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• How to split streaming video into pieces FFMPEG

  17 juin 2019, par danilshik

  I have a bat script (Windows) for the library Livestreamer to record the broadcast in the video

  :loop
  
  
  
  set day=%DATE:~0,2%
  
  set month=%DATE:~3,2%
  
  set year=%DATE:~6,4%
  
  
  
  set hour=%TIME:~0,2%
  
  set minute=%TIME:~3,2%
  
  set second=%TIME:~6,2%
  
  
  
  set YYYYMMDD=%day%_%month%_%year%_%hour%_%minute%_%second%
  
  
  
  
  
  streamlink --hls-live-edge 99999 --hls-segment-threads 10 --ringbuffer-size 1024M -o %YYYYMMDD%.ts https://www.twitch.tv/silvername best
  
  goto loop

  How can I break this video into pieces ?

  I tried to do so, but it did not work, writes the error of the arguments

  ffmpeg -i "streamlink --hls-live-edge 99999 --hls-segment-threads 10 --ringbuffer-size 1024M -o %YYYYMMDD%.ts https://www.twitch.tv/manyrin best" -f segment -segment_time 1 -vcodec copy -acodec copy "%03d.ts"

• Does Facebook multicast or unicast the live videos to its viewers ?

  14 avril 2018, par Kamran Zahoor

  This is how a live stream goes from one broadcaster to millions of viewers :

  1. A broadcaster starts a live video on their phone.
  2. The phone sends a RTMP stream to a Live Stream server.
  3. The Live Stream server decodes the video and transcodes to multiple bit rates.
  4. For each bit rate a set of one-second MPEG-DASH segments is continuously produced.
  5. Segments are stored in a datacenter cache.
  6. From the datacenter cache segments are sent to caches located in the points of presence (a PoP cache).
  7. On the view side the viewer receives a Live Story.
  8. The player on their device starts fetching segments from a PoP cache at a rate of one per second.

  My question is simple. After the step 6, does PoP cache/Edge cache/eNB (edge layer node) multicast a live video content to multiple viewers or unicast each user separately (opening up seperate streams for each user) ?

• Crash while loading JNI Library

  23 juin 2016, par Amira Elsayed Ismail

  I am using ffmpeg4android_lib to compress video in my android application, it is working in all devices but it does not work in s6 edge and s7 edge

  my code as following :

  String inputFile = FileManager.getInstance().getRealPathFromVideoUri(context, video);
  
                      Log.i("INPUT FILE PATH", inputFile);
  
  
  
                      LoadJNI vk = new LoadJNI();
  
                      try {
  
                          String workFolder = context.getApplicationContext().getFilesDir().getAbsolutePath();
  
                          String outputFile = FileManager.getInstance().getFileFullName(ForSaleConstants.VIDEO_FOLDER,
  
                                  String.format(ForSaleConstants.VIDEO_NAME_FILE_FORMAT,
  
                                          ForSaleConstants.VIDEO_NAME_FILE_NAME_PREFIX, System.currentTimeMillis()));
  
                          String complexCommand[] = {
  
                                  "ffmpeg", "-y"
  
                                  , "-i", inputFile
  
                                  , "-strict", "experimental"
  
                                  , "-s", "320x240"
  
                                  , "-r", "25"
  
                                  , "-aspect", "4:3"
  
                                  , "-ab", "48000"
  
                                  , "-ac", "2"
  
                                  , "-vcodec", "mpeg4"
  
                                  , "-movflags", "+faststart"
  
                                  , "-ar", "22050"
  
                                  , "-b", "2097k"
  
                                  , outputFile};
  
                          vk.run(complexCommand, workFolder, context.getApplicationContext());
  
                          Log.i("OUTPUT FILE PATH", outputFile);
  
                          return outputFile;
  
                      } catch (Throwable e) {
  
                          ForSaleServerManager.getInstance().logAndroidError("Couldn't compress video file");
  
                          return null;
  
                      }