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• With ffmpeg print onto clipped video hh:mm:ss time *from original* and hh:mm:ss total duration from original

  25 mai 2023, par Kes

  I am using arch linux and bash and ffmpeg, all are up to date and the latest versions.

  


  I am clipping a video that is 30 seconds long and wish to clip from 5 secs to 10 seconds to a new file, from the original.

  


  In the bottom right hand corner of the clip I wish to show timestamps from the original video as follows

  


  

  • in the 5th second "00:00:05/ 00:00:30"

  


  • in the 6th second "00:00:06/ 00:00:30"
    
etc

  


  • in the 10th second "00:00:10/ 00:00:30"

  


  


  This is an apparentley simple question(?) but the syntax of the command is not at all obvious and I am hoping an expert may shed some light on this.

  


  All I have so far for the drawtext part, which does not do what I want as it only counts the elapsed time from t=0 of the new clip, whereas I want it to show the timestamp and total duration of the original clip

  


  drawtext I started with

  


  "drawtext=text='%{pts\:gmtime\:0\:%M\\\\\:%S}':fontsize=24:fontcolor=black:x=(w-text_w-10):y=(h-text_h-10)"


  


  ffmpeg line with drawtext I have started with

  


  ffmpeg -ss 00:00:05 -i  "$in_file" -filter_complex "drawtext=fontfile=font.ttf:text='sample text':x=10:y=10:fontsize=12:fontcolor=white:box=1:boxcolor=black@0.5:boxborderw=5,drawtext=text='%{duration\:hms}':fontsize=12:fontcolor=black:x=(w-text_w-10):y=(h-text_h-10)" -t 5 -c:a copy -c:v libx264 out_file.mp4


  


• Continuously play the gif on image using FFmpeg

  20 février 2020, par Shweta Patil

  I am trying to place multiple gif on image and save as gif using FFmpeg. I had achieved placing of multiple gif but all gif doesnot play continuously i.e Second gif repeat only once first gif finish and started again ..the second gif stop and start again only when first gif finishes.

  command_try[0]="-i";
  
      command_try[1]=input;
  
      command_try[2]="-i";
  
      command_try[3]=gifthumbnail;
  
      command_try[4]="-i";
  
      command_try[5]=gifthumbnail;
  
      command_try[6]="-i";
  
      command_try[7]=thumbnail;
  
      command_try[8]="-i";
  
      command_try[9]=thumbnail2;
  
      command_try[10]="-filter_complex";
  
      command_try[11]="[0:v]scale=0:0[base];[1:v]scale=300:-1[img1];[2:v]scale=720:-1290[img2];[3:v]scale=80:-1[img3];[4:v]scale=50:-1[img4];[img1]rotate=45:c=black@0:ow=rotw(45):oh=roth(45)[r1];[img2]rotate=0:c=black@0:ow=rotw(0):oh=roth(0)[r2];" +
  
              "[img3]rotate=0:c=black@0:ow=rotw(0):oh=roth(0)[r3];[img4]rotate=0:c=black@0:ow=rotw(0):oh=roth(0)[r4];[base][r1]overlay=100:70[tmp1];"+
  
              "[tmp1][r2]overlay=55:55[tmp2];[tmp2][r3]overlay=65:65[tmp3];[tmp3][r4]overlay=30:30";
  
  
  
      command_try[12]="-preset";
  
      command_try[13]="veryfast";
  
      command_try[14]="/storage/emulated/0/Pictures/imggif.gif";

  As I am recently started working on FFmpeg need help to play gif continuously independently.

• Delphi : how to capture COLORED output of the application ?

  22 juin 2013, par John Smith

  I saw several way to capture the output of the started application. But all they were "monochrome" solution, for example FFMPEG may produce coloured output. How to catch the color ?