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• which video tool we can use for making a video hosting server on linux

  19 janvier 2017, par Satinder Singh

  I am searching for video tools which I can use for make a server for video conference and as well as recording . Can anybody help which is high performance tool for video server .

• Does simple rescaling from 1080p to frame height of 720 lead to 720p ?

  12 août 2015, par nburk

  I want to convert a 1080p to 720p and also lower resolutions eventually.

  I have been using ffmpeg for all my video processing activities so far, and would simply approach this task using the following command :

  ffmpeg -i tos.mov -vf scale=-1:720 tos_0x720.mov

  I understand that this will rescale my video to a new frame size having 720 pixels set as a fixed height and the width dynamically calculated.

  What I am not sure about are the implications regarding the quality factors of the video when using ffmpeg this way.

  1. Is it valid to assume that running this command will output a perfect HD 720p quality video ?
  2. What would be a benefit of using dedicated video conversion software to accomplish my goal compared to running the above command ?

• ffprobe failed to execute command

  31 août 2020, par Ted Bed

  I'm trying to get a frame from a video in a temp location but I get an error like this :

  


  Uncaught Alchemy\BinaryDriver\Exception\ExecutionFailureException: ffprobe failed to execute command '/usr/bin/ffprobe' '/tmp/phpfwEh9u' 


  


  Which is weird because I have another script that does the exact same thing but there is no error. Are there any reasons for why this could be happening ? Could there be any factors causing this in my script :

  


  $sec = 1;
$movie =  $filentmpname;
$thumbnail = 'thumbnail_uploads/' . $imfileid;

$ffmpeg = FFMpeg\FFMpeg::create();
$video = $ffmpeg->open($movie);
$frame = $video->frame(FFMpeg\Coordinate\TimeCode::fromSeconds($sec));
$frame->save($thumbnail);