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• execute shell command on php [duplicate]

  27 juin 2015, par Jaspreet Singh

  This question already has an answer here :

  • How can I debug exec() problems ?
    
    3 answers
    

  $command = "ffmpeg -i '" . $img_full_name . "' -vf scale=200:200 '" . $img_thumb_name . "'" ;
  
  
  
      $output=shell_exec($command);   
  
      echo $output;
  
      die;

  I am using this code to execute command in php but it gives me blank out put. Same command works if I Directly execute it on ssh.

• nested loop that contain 3 loops in bash shell

  17 juin 2015, par Tareq Suheimat

  I want to make a nested loop that contain 3 loops in order to make some test on videos using ffserver and ffmpeg also the netem.
  so the first loop must contain the percentage numbers of the bit error like 0.2 0.4 0.6 0.8 and do the following command #tc qdisc change dev eth0 root netem corrupt 0.1% ,then for each one of the bit error another loop to make it for more than one time like a number of trails = 10 and for each try the following command must be done ffmpeg -i rtsp ://localhost:7654/test1-rtsp.mpg -acodec copy -vcodec copy output.mp4

  please people help me it’s urgent !!!

• Ffmpeg cannot use the text having white space, while adding a text over a video

  13 août 2018, par Shubham Kamlapuri

  I am using ffmpeg to add text over a video, the text can be more than one also. The problem i am facing is with the text having white spaces, ffmpeg is showing the invalid argument.

  My command is like this :-

  ffmpeg -i input -filter_complex drawtext=fontfile=fontpath:fontcolor=0x000000ff:fontsize=121.26316137279886:shadowcolor=0xffffffff:shadowx=0:shadowy=0:bordercolor=0xffffffff:borderw=0:box=1:boxcolor=0x00000000:boxborderw=30:x=284.73258578742804:y=703.5501114572116:enable='between(t,0,9)':text='hello hello' -c:v libx264 -preset ultrafast output

  Error i am facing :

  ffmpeg : Unable to find a suitable output format for ’hello’’

  ffmpeg : hello’ : Invalid argument

  If i am entering text without spaces, it is working perfectly fine, but things are not good with text having spaces. I am stuck at this point from last 2 days, If anybody can help me, will be very helpful !