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• ffmpeg : zoom over a squared image

  23 février 2017, par Sulli

  I am using this command to create a zoom effect over a square image :

  ffmpeg -r 25 -i image.jpg -filter_complex "scale=-1:10*ih,zoompan=z='min(zoom+0.0015,1.5)':d=125:x='iw/2-(iw/zoom/2)':y='ih/2-(ih/zoom/2)',scale=-1:720"  -y -shortest -c:v libx264 -pix_fmt yuv420p output.mp4 

  it works great, except the video is not squared at the end, it’s a regular 16/9. I tried to play with the scale parameter but the video becomes stuttered every time I change something.

• panning and zooming multiple images with ffmpeg

  16 mars 2017, par user1796752

  I have multiple images that I want to fade and zoompan for each image but when I do what others have said, the first image works perfect and the second is black. I want to have 25 images and the same thing occurs with every image black except the first one. I am sure I am missing something elementary. Please help.

  ffmpeg -r .1 -i image_1.jpg -i image_2.jpg -vf "zoompan=z='min(zoom+0.0015,1.5)':d=125,fade=t=in:st=0:d=0.5,fade=t=out:st=4.5:d=0.5"  -pix_fmt yuv420p output.mp4

• In ffmpeg how to keep text same location while filtering like zooming ?

  12 juillet 2019, par No_0n3

  In ffmpeg how do I keep the text in the same location while filtering ? e.g. zooming

  FFmpeg for linux

  ffmpeg 
  
  -t 5 
  
  -i x.jpg -filter_complex "[0:v]drawtext=fontfile='ariblk.ttf':text='test text':fontsize=24:x=0.23333333333333*main_w: y=0.1325*main_h:fontcolor=#000000: alpha=1,zoompan=z='if(lte(zoom,1.0),1.5,max(1.001,zoom-0.0015))':d=125,fade=t=out:st=4:d=1[v0]; [v0]concat=n=1:v=1:a=0,format=yuv420p[v]" 
  
  -map "[v]" 
  
  -s "800x450" 
  
  -t 40 ./video.mp4

  The text is zoomed in as well but I want it to keep the same size.