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• Video stream delayed on wowza server and quality is very low from ffmpeg

  13 juin 2013, par tulsi

  Form ffmpeg i fired some command to run video on wowza server

  ffmpeg -i /home/Downloads/GAmUk.mp4  -f mpegts udp:/ip:10000/live/test.stream

  and streaming is running as well only problem is latency not so good its played after long time on server please help me to play fast

• Unable to execute CLI commands through PHP

  13 janvier 2012, par user940154

  OS : ubuntu 11.10
  Webserver : Apache
  Code : PHP
  I am trying to display the output of command "ffmpeg -i " on the webpage using php.
  Required : The webpage should show the information about video (text).
  Whats happening : The webpage shows no text output on running the php code.
  If I was however doing system("ls") the code runs fine and outputs the list of files.
  Here's my code

  <?php
  
   echo "Details of video file:";
  
   system('ffmpeg -i /home/atish/Videos/T2V0040006_Angled_ride_720x576i_FLDCMB.avi');
  
  ?>

  The same command works fine on my shell, and my system has ffmpeg installed. Here's a snapshot of executing this command directly on shell :

  ThinkPad-T420:~/Videos$ ffmpeg -i /home/xx/Videos/T2V0040006_Angled_ride_720x576i_FLDCMB.avi
  
  ffmpeg version git-2012-01-10-7e2ba2d Copyright (c) 2000-2012 the FFmpeg developers
  
  built on Jan 10 2012 12:01:19 with gcc 4.6.1
  
  configuration: --enable-gpl --enable-libfaac --enable-libmp3lame --enable-libopencore-    amrnb --enable-libopencore-amrwb --enable-libtheora --enable-libvorbis --enable-libx264 --enable-nonfree --enable-postproc --enable-version3 --enable-x11grab
  
    libavutil      51. 34.100 / 51. 34.100
  
    libavcodec     53. 54.100 / 53. 54.100
  
    libavformat    53. 29.100 / 53. 29.100
  
    libavdevice    53.  4.100 / 53.  4.100
  
    libavfilter     2. 58.100 /  2. 58.100
  
    libswscale      2.  1.100 /  2.  1.100
  
    libswresample   0.  6.100 /  0.  6.100
  
    libpostproc    51.  2.100 / 51.  2.100
  
    Input #0, avi, from '/home/atish/Videos/T2V0040006_Angled_ride_720x576i_FLDCMB.avi':
  
    Metadata:
  
    encoder         : Lavf52.23.1
  
    Duration: 00:00:29.00, start: 0.000000, bitrate: 124422 kb/s
  
    Stream #0:0: Video: rawvideo (I420 / 0x30323449), yuv420p, 720x576, 25 tbr, 25 tbn, 25 tbc
  
    At least one output file must be specified

  I have tried appending "DISPLAY=:0" to my command and also done "xhost +" before running php code, but nothing is helping me out.

  Thanks.

• encoding .avi file from bytearray using ffmpeg in javacv or java

  24 janvier 2012, par Ashwin Yakkundi

  I have converted an .avi file into byte[]. What I need to do is to convert the byte[] back to the original .avi file in java or javacv preferably using ffmpeg.

  The following is the code I used for conversion from .avi into byte[]

  import com.googlecode.javacv.cpp.opencv_core.IplImage;
  
  import com.googlecode.javacv.CanvasFrame;
  
  import com.googlecode.javacv.FFmpegFrameGrabber;
  
  
  
  import java.io.BufferedInputStream;
  
  import java.io.DataInputStream;
  
  import java.io.File;
  
  import java.io.FileInputStream;
  
  
  
  public class VideoDemoTest1{
  
  
  
      public static void main(String[] args) throws Exception {
  
          String filename = "/home/ashwin/Desktop/cow.avi";
  
  
  
          FileInputStream fis = new FileInputStream (filename);
  
          DataInputStream dis = new DataInputStream(fis);
  
          int length = dis.available();
  
          System.out.println("length of InputStream = " + length);
  
  
  
          byte[] videoByteArray = new byte[(int) length];
  
  
  
          // Read in the bytes
  
          int offset = 0;
  
          int numRead = 0;
  
          while (offset < videoByteArray.length
  
                 && (numRead = dis.read(videoByteArray, offset, videoByteArray.length - offset)) >= 0) {
  
                      offset += numRead;
  
          }
  
  
  
          System.out.println("length of videoByteArray is " + videoByteArray.length);
  
      }
  
  }