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• ffmpeg add overlay image to command with already drawtext

  29 octobre 2020, par fedep11

  I have two ffmpeg commands I would like to add an overlay image to both :

  


  ffmpeg -i "video.mp4" -filter_complex "drawtext=textfile=sub.txt:fontfile=SourceSansPro-Bold.ttf:fontcolor=white:fontsize=100: box=1: boxcolor=black@0.5: boxborderw=5: x=200:y=h-th-200:enable='between(t,1,9)',fade=t=in:start_time=1:d=1:alpha=1,fade=t=out:start_time=8:d=1:alpha=1[fg];[0][fg]overlay=format=auto,format=yuv420p" -an -vcodec libx264 -r 25 -crf 17 -aspect 16/9 out.mp4

ffmpeg -i "video.mp4" -filter_complex "color=black@0:100x100,format=yuva444p[c]; [c][0]scale2ref[ct][mv0];[ct]setsar=1,split=4[t1][t2][t3][t4];[t1]drawtext=textfile=1.txt:fontfile=SourceSansPro-Bold.ttf:fontsize=100:fontcolor=white: box=1: boxcolor=black@0.5: boxborderw=5: x=200:y=h-th-200,fade=t=in:st=1:d=1:alpha=1,fade=t=out:st=7:d=1:alpha=1[txta1];[t2]drawtext=textfile=2.txt:fontfile=SourceSansPro-Bold.ttf:fontsize=100:fontcolor=white: box=1: boxcolor=black@0.5: boxborderw=5: x=200:y=h-th-200,fade=t=in:st=9:d=1:alpha=1,fade=t=out:st=15:d=1:alpha=1[txta2];[t3]drawtext=textfile=3.txt:fontfile=SourceSansPro-Bold.ttf:fontsize=100:fontcolor=white: box=1: boxcolor=black@0.5: boxborderw=5: x=200:y=h-th-200,fade=t=in:st=17:d=1:alpha=1,fade=t=out:st=24:d=1:alpha=1[txta3];[t4]drawtext=textfile=4.txt:fontfile=SourceSansPro-Bold.ttf:fontsize=100:fontcolor=white: box=1: boxcolor=black@0.5: boxborderw=5: x=200:y=h-th-200,fade=t=in:st=26:d=1:alpha=1,fade=t=out:st=28:d=1:alpha=1[txta4];[mv0][txta1]overlay=x='0':y='0':shortest=1[mv1];[mv1][txta2]overlay=x='0':y='0':shortest=1[mv2];[mv2][txta3]overlay=x='0':y='0':shortest=1[mv3];[mv3][txta4]overlay=x='0':y='0':shortest=1" -an -vcodec libx264 -r 25 -crf 17 -aspect 16/9 out.mp4


  


• ffmpeg - Understand images to video output, players show different images and lengths

  8 juillet 2023, par Matt C

  I'm using multiple images to create a video with each image on a 1-second long frame. This is the command I'm using :

  


   ffmpeg -framerate 1 -i 'image%d.jpg' -c:v libx264 -r 1 -pix_fmt yuv420p out.mp4


  


  This seems straightforward and exactly what many others have done with success. However, the output I get is an mp4 which windows file explorer says is 4 seconds long, and is different in VLC and Windows media player and neither is the desired output.

  


  In Windows : the video plays for 4 seconds with a black screen and at this point the time line at the bottom is filled up at 4 seconds, indicating the video is over. But it keeps playing, for another 4 seconds. And the last 4 seconds (from 0:04 to 0:07) is actually the desired output.

  


  





  


  


  


  


  



  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  Frame	Image
  1	black screen
  2	black screen
  3	black screen
  4	black screen
  5	image1.jpg
  6	image2.jpg
  7	image3.jpg
  8	image4.jpg

  


  


  In VLC : the video shows last image supplied as input for 3 seconds, followed by the second to last image for 1 second.

  


  





  


  


  


  


  



  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  


  Frame	Image
  1	image4.jpg
  2	image4.jpg
  3	image4.jpg
  4	image3.jpg

  


  


  Questions :

  


  

  1. How/Why are these different in different players ?

  


  2. Why, in VLC, are only two images showing up, and why would one of them last for 3 seconds ?

  


  3. In Windows, why/how is the video 8 seconds long but shows up as 4 seconds both in the file explorer and in the actual media player ?

  


  4. How do I get the desired output, and what caused my case to not work as it did for seemingly most others ?

  


  


• How to make overlay not hidden under pad area

  26 juin 2023, par Yousuf Essa

  i have the following command where i want overlay two images above image

  


   String command = '-y -i $backgroundImage1 -i $overlayImage1 -i $overlayImage2  -filter_complex '
                  '"[1]scale=600:600[i1];'
                  '[2]scale=600:600[i2];'
                  '[0][i1]overlay=1200:1200[01];'
                  '[01][i2]overlay=800:800'
                  ',pad=width=iw:height=ih+1000:x=0:y=0:color=black'
                  '" $outPutPath';


  


  Now i notice if i position one of the overlay to be within the black pad area that i made so it be hidden behind it , how to solve, so the overlay on top pad ?

  


  if anyone could help so kindly edit my full command because i just start to learn ffmpeg , thanks