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• How create video from image and sound (ffmpeg)

  29 novembre 2019, par sibbasa

  I need to make a video out of images and music. I use this code :

  Process process = new Process();
  
  ProcessStartInfo start = new ProcessStartInfo();
  
  start.FileName = @"d:\test\ffmpeg.exe";
  
  string argumets = String.Format("-r 6/1 -i d:\\test\\img\\img%d.jpg -i 
  
  d:\\test\\outfiles\\29112019111455.wav -c:v libx264 -c:a aac -b:a 192k -pix_fmt yuv420p -shortest 
  
  d:\\test\\outfiles\\out.mp4");
  
  Console.WriteLine(argumets);
  
  start.Arguments = argumets;
  
  start.WindowStyle = ProcessWindowStyle.Minimized;
  
  process = Process.Start(start);
  
  process.WaitForExit();
  
  process.Refresh();

  But the video is longer than the audio track.
  If the audio track is 60 seconds and there are 6 images, then each image should last 10 seconds.

  Sorry for my English.

• Documentation #3972 (En cours) : template variants and possible bug ?

  5 juillet 2017, par Kamran Mir Hazar

  Hello,
  The following template variants do not work for me :
  I have section number 101, with articles in fa and en languages in it.
  I have also files article.html for the main site’s language which is fa, and article.en.html for the en language articles. Both work fine in general. I created two other variants to apply articles in section 101 with two separate languages. They are : article=101.fa.html and article=101.en.html .
  SPIP ignores these two variants and proceeds article.html for fa language articles, and article.en.html for en language articles in section 101, like the other sections. I added also article=101.html to see if it works, but didn’t.
  I asked this in French and English mailing lists, but couldn’t find any solution.
  Thank you
  Kamran

  PS : I tried based of the following article :
  https://www.spip.net/en_article4363.html

• ffmpeg add all audio tracks to video conversion (mkv)

  7 mars 2016, par blast1987

  I have a script that takes in input a video file (generally avi or mp4) and converts it to a "lower quality" mkv video optimized for web streaming.

  The ffmpeg command I use is this one :

  ffmpeg -fflags +genpts -i file:"$input" -sn -codec:v:0 libx264 -force_key_frames expr:gte\(t,n_forced*5\) -vf "scale=trunc(min(max(iw\,ih*dar)\,1280)/2)*2:trunc(ow/dar/2)*2" -pix_fmt yuv420p -preset superfast -crf 23 -b:v 1680000 -maxrate 1680000 -bufsize 3360000 -vsync vfr -profile:v high -level 41 -map_metadata -1 -threads 8 -codec:a:0  libmp3lame -ac 2 -ab 320000 -af "aresample=async=1" -y "$output"

  The problem is that this command only includes the first audio track of my video. I have some dual language videos (italian and english) for which I want to include both languages.

  Is there a simple ffmpeg command option that automatically includes all audio tracks found in a video ?