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• ffmpeg : use drawtext with quote inside text

  18 octobre 2023, par Sulli

  I have a variable that takes its content from a file (I can't change the content of the file) :

  



  echo $variable
It's my variable


  



  I want to print that string on a video with ffmpeg :

  



  ffmpeg -nostdin -i input.mp4 -vf drawtext="text='$variable': fontcolor=white:box=1:boxcolor=black@0.8: x=h/70: y=h/5*4.2" -codec:a copy output.mp4


  



  when I do that, the quote inside $variable is not printed. I have read here that I need to escape the quote multiple times, some say 5 times, some say more.

  



  So I have tried to use

  



  variable=${variable//\'/'\\\\\'\'}


  



  to add between 1 and 10 backslashes, but it never worked : either nothing is printed, or \ are printed :

  



  It\s my variable


  



  Can someone tell me what is the correct syntax, or the correct number of backslashes I should add ?

  


• choosing outbound IP (eth0 or eth1) in FFMPEG

  4 septembre 2018, par Ba Ta

  I have 2 IP addresses on my server.

  $curl --interface eth0 ifconfig.co      
  
  111.111.111.111
  
  
  
   $curl --interface eth0:0 ifconfig.co      
  
  222.222.222.222

  So via curl I can switch via interfaces so my IP address changes when I visit any url based on eth IP

  How can I use same thing via ffmpeg ?

  For example, if want to access this video via ffmpeg (it uses 111.111.111.111 to access it)

   ffmpeg -i 123.com/video.mp4

  how can I access same video from my second IP 222.222.222.222 ?

  Is there any command like this, perhaps ?

  ffmpeg --interface eth0:0  -i 123.com/video.mp4

• I want to use C# to get the first frame of a video as a preview image of the video without using ffmpeg to achieve it [closed]

  19 avril 2023, par anton

  I have some video files here. My client asked me to edit and format these video files and some text content and display them. Of course, C# is required. Since ffmpeg has 100+ mb, it's too big. Is there any other alternative or other more portable three-party library ?

  


  I'm using ffmpeg now, but it's too big, it needs to be started from the command line, and it can't be packaged perfectly with fody.

  


  I wonder if there is a more lightweight or embedded way to replace it to get the first frame of the video as a preview of the video

  


  I'm using winform not WPF