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• fate : Explicitly specify the rgb555le pixel format for the mss2 rgb555 tests

  10 janvier 2014, par Martin Storsjö

  fate : Explicitly specify the rgb555le pixel format for the mss2 rgb555 tests
  This fixes these fate tests on big endian.
  Signed-off-by : Martin Storsjö <martin@martin.st>
  

  • [DBH] tests/fate/microsoft.mak

• ffmpeg scale down video dynamically (squeeze-back) or zoompan out to smaller than original VER2

  19 juillet 2023, par loarrin

  I have 2 videos, I'm trying to overlay one on top of the other, and have it shrink down in an animated fashion until it appears like a picture-in-picture setup. Then, after a few seconds it should scale back up. Just like in this question. Here is the working code from there :

  


  ffmpeg -i bg.mov -i top.mov -filter_complex "[0:v]scale=1920x1080,setpts=PTS-STARTPTS[bg]; [1:v]setpts=PTS-STARTPTS+2/TB, scale=-1:'480+600*abs(sin((t-2)*2*PI/8))':eval=frame[top]; [bg][top]overlay" -vcodec libx264 out.mp4


  


  It works perfectly, but I have one difference I cannot achieve modifying existing code : scale filter in this example resizes the second video stream having attraction point in the top left corner of this stream. I mean, when the second stream is getting smaller, it is scaled to the top left corner. And if it is getting bigger, it again stretches from the top left corner. The top left corner of the stream being scaled is staying in one place constantly no matter what.

  


  Is it possible to make more symmetrical version of this scale code, so when the second stream is scaled it is scaled from and to the top center of it (So the top left corner would move right when the stream is getting smaller and move to the left then the stream is getting bigger) ?

  


  

  


• i want to add watermark to video with ffmpeg, i want watermark jump to all corners one by one every 5 seconds [duplicate]

  24 mai 2021, par block king

  I am using this code currently for adding watermark and username in the upper left corner I want watermark shifts automatically in the bottom right corner

  


  PHP code :

  


  $cmd = "ffmpeg -i $original_video_file_path -i $watermark -filter_complex \"[0:v][1:v]overlay=20:25, drawtext=fontfile='$font_path':text='@$username':fontcolor=#ffffff:fontsize=18:y=80:x=15\" -c:a copy -movflags +faststart $video_with_watermark";