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• Cannot play the video encoded using ffmpeg command [on hold]

  26 juin 2013, par user2523824

  I have been struggling to play the videos encoded using ffmpeg command in PHP.
  Please see the URL
  The JW Player doesn't work on the Firefox 21.0 for Windows7 64 Bit.
  And also,
  Sometimes, When I upload any video and encode by ffmpeg command, some of the videos doesn't be play on the Chrome, IE9/10.
  Here is the ffmpeg command to encode.

  <code>
  
  //////////////////I tried the command in PHP//////////////////////
  
  $cmd = "ffmpeg -y -i original.wmv -vcodec libx264  -crf 25 -pix_fmt yuv420p -acodec libfaac new.mp4 > /dev/null 2>&amp;1";
  
  echo shell_exec($cmd);
  
  //////////////////////////////////////////////////////////////////
  
  

  How do I have to implement the ffmpeg command to play within all the browser ?
  Please help me.

  Kind regards
  Niao Jina

• Capture live video from a camera on a computer and using ffmpeg

  21 juin 2013, par Devendra

  I am trying to capture live video from a camera on a computer and using ffmpeg as an encoder, send this video for live streaming to a IIS server.

  Here is what I did :

  1. Captured feed from webcam using video4linux2 and ffmpeg

  2. Installed x264 for a h.264 codec

  3. Used muxer feature in ffmpeg, as described on this link -
     http://www.ffmpeg.org/ffmpeg-formats.html#Muxers
     to generate ismv file locally
     Command -
     ffmpeg -f video4linux2 -r 25 -s 640x480 -i /dev/video0 -b:v 661k -c:v libx264 -movflags isml+frag_keyframe+empty_moov -f ismv test.ismv

  4. Now to get the complete system in place (live capture from webcam and live streaming on IIS server), I want ffmpeg to generate this ffmpeg file on a publish point. here is the command I used
     ffmpeg -f video4linux2 -r 25 -s 640x480 -i /dev/video0 -b:v 661k -c:v libx264 -movflags isml+frag_keyframe+empty_moov -f ismv http://www.MY-SERVER/PushToPublishPoint/Test.isml

  as described at this link :

  http://www.unified-streaming.com/support/documentation/content-delivery/publishing-points/
  http://www.unified-streaming.com/support/documentation/content-encoding/encoders/

  It shows some video is being generated, but I cannot see any activity at the server.

  When I use wireshark to look at the packet info, there are many packet transfers between pc and the server.

  I have kept publishing point in IDLE state, STARTING state to see if that is the problem, but no progress there as well.
  I think I am unable to establish communication with the server. Pls help.

  Any help would be appreciated.

  Thanks

• ffmpeg-how to add text to video without encoding [on hold]

  27 décembre 2013, par user3139491

  I want to add text to video without encoding.how to do this.
  I create this code

  ffmpeg -i file.mov -vf drawtext="fontfile=/usr/share/fonts/truetype/ttf-dejavu/DejaVuSerif.ttf:text='Text to write':fontsize=20:fontcolor=black:x=100:y=100" final.mov

  this code word well but the cpu hit the peak.
  so only want to do this without encoding.
  is -vcodec copy map can be used ????