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• configure : Check for DXGI_OUTDUPL_FRAME_INFO for the ddagrab filter

  1er août 2022, par Martin Storsjö

  configure : Check for DXGI_OUTDUPL_FRAME_INFO for the ddagrab filter
  The DXGI_OUTDUPL_FRAME_INFO type isn't available in Windows API
  
  subsets other than "desktop", while the IDXGIOutput1 interface is
  
  available for all API subsets.
  This fixes compilation for UWP/"Windows Store" configurations (and
  
  older API subsets like Windows Phone).
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DH] configure

• Get PID of process in one line

  17 décembre 2017, par Dovid Bender

  I have a bash script that is called by a phone system that gets some audio from a URL and (using ffmpeg, mplayer etc.) then pipes it back to the application. The file can have several URL’s that are called so if the first one say goes off line or gives a 404 it will go to the next line.

  I have an issue where some times the server will produce content however there is no audio. In such a case I want to kill the current PID of ffmpeg, mplayer etc. so that the script should move on.

  I can’t foreground it and get the last PID since once it’s ran in the foreground the media is no longer being piped to the application calling it. I can’t use exec in the beginning since if I then issue a kill to the PID the script dies which I don’t want.

  The script looks something like this :

  #!/bin/bash
  
  
  
  /usr/bin/ffmpeg  -i 'http://1.1.1.1/soft_music' -vn -ar 8000 -ac 1 -f s16le -
  
  /usr/bin/ffmpeg  -i 'http://2.2.2.2/soft_music' -vn -ar 8000 -ac 1 -f s16le -

  I assume I need to add something that will allow me to log the pid of the current ffmpeg command running so my external script can get it and kill it. Once that’s done it will go to the next line and try the next stream from 2.2.2.2

• HTML5 Video Editor in browser [on hold]

  10 juillet 2017, par user8286152

  I want a user to be able to upload a video to the website :

  <input type="file" accept="image/*" /> 

  and from there we are simply overlaying text (that they user inputs from a different view) onto it and stitching together a few images after the video with ffmpeg.

  We need the user to be able to preview the video after they upload it through the code above (whether it’s from their phone’s gallery or they take the video at that moment) and being able to crop the video (square), trim the video (say they only want the timestamp of 5s - 30s of their video), zoom in, etc. And then once they confirm the editing of the video they like, they can upload it to our server and share it, download it, etc. I realize this may be CPU intensive.

  We can set limitations of the video file (i.e. mp4) and size if that’s a problem. But I just cannot seem to find anything open source out there that allows the client to be able to do video manipulation/editing. (If there is nothing open source, is there any other options ?)

  We are using PHP and ffmpeg to do stitching of text overlay,videos, images, etc., if that helps.

  We are in very early stages and mostly in proof of concept, so I don’t have any specific code to show. Let me know if you have any other suggestions of doing this.