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I want to show a logoon a video when the video starts. I already found this command :

ffmpeg -i input.mp4 -framerate 30000/1001 \
-loop 1 -i test.png -filter_complex "[1:v] fade=out:st=30:d=1:alpha=1 [ov];\
 [0:v][ov] overlay=10:10 [v]" -map "[v]" -map 0:a -c:v libx264 \
-c:a copy -shortest Bigout.mp4

from How to add my logo for the first 30 seconds in a video with ffmpeg?

But the problem is my video's widths/heights are different and each time I add a logo, it does not cover the whole video. What should I do if I want to set the logo width/height to the width/height of the video ?

UPDATE After @Behroozfar Answer, I tried to use scale2ref, with the command below:

ffmpeg -i input.mp4 -framerate 30000/1001 -loop 1 -i biglogo.png -filter_complex "[1:v][0:v]scale2ref=iw/1:-1[ovrl][0v]; [0v][ovrl]overlay=0:0[v]" -map "[v] ; [1:v] fade=out:st=2:d=1:alpha=1 [ov]" -map 0:a -c:v libx264 -c:a copy -shortest Bigout.mp4

but the question is , I can't show the logo just for one second. It exists during the whole video play.

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Use scale2ref filter

ffmpeg -i input.mp4 -framerate 30000/1001 \ -loop 1 -i test.png -filter_complex "[1:v]fade=out:st=30:d=1:alpha=1[ov]; \ [ov][0:v]scale2ref[logo][video]; \ [video][logo]overlay=10:10[v]" -map "[v]" -map 0:a -c:v libx264 \ -c:a copy -shortest Bigout.mp4

  • To the OP, note that this will distort the logo if its aspect ratio and the video's aspect is different. – Gyan Oct 12 '16 at 14:21
  • @Mulvya Actually i want to show logo for the first second of the video which cover the whole video frame, and then have the small logo for example in the left corner. I guess I should use two ffmepeg commands for this. One for adding the intro logo and then add the small logo to the video was made before. – MHPalang Oct 12 '16 at 14:48
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To show the full-sized logo for one second and then a small-sized logo afterwards, use

ffmpeg -i input.mp4 -framerate 30000/1001 -loop 1 -i test.png
       -filter_complex
         "[1]fade=out:st=1:d=0.9:alpha=1,trim=0:2[f]; \
          [1]fade=st=2:d=0.5:alpha=1,trim=0:3[s]; \
          [f][0]scale2ref[fs][video];[s][fs]scale2ref=iw/8:-1[ss][fo];
          [video][fo]overlay=eof_action=pass[v0]; \
          [v0][ss]overlay=W-w-5:H-h-5[v]" \
       -map "[v]" -map 0:a -c:v libx264 -c:a copy Bigout.mp4
  • thank you man. I run the command and it said there no f! it seems [of] in your command should have been [f]. and run it again and I dont see any logo in my video. It seems nothing happened to the video – MHPalang Oct 12 '16 at 15:48
  • sorry, [fo] in your command should have been [f]. – MHPalang Oct 12 '16 at 15:50
  • Made corrections. – Gyan Oct 12 '16 at 15:55
  • Thank you. It works fine for the first part. But there is not small logo on the for the second part – MHPalang Oct 12 '16 at 16:02
  • unfortunately your command doesn't work for the second part... and make the video stop at the last two seconds before finish. By the way it may seems a little bit stupid, but I decided to run two commands. first put the intro logo at the beginning and then add the small logo. But when I run your command for the first part, video stops two seconds before finish. – MHPalang Oct 12 '16 at 16:36

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