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• Using ffmpeg to build a streaming server to stream static media files (broadcast behaviour)

  15 février 2018, par MiDaa

  I’ve read some online articles and SO questions, most of them are about streaming MY video to SERVER like youtube or switch.

  This is about a project of interest, here are what it should do.

  • Work on a Linux server
  • Serve media(preferably multiple format like mp4 mkv) files to client through rtp protocol maybe ?
  • Server could set a specific time to start the streaming or end it
  • Server could pause and resume the streaming(?)
  • Multiple clients connect and play the stream at same time(sounds like a basic feature)

  After some research, I found that ffmpeg is a great open-source candidate for such a project but as a newbie in this area, I’m having a tough time understanding how this whole thing work.

  As this(ffmpeg doc) states, it looks like just a one liner command. But I don’t find anything fit my feature listed above.

  Can ffmpeg be used to achieve those ? If not appriciate any suggesstion on where I should be looking at.

  EDIT :

  • Target devices : iPad,iPhone, Android phones should be able to watch the stream using a web browser(assume a modern browser)

• Revert "rtsp : Interpret the text media type as AVMEDIA_TYPE_DATA"

  28 février 2015, par Gilles Chanteperdrix

  Revert "rtsp : Interpret the text media type as AVMEDIA_TYPE_DATA"
  This reverts commit 26524e358147aade6e9dd18fff42d61b966bbc70.
  If we want the T.140 codec to have the AV_CODEC_ID_TEXT codec id,
  
  its type needs to be AVMEDIA_TYPE_SUBTITLE, so, keep interpreting
  
  the text media type as AVMEDIA_TYPE_SUBTITLE.
  Signed-off-by : Gilles Chanteperdrix <gilles.chanteperdrix@xenomai.org>
  
  Signed-off-by : Michael Niedermayer <michaelni@gmx.at>
  

  • [DH] libavformat/rtsp.c

• Is it possible to mimic the codec settings of a given media file with ffmpeg ?

  5 août 2014, par Konstantin

  I would like to concat two mkv video file, one 1 sec (32 frames), and one 20 min, but the shorter has different encoding. I don’t want to encode both, but the shorter, and I would like to take the codec settings from the longer stream, and then concat them with command similar to :

  ffmpeg -f concat -i list.txt -c copy output.mkv

  Where list.txt contains :

  file properly-encoded-shorter-stream.mkv
  
  file longer-stream.mkv

  Audio streams are not problematic, both are uncompressed PCM wav.
  Details of my media files (3.avi was produced with avisynth / wine / virtualdub, the other mkv files are taken from a media file)

  ffmpeg -i 3.avi -i 5.mkv 
  
  ffmpeg version 2.3.1 Copyright (c) 2000-2014 the FFmpeg developers
  
    built on Jul 31 2014 14:53:16 with gcc 4.9.1 (GCC)
  
    configuration: --prefix=/usr --disable-debug --disable-static --enable-avisynth --enable-avresample --enable-decoder=atrac3 --enable-decoder=atrac3p --enable-dxva2 --enable-fontconfig --enable-gnutls --enable-gpl --enable-libass --enable-libbluray --enable-libfreetype --enable-libgsm --enable-libmodplug --enable-libmp3lame --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libopenjpeg --enable-libopus --enable-libpulse --enable-librtmp --enable-libschroedinger --enable-libspeex --enable-libtheora --enable-libv4l2 --enable-libvorbis --enable-libvpx --enable-libx264 --enable-libx265 --enable-libxvid --enable-pic --enable-postproc --enable-runtime-cpudetect --enable-shared --enable-swresample --enable-vdpau --enable-version3 --enable-x11grab
  
    libavutil      52. 92.100 / 52. 92.100
  
    libavcodec     55. 69.100 / 55. 69.100
  
    libavformat    55. 48.100 / 55. 48.100
  
    libavdevice    55. 13.102 / 55. 13.102
  
    libavfilter     4. 11.100 /  4. 11.100
  
    libavresample   1.  3.  0 /  1.  3.  0
  
    libswscale      2.  6.100 /  2.  6.100
  
    libswresample   0. 19.100 /  0. 19.100
  
    libpostproc    52.  3.100 / 52.  3.100
  
  [matroska,webm @ 0x84e3100] Unknown entry 0x1A45DFA3
  
  Guessed Channel Layout for  Input Stream #0.1 : stereo
  
  Input #0, matroska,webm, from '3.avi':
  
    Metadata:
  
      encoder         : libebml-0.7.5 & libmatroska-0.7.7
  
      creation_time   : 2014-08-04 23:08:59
  
    Duration: 00:00:01.03, start: 0.000000, bitrate: 153515 kb/s
  
      Stream #0:0(eng): Video: rawvideo, bgr24, 528x400, SAR 1:1 DAR 33:25, 29.97 fps, 29.97 tbr, 1k tbn, 1k tbc (default)
  
      Stream #0:1(eng): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2 channels, s16, 1536 kb/s (default)
  
  Guessed Channel Layout for  Input Stream #1.1 : stereo
  
  Input #1, matroska,webm, from '5.mkv':
  
    Metadata:
  
      encoder         : libebml-0.7.5 & libmatroska-0.7.7
  
      creation_time   : 2014-08-04 22:45:57
  
    Duration: 00:06:18.45, start: 0.000000, bitrate: 3219 kb/s
  
      Stream #1:0(eng): Video: mpeg4 (Advanced Simple Profile) (XVID / 0x44495658), yuv420p, 528x400 [SAR 1:1 DAR 33:25], 29.97 fps, 29.97 tbr, 1k tbn, 29.98 tbc (default)
  
      Stream #1:1(eng): Audio: pcm_s16le ([1][0][0][0] / 0x0001), 48000 Hz, 2 channels, s16, 1536 kb/s (default)