session: 0456804596

  I’ve tried using destination instead of source, server_port instead of port, also, although the RTP multicast port is 2000, I’ve seen the streaming is also using other ports like 57927 and 57928, so I’ve tried those ones as well, etc.

• libavformat : Remove a misleading/incorrect comment

  3 janvier 2015, par Martin Storsjö

  libavformat : Remove a misleading/incorrect comment
  This comment can be traced back to the initial commit from 2001,
  
  and it seemed to be misleading/incorect already back then. (It
  
  was used for normal, non-raw file formats already then.)
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/avformat.h

• avcodec/me_cmp : restore author attribution and copyrights

  17 juillet 2014, par Michael Niedermayer

  avcodec/me_cmp : restore author attribution and copyrights
  These where removed by libav in
  See : git show -C 2d60444331fca1910510038dd3817bea885c2367
  
  diff —git a/libavcodec/dsputil.c b/libavcodec/me_cmp.c
  
  similarity index 98%
  
  rename from libavcodec/dsputil.c
  
  rename to libavcodec/me_cmp.c
  
  index ba71a99..9fcc937 100644
  
  — - a/libavcodec/dsputil.c
  
  +++ b/libavcodec/me_cmp.c
  
  @@ -1,8 +1,4 @@
  
   /*
  
   * DSP utils
  
   * Copyright (c) 2000, 2001 Fabrice Bellard
  
   * Copyright (c) 2002-2004 Michael Niedermayer <michaelni@gmx.at>
  
   *
  
    * This file is part of Libav.
  
    *
  
    * Libav is free software ; you can redistribute it and/or
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavcodec/me_cmp.c