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• Windows Source-Specific-Multicast packets dropped at application layer ?

  26 août 2019, par Morris

  Both Switch A and Switch B support IGMPv3, and device A and device B multicasting a video stream to the same address and port(e.g. 232.0.0.1:12000). vlc/ffplay on Windows 7/10 plays with packets lost, but on Linux, plays smoothly.

  I have tested the following scenario :

  1. with IGMP v2, both devices multicasting streams(to different addresses), both on Windows and Linux, play smoothly ;
  2. with IGMP v3, both devices multicasting streams, Linux plays smoothly, Windows 7/10 plays flicked, and Wireshark on Windows shows that no packet is lost ;
  3. with IGMP v3, only one device multicasting, both Windows and Linux play smoothly.

  +----------+                                          +--------------+
  
  | Device A |                                          | Windows 7/10 |
  
  +----------+      +----------+      +----------+      +--------------+
  
        \---------> |          |      |          |----------/
  
                    | Switch A | ---> | Switch B |
  
        /---------> |          |      |          |----------\
  
  +----------+      +----------+      +----------+        +-------+
  
  | Device B |                                            | Linux |
  
  +----------+                                            +-------+

• Compiling ffmpeg for android on windows

  8 avril 2014, par Mert

  I tried more than 5 open source library, I have no success to build them on windows.

  This is my first time using NDK and wondering why I can't simply find the .so file and use it instead of compiling from scratch.

  Please guide me with your knowledge, I am kind of stuck here.
  thank you

• ffmpeg install on windows server 2003. for use in rails app

  15 septembre 2011, par sdk

  I have a rails application which uses ffmpeg for thumbnailing/duration/file format conversion of videos.
  Currently my rails app runs in ubuntu - where ffmpeg works great. But due to some client constraints , need to run rails app on windows.
  I tried looking out for some writeups, googling around some forums but could not get a comprehensive list of steps to run ffmpeg on windows.

  Any help/alternatives/links to ge it running would be of great help.

  Thanks in advance.