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• FFMPEG linux how to get the total time duration of a folder containing videos ?

  3 octobre 2015, par Andrea Turco

  i need to get the total count of video times in a folder

  I need to generate a file .txt that export just the total time of the videos in the folder in the format :

  HH:MM:SS

  Actually with this script i get just the duration of single files splitted..i need just single output in the file video_times.txt with the total duration.

  videos=( "/home/videos")
  
  default_ext=( mp4 avi )
  
  dump_file=./video_times.txt
  
  
  
  # parameters or default values?
  
  (( $#==0 )) && ext=( "${default_ext[@]}" ) || ext=( "$@" )
  
  echo "locations: ${videos[@]/$HOME/~}"
  
  echo "extensions: ${ext[@]}"
  
  
  
  for(( i=0; i<${#ext[@]}; i++ ))
  
  do 
  
    (( i>0 )) && find_params+=( -o )
  
    find_params+=( -iname '*.'${ext[$i]} )
  
  done
  
  find_params=( '(' "${find_params[@]}" ')' )
  
  
  
  rm "$dump_file" 2>/dev/null
  
  
  
  while IFS= read -rd '' f
  
  do
  
    echo "$(( ++n )): $f"
  
    # time in original HH:MM:SS.ms format and in SSSSSS.ms
  
    ffmpeg -i "$f" 2>&1 | awk '/Duration:/ {split($2, t, ":|,"); print $2 t[1]*3600+t[2]*60+t[3]; }' >> "$dump_file"
  
  done < <( find "${videos[@]}" "${find_params[@]}" -print0 )
  
  
  
  awk -F, '    {
  
                 total=$2;
  
           #  printing numbers during work
  
           #      printf("%+10.2f\t(%10.2f)\n", $2, total );
  
               }
  
           END {
  
           #      print "-----------------------------";
  
                 printf( "%.2f seconds in %d files\n", total, NR );
  
                 h=total/3600; total%=3600;
  
                 m=total/60; total%=60;
  
                 printf( "%02d:%02d:%s\n", h, m, total )
  
               }' "$dump_file"

• FFMPEG : Auto restart the script when stuck

  25 mai 2020, par F O X

  i'm running various scripts with ffmpeg like streaming on youtube, recording camera ip etc.
Sometimes my running scripts just stuck or stop working, there is no info about any errors or smth, they just got stuck, numbers doesn't change and i need to login to my server and click ctrl+z to stop it and then run it again.

  



  So... is there any way to make it automatic ?

  



  I tried many solutions founded in the web but most of them are based on errors but my scripts usually dont show any errors, they just stuck.

  



  I'm using Raspbian OS on Raspberry 3b+

  


• FFmpeg make video from figures and speed up a chosen part

  11 juin 2020, par user13720066

  Make a video from a series of 100 figures

  



  ffmpeg -framerate 10 -i input_figure%01d.png out.mp4


  



  How can I only make figure numbers from [0-49] with a slower speed like -framerate 5 ?

  



  My try is

  



  ffmpeg -start_number 1 -framerate 5 -i input_figure%01d.png -vframes 49 \
-start_number 50 -framerate 10 -i input_figure%01d.png \
out.mp4 


  



  Doesn't work