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• http-flv live broadcast with flv.js error

  29 mars 2019, par Forest Yang

  When I try nginx + nginx-http-flv-module + flv.js to play video from camera, error happened, but play with VLC works fine.

  log in nginx :

  flv live: app args MUST be specified, client: 192.168.89.1, server: myserver, request: "GET /live.html HTTP/1.1", host: "192.168.89.134:8080"

  Some key configurations,

  nginx.conf :

  http{
  
     ...
  
     server{
  
     ...
  
      location /live {
  
              flv_live on;
  
              chunked_transfer_encoding  on; #open 'Transfer-Encoding: chunked' response
  
              add_header 'Access-Control-Allow-Origin' '*'; #add additional HTTP header
  
              add_header 'Access-Control-Allow-Credentials' 'true'; #add additional HTTP header
  
          }
  
  
  
      }
  
  }
  
  
  
  rtmp {
  
      server {
  
          listen 1935;
  
          server_name 192.168.89.134;
  
  
  
          application myapp {
  
              live on;
  
              gop_cache on; 
  
            }
  
      }
  
  }

  ffmpeg command :

  ffmpeg -f avfoundation -s 1280x720 -r 30  -i 0 -f flv rtmp://192.168.89.134:1935/myapp/test

  VLC network url :

  http://192.168.89.134:8080/live?port=1935&app=myapp&stream=test

  HTML with flv.js :

  if (flvjs.isSupported()) {
  
              var videoElement = document.getElementById('videoElement');
  
              var flvPlayer = flvjs.createPlayer({
  
                  type: 'flv',
  
                  'isLive': true,
  
                  url: 'http://192.168.89.134:8080/live?port=1935&app=myapp&stream=test'
  
              });
  
              flvPlayer.attachMediaElement(videoElement);
  
              flvPlayer.load();
  
              flvPlayer.play();
  
          }

  Can anyone tell me why based your experience ? thank you.

• Can't break out of innermost while loop — Bash - Ubuntu

  16 novembre 2014, par Kenny Powers

  Whenever the two MD5 check sums ($SUMCHK1 & $SUMCHK2) match up in this script I get stuck in the innermost while loop, so the script never ends. When the two log files match, I get an endless echo of the two md5sums on the screen.

  #!/bin/bash
  
  
  
  FULLPATH=$1
  
  FPS=$2
  
  AVI=$(basename $1)
  
  AVIDIR=$HOME/q7video/$AVI
  
  TMPFILE=$AVIDIR/tmp.txt
  
  TMPFILE2=$AVIDIR/tmp2.txt
  
  NEWFILES=$AVIDIR/tmp3.txt
  
  FFLOG=$AVIDIR/ffmpeg.log
  
  LOGFILE=$AVIDIR/log.log
  
  FACESDIR=$AVIDIR/faces
  
  
  
  # CREATE FOLDER STRUCTURE, NO ERROR IF DIR PRE-EXISTS
  
  mkdir --parents $AVIDIR
  
  mkdir --parents $FACESDIR
  
  touch $TMPFILE $TMPFILE2 $NEWFILES $LOGFILE
  
  echo $AVI > $LOGFILE
  
  
  
  # DUMP THUMBNAILS FROM SPECIFIED AVI FILE
  
  ffmpeg -i $FULLPATH -f image2 -vf fps=fps=$FPS $AVIDIR/$AVI%03d.jpg null >/dev/null 2>$FFLOG &
  
  
  
  # DELAY TO ALLOW LOOP A WORKING DIRECTORY BEFORE START
  
  sleep 2
  
  
  
  #TOUCH FILES TO PREVENT NO FILE ERROR
  
  touch $TMPFILE $TMPFILE2
  
  
  
  # INITIALIZE VARIABLE FOR LOOP
  
  CHECK=`pgrep ffmpeg`
  
  I=0
  
  SUMCHK1=`md5sum $TMPFILE`
  
  SUMCHK2=`md5sum $TMPFILE2`
  
  
  
  while [[ "$CHECK" -gt "$I" ]]; do
  
      sleep 2
  
      echo FFMPEG RUNNING
  
      ls $AVIDIR/*.jpg > $TMPFILE
  
      while [[ "$SUMCHK1" != "$SUMCHK2" ]]; do
  
          comm -23 $TMPFILE $TMPFILE2 > $NEWFILES
  
          while read F ; do
  
              echo $F
  
              echo $F >> $TMPFILE2
  
              echo $F >> $LOGFILE
  
              python opencvtest.py $F >> $LOGFILE
  
          done < $NEWFILES
  
          ls $AVIDIR/*.jpg > $TMPFILE
  
          SUMCHK1=`md5sum $TMPFILE`
  
          SUMCHK2=`md5sum $TMPFILE2`
  
          echo $SUMCHK1
  
          echo $SUMCHK2
  
      done
  
      CHECK=`pgrep ffmpeg`
  
      echo $CHECK
  
  done
  
  
  
  
  
  
  
  # COPY IMAGES WITH A FACE TO FACESDIR
  
  
  
  
  
  # CLEANUP LOGS
  
  #rm $TMPFILE $TMPFILE2 $NEWFILES

• Catch "Unfortunately 'app' has stopped working" Error

  2 juillet 2015, par cadesalaberry

  I am using a very unstable library on Android that crashes sporadically. I start it using the startActivity() in my code.

  The unstable part of the code is doing a lot of video processing and uploading the result to a server. I do not really mind if the activity crashes, but I need to signal the server that it did.

  The crash comes from a memory leak (no time to solve it yet). Is there a way I can catch the error a display a more friendly/funny message instead ?

  try {
  
      context.startActivity(intent);
  
  } catch (ApplicationCrashedException e) {
  
      server.notifyServerOfCrash();
  
      toast("I really disliked your face...");
  
  }

  Edit : Here is the Error :

  java.lang.OutOfMemoryError
  
    at dalvik.system.VMRuntime.newNonMovableArray(Native Method)
  
    at java.nio.MemoryBlock.allocate(MemoryBlock.java:125)
  
    at java.nio.ByteBuffer.allocateDirect(ByteBuffer.java:72)
  
    at io.cine.android.streaming.FFmpegMuxer.writeSampleData(FFmpegMuxer.java:151)
  
    at io.cine.android.streaming.AndroidEncoder.drainEncoder(AndroidEncoder.java:128)
  
    at io.cine.android.streaming.TextureMovieEncoder.handleFrameAvailable(TextureMovieEncoder.java:264)
  
    at io.cine.android.streaming.TextureMovieEncoder$EncoderHandler.handleMessage(TextureMovieEncoder.java:409)
  
    at android.os.Handler.dispatchMessage(Handler.java:102)
  
    at android.os.Looper.loop(Looper.java:136)
  
    at io.cine.android.streaming.TextureMovieEncoder.run(TextureMovieEncoder.java:219)
  
    at java.lang.Thread.run(Thread.java:841)

  For some reason once the BroadcastActivity runs out of memory, the Activity gets killed and comes back to the previous one. It then displays the ’app’ has stopped working Dialog. If I press OK, it kills the entire application and comes back to the home screen.

  Ideally I would just have it come back to the previous activity notifying the server silently. (Not killing the application)