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• dashjs can't find initialization segment on manifest.mpd

  30 avril 2016, par Abelardo Mendoza

  I am following this tutorial to stream a WebM. I have no issues running the ffmpeg commands to generate the videos/audio/manifest files but when I try to run it locally, there’s no video or audio at all and dashjs floods the console with :

  Searching for initialization.    
  
  Start searching for initialization.     
  
  Perform init search: http://localhost:8080/video_1280x720_500k.webm    
  
  Perform SIDX load: http://localhost:8080/video_640x360_750k.webm     
  
  Perform SIDX load: http://localhost:8080/video_1280x720_500k.webm 

  Writing that to console until I stop the server. I have tried using other mpd files such as this, which is used on the dashjs quickstart and it plays the video without any problems.

  I used this guide to install the latest version of ffmpeg on Ubuntu 14.04 LTS :

  ffmpeg version N-79688-g3cb3ddd Copyright (c) 2000-2016 the FFmpeg developers
  
  built with gcc 5.3.0 (Ubuntu 5.3.0-3ubuntu1~14.04) 20151204
  
  configuration: --prefix=/home/ab/cpp/ffmpeg_build --pkg-config-flags=--static --extra-cflags=-I/home/ab/cpp/ffmpeg_build/include --extra-ldflags=-L/home/ab/cpp/ffmpeg/lib --bindir=/home/ab/bin --enable-gpl --enable-libass --enable-libfdk-aac --enable-libfreetype --enable-libmp3lame --enable-libopus --enable-libtheora --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-nonfree
  
  libavutil      55. 23.100 / 55. 23.100
  
  libavcodec     57. 38.100 / 57. 38.100
  
  libavformat    57. 34.103 / 57. 34.103
  
  libavdevice    57.  0.101 / 57.  0.101
  
  libavfilter     6. 44.100 /  6. 44.100
  
  libswscale      4.  1.100 /  4.  1.100
  
  libswresample   2.  0.101 /  2.  0.101
  
  libpostproc    54.  0.100 / 54.  0.100

  When running on ffmpeg :

  ffmpeg \
  
   -f webm_dash_manifest -i video_160x90_250k.webm \
  
   -f webm_dash_manifest -i video_320x180_500k.webm \
  
   -f webm_dash_manifest -i video_640x360_750k.webm \
  
   -f webm_dash_manifest -i video_640x360_1000k.webm \
  
   -f webm_dash_manifest -i video_1280x720_500k.webm \
  
   -f webm_dash_manifest -i audio_128k.webm \
  
   -c copy -map 0 -map 1 -map 2 -map 3 -map 4 -map 5 \
  
   -f webm_dash_manifest \
  
   -adaptation_sets "id=0,streams=0,1,2,3,4 id=1,streams=5" \
  
   manifest.mpd

  It generates the following manifest.mpd :

  <?xml version="1.0" encoding="UTF-8"?>
  
  <mpd xmlns="urn:mpeg:DASH:schema:MPD:2011" type="static" mediapresentationduration="PT117.726S" minbuffertime="PT1S" profiles="urn:webm:dash:profile:webm-on-demand:2012">
  
    <period start="PT0S" duration="PT117.726S">
  
      <adaptationset mimetype="video/webm" codecs="vp9" lang="eng" bitstreamswitching="true" subsegmentalignment="true" subsegmentstartswithsap="1">
  
        <representation bandwidth="198155" width="160" height="90">
  
          <baseurl>video_160x90_250k.webm</baseurl>
  
          <segmentbase indexrange="2007834-2008211">
  
            <initialization range="0-437"></initialization>
  
          </segmentbase>
  
        </representation>
  
        <representation bandwidth="459264" width="320" height="180">
  
          <baseurl>video_320x180_500k.webm</baseurl>
  
          <segmentbase indexrange="4459996-4460374">
  
            <initialization range="0-439"></initialization>
  
          </segmentbase>
  
        </representation>
  
        <representation bandwidth="718495" width="640" height="360">
  
          <baseurl>video_640x360_750k.webm</baseurl>
  
          <segmentbase indexrange="6614036-6614414">
  
            <initialization range="0-441"></initialization>
  
          </segmentbase>
  
        </representation>
  
        <representation bandwidth="931445" width="640" height="360">
  
          <baseurl>video_640x360_1000k.webm</baseurl>
  
          <segmentbase indexrange="8309082-8309460">
  
            <initialization range="0-441"></initialization>
  
          </segmentbase>
  
        </representation>
  
        <representation bandwidth="821274" width="1280" height="720">
  
          <baseurl>video_1280x720_500k.webm</baseurl>
  
          <segmentbase indexrange="8728812-8729190">
  
            <initialization range="0-441"></initialization>
  
          </segmentbase>
  
        </representation>
  
      </adaptationset>
  
      <adaptationset mimetype="audio/webm" codecs="vorbis" lang="eng" audiosamplingrate="44100" bitstreamswitching="true" subsegmentalignment="true" subsegmentstartswithsap="1">
  
        <representation bandwidth="107104">
  
          <baseurl>audio_128k.webm</baseurl>
  
          <segmentbase indexrange="1538710-1539184">
  
            <initialization range="0-4112"></initialization>
  
          </segmentbase>
  
        </representation>
  
      </adaptationset>
  
    </period>
  
  </mpd>

  The index.html has a few changes because dash.js changed the way the player gets initialized.

      
  
          
  
          
  
          <code class="echappe-js">&lt;script src=&quot;http://cdn.dashjs.org/latest/dash.all.debug.js&quot;&gt;&lt;/script&gt;
  
              
          
  

  And here is Chromium’s log file. I’m converting this webm from this site.

  If I missed out any other relevant information or if anyone can guide me into the right direction, please let me know.

  Edit :

  Like Will Law mentioned, using the Shaka Player worked without any issues with my current manifest. Hope this helps anyone else.

• FFserver : cannot connect via rtsp

  27 avril 2016, par newfoundstory

  so im currrently trying to stream my windows desktop using ffmpeg into a raspberry pi running ffserver.
  The client software im using needs to use RTSP, however i cannot connect to the stream no matter what i try.
  I even used VLC in the messages it just says it cannot connect to the stream.
  Any help would be greatly appreciated !
  Im attempting to access the stream with rtsp :// 169.254.70.227 :8544/test.flv, as soon as i do it stops the ffmpeg feed

  FFserver conf

  `RTSPPort 8544
  
  HTTPPort 8090                      # Port to bind the server to
  
  HTTPBindAddress 0.0.0.0
  
  MaxHTTPConnections 2000
  
  MaxClients 1000
  
  MaxBandwidth 10000             # Maximum bandwidth per client
  
                                 # set this high enough to exceed stream bitrate
  
  CustomLog -                       # Remove this if you want FFserver to daemoni$
  
  
  
  <feed>               # This is the input feed where FFmpeg will send
  
     File ./feed1.ffm            # video stream.
  
     FileMaxSize 100000K              # Maximum file size for buffering video
  
     ACL allow 192 .168.0.8
  
     ACL allow 192 .168.0.17
  
     ACL allow 169 .254.70.227
  
     ACL allow 169 .254.9.29
  
     ACL allow 169 .254.165.231
  
     ACL allow 10 .14.2.197
  
     ACL allow 192 .168.0.13
  
     ACL allow 10 .14.2.197
  
     ACL allow 192.16 8.0.13
  
     ACL allow 192.1 68.1.3
  
     ACL allow 192. 168.1.4
  
     ACL allow 192 .168.1.2
  
  </feed>
  
  
  
  <stream>                       # Output stream URL definition
  
     Format rtp
  
     Feed feed1.ffm
  
  NoAudio
  
  
  
     # Video settings
  
     VideoCodec libx264
  
     VideoSize 720x576           # Video resolution
  
  VideoBufferSize 2000
  
  
  
   VideoFrameRate 30           # Video FPS
  
      # Parameters passed to encoder
  
     AVOptionVideo qmin 10
  
     AVOptionVideo qmax 42
  
  
  
     PreRoll 15
  
     StartSendOnKey
  
  MulticastAddress 224 .124.0.1
  
  MulticastPort 5000
  
  MulticastTTL 16
  
     VideoBitRate 450            # Video bitrate
  
  </stream>
  
  
  
  <stream>                    # Server status URL
  
     Format status
  
     # Only allow local people to get the status
  
     ACL allow localhost
  
    # Only allow local people to get the status
  
     ACL allow localhost
  
     ACL allow 192.168. 0.0 192.168. 255.255
  
  </stream>
  
  
  
  <redirect html="html">    # Just an URL redirect for index
  
     # Redirect index.html to the appropriate site
  
     URL http   ://www.  ffmpeg .org/
  
  </redirect>`

  FFmpeg feed

  ffmpeg -rtbufsize 2100M -f dshow -r 29.970 -i video=screen-capture-recorder -c video=screen-capture-recorder.flv http  ://  169 .254.70.227:8090/ feed1.ffm

  FFserver output

    configuration: --arch=armel --target-os=linux --enable-gpl --enable-libx264 --enable-nonfree
  
    libavutil      55. 22.101 / 55. 22.101
  
    libavcodec     57. 35.100 / 57. 35.100
  
    libavformat    57. 34.103 / 57. 34.103
  
    libavdevice    57.  0.101 / 57.  0.101
  
    libavfilter     6. 44.100 /  6. 44.100
  
    libswscale      4.  1.100 /  4.  1.100
  
    libswresample   2.  0.101 /  2.  0.101
  
    libpostproc    54.  0.100 / 54.  0.100
  
  /etc/ffserver.conf:48: Setting default value for video bit rate tolerance = 112500. Use NoDefaults to disable it.
  
  /etc/ffserver.conf:48: Setting default value for video rate control equation = tex^qComp. Use NoDefaults to disable it.
  
  /etc/ffserver.conf:48: Setting default value for video max rate = 20744848. Use NoDefaults to disable it.
  
  Wed Apr 27 10:33:46 2016 FFserver started.
  
  Wed Apr 27 10:33:46 2016 224.124.0.1:5000 - - "PLAY test.flv/streamid=0 RTP/MCAST"
  
  Wed Apr 27 10:33:46 2016 [rtp @ 0x13d4660]Using AVStream.codec to pass codec parameters to muxers is deprecated, use AVStream.codecpar instead.
  
  Wed Apr 27 10:33:49 2016 169.254.165.231 - - [GET] "/feed1. ffm HTTP/1.1" 200 4175

  FFMpeg output

  Stream mapping:
  
    Stream #0:0 -> #0:0 (rawvideo (native) -> h264 (libx264))
  
  Press [q] to stop, [?] for help
  
  [swscaler @ 000000000252f5e0] Warning: data is not aligned! This can lead to a speedloss
  
  av_interleaved_write_frame(): Unknown errortime=00:00:05.00 bitrate= 249.0kbits/s speed=0.393x
  
  Error writing trailer of http:  //169. 254.70.227:8090/feed1.ffm: Error number -10053 occurredframe=  204 fps= 15 q=26.0 Lsize=     164kB time=00:00:05.03 bitrate= 266.9kbits/s speed=0.365x
  
  video:155kB audio:0kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 5.475512%
  
  [libx264 @ 00000000025187e0] frame I:1     Avg QP:34.24  size: 32151
  
  [libx264 @ 00000000025187e0] frame P:59    Avg QP:27.14  size:  1807
  
  [libx264 @ 00000000025187e0] frame B:144   Avg QP:32.16  size:   168
  
  [libx264 @ 00000000025187e0] consecutive B-frames:  4.9%  2.0%  2.9% 90.2%
  
  [libx264 @ 00000000025187e0] mb I  I16..4: 26.0% 23.1% 50.9%
  
  [libx264 @ 00000000025187e0] mb P  I16..4:  1.9%  1.6%  1.1%  P16..4:  4.3%  0.6%  0.4%  0.0%  0.0%    skip:90.2%
  
  [libx264 @ 00000000025187e0] mb B  I16..4:  0.2%  0.1%  0.1%  B16..8:  3.1%  0.1%  0.0%  direct: 0.1%  skip:96.3%  L0:26.0% L1:73.5% BI: 0.5%
  
  [libx264 @ 00000000025187e0] final ratefactor: 24.13
  
  [libx264 @ 00000000025187e0] 8x8 transform intra:31.8% inter:47.1%
  
  [libx264 @ 00000000025187e0] coded y,u,v intra: 28.1% 8.2% 6.3% inter: 0.6% 0.2% 0.1%
  
  [libx264 @ 00000000025187e0] i16 v,h,dc,p: 30% 63%  6%  1%
  
  [libx264 @ 00000000025187e0] i8 v,h,dc,ddl,ddr,vr,hd,vl,hu: 16% 16% 63%  1%  0%  0%  1%  0%  3%
  
  [libx264 @ 00000000025187e0] i4 v,h,dc,ddl,ddr,vr,hd,vl,hu: 28% 39% 15%  2%  2%  3%  4%  3%  4%
  
  [libx264 @ 00000000025187e0] Weighted P-Frames: Y:0.0% UV:0.0%
  
  [libx264 @ 00000000025187e0] ref P L0: 66.3% 13.1% 16.9%  3.6%
  
  [libx264 @ 00000000025187e0] ref B L0: 66.6% 29.7%  3.8%
  
  [libx264 @ 00000000025187e0] ref B L1: 91.7%  8.3%
  
  [libx264 @ 00000000025187e0] kb/s:191.78
  
  Conversion failed!

• ffmpeg not converting an mp3 on OSX. Homebrew installed. Encoder (codec mp3) not found for output stream #0:0

  4 mai 2016, par Edward Potter

  Ok, did the standard hoembrew install for ffmpeg.

  All looks cool, i’m guessing that has to include the mpeg codec, yet I keep getting a 0 byte file and the error message :

  Encoder (codec mp3) not found for output stream #0:0

  Help most appreciated.

  ffmpeg -i input.mp3 -b:a 48k -ar 16000 output.mp3
  
  ffmpeg version 3.0.1 Copyright (c) 2000-2016 the FFmpeg developers
  
  built with Apple LLVM version 7.3.0 (clang-703.0.29)
  
  configuration:
  
  libavutil      55. 17.103 / 55. 17.103
  
  libavcodec     57. 24.102 / 57. 24.102
  
  libavformat    57. 25.100 / 57. 25.100
  
  libavdevice    57.  0.101 / 57.  0.101
  
  libavfilter     6. 31.100 /  6. 31.100
  
  libswscale      4.  0.100 /  4.  0.100
  
  libswresample   2.  0.101 /  2.  0.101
  
  [mp3 @ 0x7ff05a010600] Skipping 0 bytes of junk at 626.
  
  Input #0, mp3, from 'input.mp3':
  
  Metadata:
  
  title           : Allegro from Duet in C Major
  
  Duration: 00:00:59.56, start: 0.025057, bitrate: 192 kb/s
  
  Stream #0:0: Audio: mp3, 44100 Hz, stereo, s16p, 192 kb/s
  
  Metadata:
  
    encoder         : LAME3.96r
  
  Output #0, mp3, to 'output.mp3':
  
  Metadata:
  
  title           : Allegro from Duet in C Major
  
  Stream #0:0: Audio: mp3, 0 channels, 128 kb/s
  
  Stream mapping:
  
  Stream #0:0 -> #0:0 (mp3 (native) -> ? (?))
  
  
  
  Encoder (codec mp3) not found for output stream #0:0