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• matroskaenc : allow override of "writing application" tag

  3 mars 2014, par John Stebbins

  matroskaenc : allow override of "writing application" tag
  Signed-off-by : Tim Walker <tdskywalker@gmail.com>
  CC : libav-stable@libav.org
  

  • [DH] libavformat/matroskaenc.c

• ffmpeg native player started from spring application freezes

  21 mars 2018, par Jemo Mgebrishvili

  I have a spring-mvc project, from browser on button click I’m starting ffmpeg player (ffplay) for video/audio streaming, the problem is that, when player window is opened after the button click, it freezes and not responds, it shows one frame and stops frame updates but has audio voice, also I can’t move it and change player position, if I start the ffplay from cmd (outside from my app) it works fine.
  this is how I am starting the player

  Thread({
  
          val cmd = arrayOf("pathToTheffplay", "-loglevel", "verbose", "rtmp://localhost:portNum/streamName")
  
          val pb = ProcessBuilder(*cmd)
  
          pb.start()
  
          println("player started")
  
    }).start()

  what I am missing ? Any advice ?

• pyglet's video example application not working

  3 octobre 2020, par C. E.

  I'm trying to get the pyglet video player example to work, but I'm getting the following error :

  


  


  pyglet.media.codecs.ffmpeg.FFmpegException : avformat_open_input in
ffmpeg_open_filename returned an error opening file
/home/ce/Downloads/sample-mp4-file.mp4 Error code : -1094995529

  


  


  I decoded this number, and it turns out that it corresponds to the "INDA" error code in FFMPEG's error.h, which means

  


  


  Invalid data found when processing input

  


  


  The example video that I used can be downloaded here. I tried the mp4 one, the avi one and the webm one. I also tried other files that I have locally. They all work in other video players, and in fact some were created using FFMPEG.

  


  Finally, I used pyglet.media.have_ffmpeg() to make sure that pyglet agrees with me that I have ffmpeg installed.

  


  Originally, I had ffmpeg 3.4 installed globally, i.e. which ffmpeg pointed to a 3.4 binary. I then replaced that binary with a ffmpeg 4.1 binary. However, when I run pyglet.info.dump_ffmpeg() it still say 3.4.8 so I may not have suceeded in trying 4.1. I tried setting os.environ["LD_LIBRARY_PATH"] but it is still printing 3.4.8.

  


  Operating system : Ubuntu 18.04. I have gotten it to work on Ubuntu 20.04. It uses a newer FFMPEG which I suspect is important.

  


  What can I do ?