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• Convert *.OMG with FFMPEG

  26 janvier 2020, par Jimmy88

  I would like to convert my old Atrac Files that I recorded with my Sony MiniDisc (and copied to my PC with the Sony Software SonicStage.

  I tried with FFMPEG but it seems to fail.

  jim@my-mac ~/Downloads/asdf $ ffmpeg -i JAM.omg  -codec:a libmp3lame -qscale:a 0 Car myjam.mp3
  
  ffmpeg version 4.0.2 Copyright (c) 2000-2018 the FFmpeg developers
  
    built with Apple LLVM version 10.0.0 (clang-1000.10.43.1)
  
    configuration: --prefix=/usr/local/Cellar/ffmpeg/4.0.2 --enable-shared --enable-pthreads --enable-version3 --enable-hardcoded-tables --enable-avresample --cc=clang --host-cflags= --host-ldflags= --enable-gpl --enable-libmp3lame --enable-libx264 --enable-libxvid --enable-opencl --enable-videotoolbox --disable-lzma
  
    libavutil      56. 14.100 / 56. 14.100
  
    libavcodec     58. 18.100 / 58. 18.100
  
    libavformat    58. 12.100 / 58. 12.100
  
    libavdevice    58.  3.100 / 58.  3.100
  
    libavfilter     7. 16.100 /  7. 16.100
  
    libavresample   4.  0.  0 /  4.  0.  0
  
    libswscale      5.  1.100 /  5.  1.100
  
    libswresample   3.  1.100 /  3.  1.100
  
    libpostproc    55.  1.100 / 55.  1.100
  
  [oma @ 0x7ff54c800e00] Format oma detected only with low score of 1, misdetection possible!
  
  [oma @ 0x7ff54c800e00] Couldn't find the EA3 header !
  
  JAM.omg: Invalid data found when processing input
  
  jim@my-mac ~/Downloads/asdf $

  There could be DRM on the file (which is a joke as I recorded myself with the MiniDisc and copied it over to the PC to archive it) but I heard the rumour that ffmpeg can crack the DRM.

  What could I do ?

• RTP/RTCP Stream Audio and Video using FFMPEG

  10 mai 2017, par Hakeem El Bakka-lee

  I just set up a nice WEBRtc Server (Janus) and wanted to stream some live video to a simple front-end using webrtc.
  I found an example using GStreamer but i want to use FFMPEG instead.
  It works well with GStreamer, out of the box using the example given.
  It looks something like this :

  #!/bin/sh                                                                                      
  
  gst-launch-1.0 \
  
    audiotestsrc ! \
  
      audioresample ! audio/x-raw,channels=1,rate=16000 ! \
  
      opusenc bitrate=20000 ! \
  
        rtpopuspay ! udpsink host=127.0.0.1 port=5002 \
  
    videotestsrc ! \
  
      video/x-raw,width=320,height=240,framerate=15/1 ! \
  
      videoscale ! videorate ! videoconvert ! timeoverlay ! \
  
      vp8enc error-resilient=1 ! \
  
        rtpvp8pay ! udpsink host=127.0.0.1 port=5004

  Is there a way to stream to an ip with a decided port with FFMPEG just like GStreamer ?

  EDIT :

  I found this to work on windows not linux, i guess gdigrab is not supported :

  ffmpeg -f gdigrab -i 60 -vcodec libx264 -vb 3000000 -g 60 -vprofile main -tune zerolatency -pix_fmt yuv42\
  
  0p -acodec aac -ab 128000 -ar 48000 -ac 2 -strict experimental -f rtsp rtsp://127.0.0.1

  Here is the line for Linux works great for MPEG4 stream :

  ffmpeg -f x11grab -r 25 -s cif -i :0.0 -f rtp://127.0.0.1:5004

  Thank you

• rtsp url to stream on kurento

  23 mai 2019, par damini chopra

  I have installed ffmpeg and when MP4 video is successfully running on URL :http://x.x.x.x:8050/live.mjpeg ,but when i want url(http://180.179.214.151:8050/live.mjpeg) of to display on remote stream of kurento it doesnt display any visual.

  Logs in kurento console :

  Remote icecandidate "module" :"kurento","type" :"IceCandidate","candidate" :"candidate:1 2 UDP 2013266430 172.17.0.2 35776 typ host","sdpMLineIndex":1,"sdpMid" :"1"
  Remote icecandidate "module" :"kurento","type" :"IceCandidate","candidate" :"candidate:3 2 TCP 1010827518 172.17.0.2 43398 typ host tcptype passive","sdpMLineIndex":1,"sdpMid" :"1"
  oniceconnectionstatechange -> checking
  icegatheringstate -> gathering
  Player playing ...