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• phpvideotoolkit class errors on xampp installed on windows server 2008

  6 mars 2016, par Sourabh Swarnkar

  find i m trying to convert sequence of images into a video. and for that i canme to know about the ffmpeg class.

  the only wrapper class that i found is phpvideotoolkit but i m not able to work with it.

  i installed phpvideotoolkit on xampp on my windows 2008 server . but it is throwing alor of errors

  This example shows you how to extract a specific frame from a movie.
  
  
  
  
  
  Notice: Undefined property: PHPVideoToolkit::$_tmb_directory in C:\xampp\htdocs\phpvideo\phpvideotoolkit.php5.php on line 869
  
  
  
  Notice: Undefined offset: 0 in C:\xampp\htdocs\phpvideo\phpvideotoolkit.php5.php on line 877
  
  PHPVideoToolkit Error: Execute error. Output for file "C:\xampp\htdocs\phpvideo\examples\working\to-be-processed\MOV00007.3gp" was not found. No images were generated.
  
  
  
  Notice: Undefined property: PHPVideoToolkit::$_tmb_directory in C:\xampp\htdocs\phpvideo\phpvideotoolkit.php5.php on line 869
  
  
  
  Notice: Undefined offset: 0 in C:\xampp\htdocs\phpvideo\phpvideotoolkit.php5.php on line 877
  
  PHPVideoToolkit Error: Execute error. Output for file "C:\xampp\htdocs\phpvideo\examples\working\to-be-processed\Video000.3gp" was not found. No images were generated.
  
  
  
  Notice: Undefined property: PHPVideoToolkit::$_tmb_directory in C:\xampp\htdocs\phpvideo\phpvideotoolkit.php5.php on line 869
  
  
  
  Notice: Undefined offset: 0 in C:\xampp\htdocs\phpvideo\phpvideotoolkit.php5.php on line 877
  
  PHPVideoToolkit Error: Execute error. Output for file "C:\xampp\htdocs\phpvideo\examples\working\to-be-processed\cat.mpeg" was not found. No images were generated.

  example

  PHPVideoToolkit Error: Execute error. Output for file "C:\xampp\htdocs\phpvideo\examples\working\tmp\1336156630-4fa421d69357d\tmp_%d.jpg" was not found. Please check server write permissions and/or available codecs compiled with FFmpeg. You can check the encode decode availability by inspecting the output array from PHPVideoToolkit::getFFmpegInfo().

  i m trying to make it work since last many hours but no luck

  Also, for this code :

  $srcFile = "test-mpeg.mpg";
  
  $ffmpegObj = new ffmpeg_movie($srcFile);

  i am gettign error that it cant file the file. i believe its something to do with permissions but i m not able to figure out

  fpoen , fwrite , file_put_contents all are working fine without any permissions problems.

  can anyone please guide me in the write direction. what do i need to do to make this phpvideotoolkit work

• h.264 I-frame loss handling in rtsp streaming

  27 mars 2014, par DSG

  I am developing a player which open rtsp stream using Live555 and using FFMPEG to decode video stream. I am stuck at a point, where IDR frame is getting lost over the network, so that after decoding its successor B/P frames, it shows a jittering effect in video. It gives a very bad performance in video.

  So my question is, How can I handle I-frame packet loss ? I would like to know if there is any strategy/algorithm to handle packet loss, so that video should be smooth or clear.

  Any help will be appreciated.
  Thank You.

• How to check 'Output bit depth' of the libx264 library in ffmpeg ?

  25 mars 2014, par Amiramix

  According to the x264 Encoding Guide, the crf scale depends on whether x264 is 8-bit or 10-bit. Supposedly x264 --help shows the Output bit depth. But on Windows ffmpeg -h full doesn't say anything about Output bit depth and the crf scale option is described as from -1 to FLT_MAX. How can I check if my ffmpeg is using 8-bit or 10-bit version of the libx264 library ?