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• How to get rec script of SOX to work on Android ?

  1er mai 2013, par Arif Nadeem

  I built sox for Android and I am using the generated binary files i.e. sox, rec, play and soxi generated directly in my app by installing them as binaries within my app.

  I am able to invoke commands using sox directly however I have a problem in invoking rec command.

  I used the following command, rec -r 8000 -c 2 output.wav
  But it fails saying that sox is not found or sox is expected but is not found.

  The above rec command works perfectly in Ubuntu when I use it in command line

  Please note that I am able to use operation related to sox binary successfully, but I am unable to use commands related to rec binary.

  Initially I thought the problem may be because of permissions imposed by Android so I included these permissions in manifest.xml but to no avail.

  I did some research and got this link, it says in section Using Sox to Play and Record that there might be some Linux systems which do not accept rec command directly.

  I followed his suggestion and appended my commands with padsp etc, but it still doesn't work.

  So my question is how do I invoke rec command successfully on Android system, has anyone tried this before ?

• exec() does not return to PHP process

  24 avril 2013, par Ivo Renkema

  I am running FFMPEG from PHP with the EXEC command. I am working on a XAMP stack.

  $command = 'ffmpeg -y -i input output 2>logfile';
  
  exec ($command);
  
  // after FFMPEG handling...

  As you can see, I am redirecting FFMPEG's output to a log file.

  This works fine from smaller video files (up to approximately 10 MB).

  My problem is that for larger video files, any PHP commands after the exec() will not get executed. Note however, that the FFMPEG process works just fine. The log file shows that FFMPEG terminates OK, and the resulting output file is also good.

  My max_execution_time is set to 10800, which should be plenty (and then some). Anyway, as I understand from max_time_limit :

  The set_time_limit() function and the configuration directive
  max_execution_time only affect the execution time of the script
  itself. Any time spent on activity that happens outside the execution
  of the script such as system calls using system() ... is not included
  when determining the maximum time that the script has been running.

  Update : error logs state : Premature end of script

  What is going on ?

• rtmpproto : Move the flv header/trailer addition to append_flv_data

  3 octobre 2013, par Martin Storsjö

  rtmpproto : Move the flv header/trailer addition to append_flv_data
  update_offset is also called from handle_metadata, where the
  
  packet header sizes is already included in the size.
  Previously this lead to flv_data/flv_size including 15 uninitialized
  
  bytes at the end after each call to handle_metadata, making the
  
  flv demuxer lose sync with the stream.
  Also remove leftover copying in handle_metadata. This is a leftover
  
  from the refactoring in 5840473. (Previously this final mempcy was
  
  the one that copied all the packets at once, while this is done
  
  within the loop right now.) After making sure flv_size is set to
  
  the right size, this write was out of bounds.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] libavformat/rtmpproto.c