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• Android video trimming via ffmpeg

  9 juin 2014, par Karan_Rana

  I have downloaded video trimming code from github from this link.

  It’s working perfectly for the first time, but when I try to run it for the second time the code crashes without any exception then again when I try to run it for the 3rd time after the crash it works !
  Does any one have any idea for this kind of behaviour ?

  I am also developing an application which has one module of trimming videos.
  I would really appreciate it, if any one could help me .

• Capturing snapshot using vlc

  28 mars 2012, par Saurabh Gandhi

  I am using the VLM feature (over telnet) of VLC to re-stream a live camera RTSP stream using VOD (video on demand). This provides me with two options of viewing the live stream :

  1. Original camera stream
  2. VOD stream generated using VLM

  Both these streams are working fine when viewed within VLC player. I would like to take a snapshot from both these streams whenever the user presses a key. So, I am using command-line vlc interface to grab a snapshot, the command for which is :

  • Snapshot from original camera stream (Case I)

  cvlc -V dummy --video-filter scene --scene-format jpeg --scene-prefix myscene --start-time=0 --stop-time=1 --scene-replace --scene-path /var/www/ <original camera="camera" stream="stream"> vlc://quit;
  
  </original>

  • Snapshot from VOD stream (Case II)

  cvlc -V dummy --video-filter scene --scene-format jpeg --scene-prefix myscene --start-time=0 --stop-time=1 --scene-replace --scene-path /var/www/ <vod stream="stream" generated="generated" using="using" vlm="vlm"> vlc://quit;
  
  </vod>

  Now, case I seems to work fine but case II does not work, in-spite of confirming that both the live streams are working fine. What could be the problem ?

  Here are the logs of VLC when case II is executed on command-line :

  saurabh@saurabh-Latitude-E5510:~/Desktop/html_trial$ cvlc -V dummy --video-filter scene --scene-format jpeg --scene-prefix myscene --start-time=0 --stop-time=1 --scene-replace --scene-path /var/www/ rtsp://10.17.1.150:5544/vid1 vlc://quit; 
  
  
  
  VLC media player 1.1.9 The Luggage (revision exported) 
  
  Blocked: call to unsetenv("DBUS_ACTIVATION_ADDRESS") 
  
  Blocked: call to unsetenv("DBUS_ACTIVATION_BUS_TYPE") 
  
  [0x97c684c] dummy interface: using the dummy interface module... 
  
  rc buffer underflow 
  
  rc buffer underflow 
  
  rc buffer underflow 
  
  rc buffer underflow 
  
  ^C[0x97be2ac] signals interface error: Caught Interrupt signal, exiting...

  Regards,

  Saurabh Gandhi

• unable to load PHP_ffmpeg.dll

  2 mars 2012, par Alexis Zenigata

  Been trying to make this work but no luck.

  I always get

  PHP Warning : PHP Startup : Unable to load dynamic library 'C :\xampp\php\ext\php_ffmpeg.dll' - The specified module could not be found.

  1. Using XAMPP 1.7.4 on a Windows 7 64 Bit Computer.
  2. Tried several php_ffmpeg.dll files restart but I still encounter the error.
  3. Made sure that the dll is in C :\xampp\php\ext and copied the other DLL's on both system32 and SysWOW 64.
  4. Was previously using the newest version of WAMPP but no luck so decided to go to XAMPP with a lower version.

  If this doesn't work is there any other scripts I can use for converting uploaded audio files besides using FFMPEG ? uploaded Audio files has a .wav extension..

  Thanks