title: How to get rtp(javacv ffmpeg) stream from VLC as client
body: <p>I am trying to play rtp stream from vlc player which I created using javacv. Here is the code:</p>
  
  <pre><code>        FFmpegFrameGrabber frameGrabber = new FFmpegFrameGrabber("rtsp://10.6.0.147:554/ufirststream");
          frameGrabber.start();  // First I take another stream 
  
          FFmpegFrameRecorder frameRecorder = new FFmpegFrameRecorder("rtp://239.31.31.69:4433", frameGrabber.getImageWidth(), frameGrabber.getImageHeight());
  
          frameRecorder.setFormat("rtp");
          frameRecorder.setPixelFormat(AV_PIX_FMT_YUV420P);
          frameRecorder.setVideoCodec(AV_CODEC_ID_MPEG2VIDEO); &lt;-- AV_CODEC_ID_H264
          frameRecorder.setFrameRate(25);           
          frameRecorder.setVideoBitrate(1024); &lt;--1024*1024*2            
          frameRecorder.start();
          while (true) {
              frameRecorder.record(frameGrabber.grab()); //grab from stream, stream with rtp
          }
  </code></pre>
  
  <p>If I choose my codec as AV_CODEC_ID_MPEG2VIDEO I can play the stream from VLC using rtp://239.31.31.69:4433 with open network. </p>
  
  <p>If I increase the quality using setVideoBitrate(1024*1024*2) the stream lags too much and if I decrease the quality is so bad.</p>
  
  <p>I want to use AV_CODEC_ID_H264 as my codec to fasten things with better quality but i can't play the stream from VLC getting error : </p>
  
  <blockquote>
    <p>SDP required A description in SDP format is required to receive the RTP stream. Note that rtp:// URIs cannot work with dynamic RTP payload format (96).</p>
  </blockquote>
  
  <p>I tried to get sdp using wireshark and then I realized rtp stream doesn't have sdp :) so I tried to create my own sdp like this </p>
  
  <pre><code>c=IN IP4 239.31.31.69
  m=video 4433 RTP/AVP 96
  a=rtpmap:96 H264/90000
  </code></pre>
  
  <p>and this</p>
  
  <pre><code>v=0
  c=IN IP4 239.31.31.69
  a=recvonly
  t=0 0
  m=video 4433 RTP/AVP 99
  a=rtpmap:99 H264/90000
  a=fmtp:99 packetization-mode=1;profile-level-id=42c01e;sprop-parameter sets=Z0LAHukBQHsg,aM4G4g==;
  </code></pre>
  
  <p>but both seems to fail similar to this</p>
  
  <pre><code>&gt; core debug: adding item `asf.sdp' ( file:///C:/Users/Sezer/Desktop/asf.sdp )
  core debug: processing request item: asf.sdp, node: null, skip: 0
  core debug: rebuilding array of current - root Playlist
  core debug: rebuild done - 7 items, index 6
  core debug: starting playback of the new playlist item
  core debug: resyncing on asf.sdp
  core debug: asf.sdp is at 6
  core debug: creating new input thread
  core debug: Creating an input for 'asf.sdp'
  core debug: Creating an input for 'asf.sdp'
  core debug: requesting art for asf.sdp
  core debug: using timeshift granularity of 50 MiB, in path 'C:\Users\Sezer\AppData\Local\Temp'
  core debug: `file:///C:/Users/Sezer/Desktop/asf.sdp' gives access `file' demux `' path `/C:/Users/Sezer/Desktop/asf.sdp'
  core debug: specified demux `any'
  core debug: creating demux: access='file' demux='any' location='/C:/Users/Sezer/Desktop/asf.sdp' file='C:\Users\Sezer\Desktop\asf.sdp'
  core debug: looking for access_demux module matching "file": 12 candidates
  core debug: looking for meta fetcher module matching "any": 1 candidates
  core debug: no access_demux modules matched
  core debug: creating access 'file' location='/C:/Users/Sezer/Desktop/asf.sdp', path='C:\Users\Sezer\Desktop\asf.sdp'
  core debug: looking for access module matching "file": 21 candidates
  filesystem debug: opening file `C:\Users\Sezer\Desktop\asf.sdp'
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
  core debug: using access module "filesystem"
  core debug: Using stream method for AStream*
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
  core debug: starting pre-buffering
  core debug: received first data after 0 ms
  core debug: pre-buffering done 193 bytes in 0s - 188476 KiB/s
  core debug: looking for stream_filter module matching "any": 6 candidates
  core debug: no stream_filter modules matched
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
  core debug: looking for stream_filter module matching "record": 6 candidates
  core debug: using stream_filter module "record"
  core debug: creating demux: access='file' demux='any' location='/C:/Users/Sezer/Desktop/asf.sdp' file='C:\Users\Sezer\Desktop\asf.sdp'
  core debug: looking for demux module matching "any": 65 candidates
  live555 debug: version 2014.07.25
  live555 debug: RTP subsession 'video/H264'
  core debug: selecting program id=0
  core debug: adding item `file.sdp' ( file:///C:/Users/Sezer/Desktop/file.sdp )
  live555 debug: setup start: 0.000000 stop:0.000000
  live555 debug: play start: 0.000000 stop:0.000000
  core debug: using demux module "live555"
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
  core debug: no meta fetcher modules matched
  core debug: looking for a subtitle file in C:\Users\Sezer\Desktop\
  core debug: searching art for asf.sdp
  core debug: looking for art finder module matching "any": 2 candidates
  core debug: looking for decoder module matching "any": 43 candidates
  avcodec debug: CPU flags: 0x010053db
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
  avcodec debug: trying to use direct rendering
  avcodec debug: allowing 4 thread(s) for decoding
  avcodec warning: threaded frame decoding is not compatible with DXVA2, disabled
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
  core debug: meta ok for (null), need to fetch art
  core debug: Creating an input for 'file.sdp'
  avcodec debug: avcodec codec (H264 - MPEG-4 AVC (part 10)) started
  avcodec debug: using slice thread mode with 4 threads
  core debug: using decoder module "avcodec"
  core debug: looking for meta fetcher module matching "any": 1 candidates
  core debug: looking for packetizer module matching "any": 23 candidates
  core debug: using packetizer module "packetizer_h264"
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
  core debug: looking for meta reader module matching "any": 2 candidates
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\reader
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\reader
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\reader\filename.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
  core debug: no meta fetcher modules matched
  core debug: searching art for asf.sdp
  core debug: looking for art finder module matching "any": 2 candidates
  core debug: no meta reader modules matched
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
  core debug: `file:///C:/Users/Sezer/Desktop/asf.sdp' successfully opened
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
  core debug: meta ok for (null), need to fetch art
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
  core debug: no art finder modules matched
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
  core debug: looking for meta fetcher module matching "any": 1 candidates
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
  core debug: using meta fetcher module "lua"
  core debug: removing module "lua"
  core debug: searching art for asf.sdp
  core debug: looking for art finder module matching "any": 2 candidates
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
  qt4 debug: IM: Setting an input
  core debug: no art finder modules matched
  core debug: looking for meta fetcher module matching "any": 1 candidates
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
  core debug: no meta fetcher modules matched
  core debug: searching art for file.sdp
  core debug: looking for art finder module matching "any": 2 candidates
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
  core debug: no art finder modules matched
  core debug: art not found for asf.sdp
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
  lua debug: skipping script (unmatched scope) C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
  core debug: no art finder modules matched
  core debug: looking for meta fetcher module matching "any": 1 candidates
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
  core debug: using meta fetcher module "lua"
  core debug: removing module "lua"
  core debug: searching art for asf.sdp
  core debug: looking for art finder module matching "any": 2 candidates
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
  core debug: no art finder modules matched
  core debug: art not found for asf.sdp
  core debug: looking for meta fetcher module matching "any": 1 candidates
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\fetcher
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\fetcher\tvrage.luac
  core debug: using meta fetcher module "lua"
  core debug: removing module "lua"
  core debug: searching art for file.sdp
  core debug: looking for art finder module matching "any": 2 candidates
  lua debug: Trying Lua scripts in C:\Users\Sezer\AppData\Roaming\vlc\lua\meta\art
  lua debug: Trying Lua scripts in C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\00_musicbrainz.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\01_googleimage.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\02_frenchtv.luac
  lua debug: Trying Lua playlist script C:\Program Files (x86)\VideoLAN\VLC\lua\meta\art\03_lastfm.luac
  core debug: no art finder modules matched
  core debug: art not found for file.sdp
  </code></pre>
  
  <p>Can you lead me to the right direction ? What should I do to get fair quality and no lag using rtp ?</p>