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• Convert animated GIF to MP4 in PHP [on hold]

  26 juillet 2014, par user3878839

  How do I do that ? I only know that you’d use FFMPEG, but I don’t know exactly how. Also, in the process, can I resize the images and set the video’s frame rate ? By the way, I have imagick if that helps.

• FFMPEG How to apply subtitles [ass] on a live video stream

  19 août 2014, par Lewisou

  I am going to develop a camera recording application.

  One of the feature is to apply subtitles while recording. Users can key in subtitles on the camera preview screen when the camera is recording.

  I know I can apply the subtitles after the record is finished by running :

  ffmpeg -i ./file.mp4 -c:v libx264 -c:a copy -vf "ass=t.ass" out.mp4

  but which takes a very long time. So it will be better to do it on the fly (while recording a video).

  Notice : the subtitle itself is also a live-stream.

  Any one help ?

• How can i write a tool that acquires video/audio from my input video card ? [on hold]

  21 juillet 2014, par user3180895

  i’d like to write a simple program that can read audio and video from my input card and can save it in a file.

  I’d like to write it in Java, but if it is not possible, i can change language.
  I tried to use ffmpeg, but my device has crossbar limitations.

  My question is :

  Exists one library which can read input buffer from my device and save it in a file ?

  Can someone post a "Hello World" code for a simple example ?

  Thanks a lot.

  P.S. I am actual working with Windows.