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• Reading RTCP packets from an IP camera using FFMPEG

  20 février 2014, par Dídac Pérez

  I am using ffmpeg C++ library. I need to intercept RTCP packets from the camera in order to get the timestamp from the Sender Report. Is there any method or structure in the ffmpeg that gives me this information? I am completely stuck but I am not able to solve that problem.

  Any help will be appreciate. Thanks in advance,

• FFMPEG Overlay not display when position increased

  20 février 2014, par user1250758

  I'm trying to create a video using ffmpeg using a background image, a centered main image and an audio file. All is working fine until I try to position the centered image where I want it, it seems to work with smaller x values correctly but when I increase it to the 290px required to center it it vanishes from the video completely. When set to 100 it displays correctly positioned 100px from the left. Command below, any ideas?

  ffmpeg -loop 1  -i background_1280x720.jpg  -i foreground_1000x1000.jpg -filter_complex "[0] scale=1280x720; [1] scale=500x500 [over]; [0][over] overlay=290:0"  -ss 30  -i audio.wav  -af afade=t=in:st=0:d=20  -t 40   -c:v libx264 -c:a aac -strict experimental -b:a 192k -shortest -pix_fmt yuv420p -s 1280x720 test.mp4
  

  When I change it to overlay=100:0 instead of overlay=290:0 all works as expected. Just to add the background image is already correctly sized but the foreground image is oversized and being scaled to 500x500.

• Using ffmpeg break input file into 10min clips

  20 février 2014, par user3252877

  I'm using a Axis ip camera and i was successfully recording a video into path using FFMPeg with command ffmpeg -i rtsp://username:password@[camip]:rtspport/axis-media/media.amp -qscale 4 /path/to/output/file.mpeg

  now i would like to save a video clip using the same(FFMPEG) in 10 minutes video clips like break the video after every 10 min.

  is FFMPEG best option for that or suggest me any other(opensource) tool.

  thanks in adavnace.

• Convert video on android using JNI

  20 février 2014, par user3292775

  I have loaded all the ffmpeg files on my application and everything is working fine. Now I am struggling to convert a video to a different format using the JNI. Anyone knows how can i convert a video with this library or what methods should i use?

• PHP-FFMpeg prerequisites

  20 février 2014, par Jesse Adam

  I'm attempting to implement https://github.com/PHP-FFMpeg/PHP-FFMpeg

  I copied the src/FFMpeg folder to my includes folder and made sure my autoloader knows where to find everything.

  as a test I made a script that simply does:

  $ffmpeg = FFMpeg\FFMpeg::create();
  $video = $ffmpeg->open('video.mpg');
  

  I get:

  Fatal error: Class 'Doctrine\Common\Cache\ArrayCache' not found in /var/www/php/include/FFMpeg/FFProbe.php on line 203 
  

  My question is: does PHP-FFMPeg require Doctrine, because that is not stated in the documentation. What version do I need? Are there other prerequisites?

  I could create a new question for this, but I'm not sure if I should. I now have PHP-ffmpeg implemented. I'm using Laravel, however that should be irrelevant for this question. I'm trying to enable progress monitoring. It works, however I need to pass in an ID so I can update the correct key in memcache.

  $id = 12345;
  $format->on('progress', function ($audio, $format, $percentage) {
      //this works perfect, but doesn't tell me which item is being updated 
      Cache::put("progress", $percentage,  .25);
  
      //this does not work as I am unable to pass in $id, if I add it as the 4th argument above it will display the number of threads or something
      //Cache::put("{$id}_progress", $percentage,  .25);          
  });
  

  I need clarification on the "on" method. I looked through https://ffmpeg-php.readthedocs.org/en/latest/_static/API/ and was not able to figure out how this method works. Any help would be appreciated.