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• Fade in image on existing video [closed]

  2 décembre 2024, par csphmay

  I'm currently trying to create a video which has a background image and a mp3 set for background audio and now I want to achieve to add a second image which fades in over 5 seconds. The result should be a video where the background image is shown and the second image is laying over it (The second image is basically a logo which I would like to place in the bottom right corner).

  


  To this point I wasn't able to achieve the result described above with a single FFMPEG command.
With the following two commands I generate the video with the first background image and with the second command I try to add the overlay which should fade in from 0-5 seconds. Unfortunately the second video will be black for the first 5 seconds and afterwards just the background image fades in from 5-10 seconds and the overlay is not even shown.

  


  ffmpeg -framerate 25 -loop 1 -t 00:04:52 -i background.jpg -i wedding.mp3 -c:v libx264 -c:a aac -pix_fmt yuv420p -shortest -y part1.mp4


  


  ffmpeg -i part1.mp4 -framerate 25 -loop 1 -t 00:04:52 -i overlay.png -filter_complex "[0:v][1:v]overlay=enable='between(t,5,4.52)':shortest=1,fade=t=in:st=5:d=5[v]" -map "[v]" -map 0:a -c:v libx264 -c:a aac -pix_fmt yuv420p -y output.mp4


  


  Is there a way to make this work with FFMPEG (at best only with one command) ?

  


• ffmpeg Apply overlay without streching source image

  9 avril 2019, par Tabassum Latif

  I have to apply overlay on an image and I’m using Ffmpeg for this purpose. The output is generating fine but the issue that I’m facing is that if size of source image is less than overlay image (i.e. source is 500x500 and overlay is 500x1000 then source image streches to fill the whole area and output image is 500x1000. What I want is that it should not strecth the source image in the output after aplying overlay. But output should be of size as it is giving me now 500x1000. Following is my FFmpeg command : Any ideas would be appreciable. Thanks

  Required input

  

  ffmpeg commond :

  command = new String[]{"-y", "-i", filePath,
  
                  "-i", overlayPath, "-filter_complex",
  
                  "[1][0]scale2ref[i][m];[m][i]overlay[v]", "-map", "[v]",
  
                  "-map", "0:a?", "-ac", "2", output};

  Result output

  

• FFmpeg - add an image (cropped by mask) to the video

  10 mars 2021, par zeromodule

  I have 3 inputs :

  


  

  1. Video file

  


  2. Image file (GIF)

  


  3. Mask file (transparent PNG with some black pixels) - the same resolution as the video

  


  


  I want to put the image on the video, but throw out all image pixels that are transparent in the mask (replace them with transparent ones).

  


  
  

  

  


  


  My current command, without masking (it works fine) :

  


  ffmpeg -i input.mp4 -ignore_loop 0 -i image.gif -filter_complex "[1]scale=700x700[scaled_gif];[0][scaled_gif]overlay=50:30:shortest=1" -codec:a copy output.mp4


  


  I know I should probably use alphamerge, but I don't understand how to use it properly.