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• Merging four videos with differnt resolution in a Grid with ffmpeg

  5 juillet 2015, par Taufiq

  I want to marge four videos in to one as show below. I have achieve the correct output given all the videos have the same resolution. But I get an undesirable result with different resolution. See below for more details.

  ffmpeg code to get to merge 4 videos of different resution in a grid format

  ffmpeg.exe -i "1.avi" -vf "[in] scale=iw:ih, pad=2*iw:ih [left];movie=2.avi, scale=iw:ih [right]; [left][right] overlay=main_w/2:0 [out]" -b:v 768k "Output1.mp4"
  
  ffmpeg.exe -i "3.avi" -vf "[in] scale=iw:ih, pad=2*iw:ih [left];movie=4.avi, scale=iw:ih [right]; [left][right] overlay=main_w/2:0 [out]" -b:v 768k "Output2.mp4"
  
  ffmpeg.exe -i "Output1.mp4" -vf "pad=iw:2*ih [top]; movie=Output2.mp4 [bottom]; [top][bottom] overlay=0:main_h/2" "Output_Stacked.mp4"

  Code above gives the follow output.

  

  But the problem arises when I rotate one of the videos and merge them.
  .

  Please tell me what I need to change to get the desired result. Thanks
  

• Cannot clip videos using FFMpeg in laravel

  22 novembre 2017, par Programmmereg

  I am building script where I can clip videos in laravel. Here’s my code :

  public function clip($id)
  
      {
  
          $video = Video::where('id', $id)->first();
  
  
  
          $vid = Storage::get('public/uploads/videos/' . $video->file_name);
  
  
  
          $ffmpeg = \FFMpeg\FFMpeg::create();
  
  
  
          $media = \FFMpeg::open($vid);
  
  
  
          dd($media);
  
  
  
          $video->filters()->clip(FFMpeg\Coordinate\TimeCode::fromSeconds(30), FFMpeg\Coordinate\TimeCode::fromSeconds(15));
  
  
  
      }

  And I have problem because there is error :

  FatalErrorException in ProcessUtils.php line 74:
  
  escapeshellarg(): Input string contains NULL bytes

  I think that is in line :

  $media = \FFMpeg::open($vid); 

  But I do not know what happened. Can you help me ?

• Bulk Edit Videos resolution/aspect problem

  1er mars 2020, par buffe buffera

  Lets say i have 100 videos, all different dimensions and formats
  I would like to know if there’s a way to bulk edit each video and set it to 16:9 1920x1080
  If is possible would like to add blurred sides effect

  for %%a in ("C :\Users\vmp\Desktop\Videos\100ClipsConcat*.mp4") do ffmpeg -i "%%a" -lavfi "scale=1080:640,boxblur=luma_radius=min(h\,w)/20:luma_power=1:chroma_radius=min(cw\,ch)/20:chroma_power=1[bg] ;[bg][0:v]overlay=(W-w)/2 :(H-h)/2,setsar=1" "C :\Users\vmp\Desktop\Videos\100ClipsConcat\Blurred\%% na.mp4"
  pause

  Ive tried this and it blur add video but resolution isnt good

  Ive also tried to do that :

  ffmpeg -i 2.mp4 -lavfi "scale=ih*16/9 :-1,boxblur=luma_radius=min(h\,w)/20:luma_power=1:chroma_radius=min(cw\,ch)/20:chroma_power=1[bg] ;[bg][0:v]overlay=(W-w)/2 :(H-h)/2,crop=h=iw*9/16,setsar=1" r3.mp4

  It blur every video perfectly but it also increase resolution a lot

  I would just like to find something that convert each video to 1920x1080 16:9 (if is possible with blur effect)