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• Get data from native process on Android

  22 octobre 2013, par Gonzalo Solera

  I´m converting a video with my app, and I got it using the FFmpeg library. I´m using a static compiled version of FFmpeg and I run my command like this :

          //Conversion video
  
          try {
  
              Process p = Runtime.getRuntime().exec("data/data/package/cache/ffmpeg -i "   path   " -g "   String.valueOf(keyFrames)   " -s 720x480 -vcodec libx264 -an -y /sdcard/lowResolution.mp4");
  
              p.waitFor();
  
          } catch (IOException e) {
  
              // TODO Auto-generated catch block
  
              e.printStackTrace();
  
          } catch (InterruptedException e) {
  
              // TODO Auto-generated catch block
  
              e.printStackTrace();
  
          }
  
          Log.d(TAG, "Video convertido"); 

  It works well but it takes me too much time, so I would like to put a progress bar, so I should need to read output events of the process (the same output I can see when I execute the command in terminal) in order to know how long will it take or something like that.

  Sorry for my english and thanks for help !!

• Is there a way to encode multiple audio and sub streams managed by language

  17 juillet 2020, par ScarVite

  so, i have a folder full of .mkv's, i have a one liner which can convert them all to mp4's
these new files now have multiple audio and subtitle streams, one eng, one ger one jap and for subtitles the same, is there an way with which i can easily specify use f.e. German audio and burn eng subtitles.
My One Liner :

  


  for /R %f IN (*.mkv) DO ffmpeg -i "%f" -c copy "%~nf.mp4"


  


  How would i have to modify this one Liner for it to work.
I found out that with -vf subtitles=foo.ass i can hardcode subtitles, but how do i select one audio and or subtitle stream from included with the file ?
and how would i select f.e. a audio atream but none subtitle stream

  


  I found out, that with

  


  -map 0:V -map 0:a:m:language:ger -map 0:s


  


  I can get a file with which only has the german audio files, but now i need the same for the subtitles, to only include the english ones

  


• Is it posible to add an HTML page as an overlay in a RTMP stream using Nginx and FFMPEG ?

  4 août 2021, par tanowalla

  I have already installed Nginx on a EC2 instance (Ubuntu 18.04) for livestreaming to Youtube using RTMP. I want to setup a HTML page with a world clock and transparent background.

  


  I installed Nginx using this tutorial.

  


  https://www.scaleway.com/en/docs/setup-rtmp-streaming-server/

  


  Would it be possible to load the HTML page using NGINX and FFMPEG so i can overlay it over the RTMP livestream incoming from a camera and push it to Youtube ?

  


  I hope someone gets the idea, i apologize for my english, it is not my native language and have really no idea if this is even possible.

  


  Thank you very much in advance.