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• ffmpeg works from terminal but not by php script

  22 janvier 2019, par Naman Tamrakar

  I have to get the thumbnail image of video i am using the ffmpeg. On my server i run the ffmpeg command from ssh then it is working but from the php exec function it is not working it gives the error /usr/bin/ffmpeg : no such file or dirctory but the ffmpeg is installed on this location usr/bin/ffmpeg.
  my source code is :

  $ffmpeg = '/usr/bin/ffmpeg';
  
  
  
  $videoname = 'myvideo.mp4';
  
  
  
  $video = $_SERVER['DOCUMENT_ROOT'].'/uploads/videos/'.$videoname;
  
  
  
  $image = $_SERVER['DOCUMENT_ROOT'].'/uploads/thumbs/thumb.jpg';
  
  
  
  $second = 1;
  
  
  
  $cmd = "$ffmpeg -i $video -deinterlace -an -ss $second -t 00:00:01 -r 1 -y -vcodec mjpeg -f mjpeg $image 2>&1";
  
  
  
  exec($cmd);

  Please provide any solution.

• Recording audio with FFMPEG works in terminal but not through exec() of PHP

  8 août 2013, par lucasalmeida92

  I use this command to RECORD audio and video from my webcam in terminal and it works !

  ffmpeg -f video4linux2 -r 25 -sameq -s 640x480 -i /dev/video0 -f alsa -i plughw:0,0 -ar 22050 -ab 128k -y webcam.flv

  But when I do it through PHP, like this :

  echo shell_exec('ffmpeg -f video4linux2 -r 25 -sameq -s 640x480 -i /dev/video0 -f alsa -i plughw:0,0 -ar 22050 -ab 128k -y webcam.flv 2>&1 &') ;

  I receive that log :

  ffmpeg version 0.8.6-4:0.8.6-0ubuntu0.12.04.1, Copyright (c) 2000-2013 the Libav developers built on Apr 2 2013 17:02:36 with gcc 4.6.3 * THIS PROGRAM IS DEPRECATED * This program is only provided for compatibility and will be removed in a future release. Please use avconv instead. [video4linux2 @ 0x23579a0] Estimating duration from bitrate, this may be inaccurate Input #0, video4linux2, from '/dev/video0' : Duration : N/A, start : 4868.729067, bitrate : 122880 kb/s Stream #0.0 : Video : rawvideo, yuyv422, 640x480, 122880 kb/s, 25 tbr, 1000k tbn, 25 tbc Home directory /var/www not ours.

  ALSA lib pcm_hw.c:1401 :(_snd_pcm_hw_open) Invalid value for card [alsa @ 0x23589e0] cannot open audio device plughw:0,0 (No such file or directory) plughw:0,0 : Input/output error

  Before I got that Mic device problem I was having problem with the Webcam device's permissions, then i did :

      sudo chmod -R 777 /dev/video0

  And the video capture was ready to be used ! But now I got this Mic device problem !

  I think it can be about permissions too, but I dont know linux very well and have no idea how to fix that !

  Thanks !

  ---

  I just found the solution ! =x

  sudo chmod -R 666 /dev/snd/*

• simple loop saying no file found terminal

  29 mai 2021, par Frodo Baggins

  I have this command which I am trying to find all movie files in all directories, convert them, and remove the original, within all sub directories. It displays the file names but it returns no such file found.

  


  for oggfile in "$(find . -iname '*.mp4' -or -iname '*.avi' -or -iname '*.mov')"
do
ffmpeg -i ${oggfile} -b:a 320000 -vcodec libx264 ${oggfile}_newCompressed.mp4
rm $oggfile
done ```