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• Getting the picture Orientation from a ffmpeg frame slice (for background poster image)

  11 février 2018, par wuzz

  Been at this for hours now, can’t seem to find a way to get the orientation. No matter what I do the image frame slice is sideways. Idea’s Interweb friends ? Also, I am doing this with MP4 and I already know the next issue I am going to run into is doing this with MOV files, from iOS uploads. Any help there, would be appreciated as well thanks.

  $command_to_execute = "ffmpeg -vframes 1 -ss 1/2 -i " . $video_path . " " . 
  
  $video_image_dir . $video_name . ".jpg -y";
  
  exec($command_to_execute);
  
  $exif = exif_read_data($video_image_dir . $video_name . ".jpg");
  
  $imageResource = imagecreatefromjpeg($video_image_dir . $video_name.".jpg");
  
    switch ($exif['Orientation']) {
  
      case 3:
  
              $image = imagerotate($imageResource, 180, 0);
  
      break;
  
      case 6:
  
              $image = imagerotate($imageResource, -90, 0);
  
      break;
  
      case 8:
  
              $image = imagerotate($imageResource, 90, 0);
  
      break;
  
      default:
  
              $image = $imageResource;
  
      }
  
      imagejpeg($image, "upload/" . $video_name . ".jpg", 90);

• Assistance required with filter graph construction(fast motion between times)

  6 janvier 2023, par D-MAN

  I am trying to re-create the following video, using ffmpeg.
https://youtu.be/eVQ9ysp0Pj0. "please check 0.19 minute for examples"
I have the following line of code which has most of the elements, except the part where is applies fast motion for 1s at certain outputs([vfr1][vfr2][vfr3])/times. currently it is only setpts=0.5*PTS[vboom] for the entire length of the video.

  


  exe = "-i " + file + " -i " + frame + " -i " + framestart + " -i " + frameEnd + " -i " + audioOverlay + " -filter_complex \"[0:v]pad="+mVideoWidth+":"+mVideoHeight+":576:0[vpad]; [vpad][1]overlay[vframed]; [vframed]split=3[vfr1][vfr2][vfr3]; [vfr1]reverse[vrev]; [vfr2][vrev][vfr3]concat=n=3,setpts=0.5*PTS[vboom]; [vboom][2]overlay=enable='lte(t,2)'[vpreout]; [vpreout][3]overlay=enable='gte(t,"+msec+"*3*0.5-2)' \" -map 4:a -b:v 8000k -shortest -preset ultrafast -crf 23 " + file2.getAbsolutePath();

  


  i have tried the following code snippets in various sections of the filter graph, with no luck !

  


  //[0:v]trim=0:2,setpts=PTS-STARTPTS[v1] ;[0:v]trim=2:5,setpts=2*(PTS-STARTPTS)[v2] ;[0:v]trim=5,setpts=PTS-STARTPTS[v3] ;
//[0:v]trim=0:10,setpts=PTS-STARTPTS[vfr1] ;[0:v]trim=10:30,setpts=PTS-STARTPTS[vfr2] ;[0:v]trim=start=30,setpts=PTS-STARTPTS[vfr3] ;
//[0:v]trim=2:3,setpts=0.75*(PTS-STARTPTS) ; [0:v]trim=4:5,setpts=0.75*(PTS-STARTPTS) ; [0:v]trim=7:8,setpts=0.75*(PTS-STARTPTS) ;
//[0:v]select='between(t,1,4)+between(t,4,6)',setpts=0.87*PTS ;

  


• FFMpeg Logo Different Sepration [closed]

  9 mai 2024, par unkp

  Simple :

  


  1.Want a logo to be only for specific times on a video,

  


  motivation : reduce length of the process if possible.

  


  the code used for logo is this one :

  


  ffmpeg -i output0.mp4 -vf "movie=logo.png [watermark] ; [watermark]scale=220x220 [watermark2] ;[in][watermark2] overlay=main_w-overlay_w-10:main_h-overlay_h-10 [out]" output0logo0done.mp4

  


  ---

  


  Would Want like something like this if possible : keep the logo for 1 minute then 4 minutes later keep the logo again for 1 minute.

  


  ---

  


  Tried searching about this request, the answers found were related to ->

  


  split the parts like 1,2,3,4,5 only add the logo to odd parts ->

  


  combine them after, this may be too troublesome