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• FFMPEG : MP4 videos are not palying properly in iPhone, iPod, iPad

  25 mai 2012, par Shakti Singh

  I am converting videos from m4v, flv to MP4 for iPhone, iPod, iPad.

  I am using the below command to convert these videos

  ffmpeg -y -i video_1336500693.m4v -vcodec libx264 -vpre slow -vpre
  ipod640 -b 250k -bt 50k -acodec libfaac -ab 56k -ac 2 -s 480x320
  video_1336500693.mp4

  The video part of this mp4 file is working fine but the audio is not working properly. I am using HTML5 for this.

  The audio works for first 8-10 seconds but after that audio does not work and the strange thing is if I jump to forward or backward the audio works.

  Can anyone suggest what's going wrong ?

  Thanks

• 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)

• 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 ?