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• Find the library calls from FFMPEG command line

  6 octobre 2013, par Budius

  I'm trying to create an Android app that will use video edition, thou, using FFMPEG for the task. I already successfully compiled FFMPEG as a library (libavcodec, libavformat, etc) and included them in the Android project.

  Note that it does not contain the ffmpeg.c that can be called as a command line and the problem is that I only know the command lines to be used for all different things I want to accomplish.

  So the question is :

  from my Linux machine, how would I call ffmpeg main() in a "debug mode" to follow line-by-line what is being calling on those libraries, so I can write methods to mimic what I need to get done ? (currently I only have Android Studio installed, but I'm open to install whatever IDE ppl might suggest)

• FFmpeg dosn't listen on RTP port in debian

  26 juin 2021, par MSS

  I compose a command to encode my HLS audio stream to a mp3 stream :

  


  ffmpeg -re -i "http://cdn1.live.irib.ir:1935/channel-live/smil:r-payam/chunklist_b307200_slFa.m3u8" -acodec libmp3lame   -f rtp rtp://127.0.0.1:9434/


  


  When I run the command on windows 10 machine FFmpeg start to listen on port 9434 and works perfectly :

  


  

  


  But when I run it on my Debian machine it doesn't bind to specified port and also any of bind ports doesn't work :

  


  

  


  Running out put :

  


  

  


  FFmpeg version info :

  


  ffmpeg version N-57736-ga501d55905-static https://johnvansickle.com/ffmpeg/  Copyright (c) 2000-2021 the FFmpeg developers
built with gcc 6.3.0 (Debian 6.3.0-18+deb9u1) 20170516
configuration: --enable-gpl --enable-version3 --enable-static --disable-debug --disable-ffplay --disable-indev=sndio --disable-outdev=sndio --cc=gcc --enable-fontconfig --enable-frei0r --enable-gnutls --enable-gmp --enable-libgme --enable-gray --enable-libfribidi --enable-libass --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-librubberband --enable-libsoxr --enable-libspeex --enable-libsrt --enable-libvorbis --enable-libopus --enable-libtheora --enable-libvidstab --enable-libvo-amrwbenc --enable-libvpx --enable-libwebp --enable-libx264 --enable-libxml2 --enable-libxvid --enable-libzimg
libavutil      57.  0.100 / 57.  0.100
libavcodec     59.  1.101 / 59.  1.101
libavformat    59.  3.100 / 59.  3.100
libavdevice    59.  0.100 / 59.  0.100
libavfilter     8.  0.102 /  8.  0.102
libswscale      6.  0.100 /  6.  0.100
libswresample   4.  0.100 /  4.  0.100
libpostproc    56.  0.100 / 56.  0.100


  


  Does any body knows the correct way of stream rtp on debian ?

  


• Red 5 Media Server on Windows Server Liev streaming to Windows PCs and iOS app

  31 juillet 2013, par user1516711

  Here is what i am trying to develop and would need the advice from you geeks.
  A streaming server — Installing Red 5 on Windows Server machine.The clients would be a web app running on Windows 8 PCs and an iOS app.Web App would be developed in PHP/Node JS. Now i know that iOS app supports HLS only and Red 5 does not stream directly in that instead it uses RTSP/RTMP. So what i need to do is let server convert incoming streams from HLS to RTSP/RTMP and outgoing streams from RTMP ?RTSP to HLS using FFMPEG commands.My question is how to achieve this conversion process ? Like Should i develop some code in Java (i.e. Modifying Red 5 server code) OR some other way ?
  Any little help or insight would be highly appreciated !

  Thanks