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• what is the exact path to specify in php for ffmpeg for windows

  17 janvier 2014, par user3196597

  i'm new to ffmpeg..and i've been trying to figure out the exact path to specify while running it in a php exec() function the code below runs fine in terminal but not in php :

     1)c:/ffmpeg/bin/ffmpeg -y -i c:/xampp/htdocs/video/media/original.mp4 -f avi c:/xampp/htdocs/video/media/new.avi 2<&1
  
  
  
  
  
     2)c:/xampp/htdocs/video/ffmpeg/bin/ffmpeg.exe -y -i c:/xampp/htdocs/video/media/original.mp4 -f avi c:/xampp/htdocs/video/media/new.avi 2<&1

  that works fine in terminal but not in php, i think the problem is with the path specification..can anyone tell the exact path to use while working in windows,please ??

  thanks in advance friends :D

• Maintaining Video Quality and Size while processing with FFmpeg

  2 février 2017, par Syeda Zunairah

  I am using FFmpeg for video watermarking in android. Everything is working good but now I have to choose one from Video Quality and Video Size but I need to take care of both.

  Here is my code

   MediaMetadataRetriever mediaMetadataRetriever = new MediaMetadataRetriever();
  
   mediaMetadataRetriever.setDataSource(videoPathtem);
  
  String bitRate = mediaMetadataRetriever.extractMetadata(MediaMetadataRetriever.METADATA_KEY_BITRATE);
  
  String cmd = "-y -i " + videoPathtem + " -i " + watermarkImagePath + " -b:v " + bitRate + " -filter_complex overlay=0:0 -strict -2 -metadata:s:v:0 rotate=" + videoRotation + " -preset ultrafast " + resultVideoPath;

  Now if I don’t define the bitrate in the above command the Video Quality is maintaining but the bitrate is increasing with X5 (i.e. if original bitrate was 1000bps now its 5000kbps almost) resulting too much increase in video size (i.e from 50 MB to 150MB)

  But if I define the bitrate in the above command than the bitrate and video size is almost like the original which is perfect but the quality of the video is too low.

  Now is there any way I can maintain the quality as well as video size ?

  I have searched on SO and checked other answers but nothing seems to handle both.

  Thanks.

• Use FFMPEG to Merge many frames into one video ?

  14 novembre 2015, par SpoiledTechie.com

  With a project I am working on, I am taking one video, extracting frames from within the middle, from 00:55:00 to 00:57:25. After I extract these images, I am modifying them via code and I then need to compile these images back into a video. To finish it off, I will then merge the video back into the original video.

  Ive already pulled the frames from the video, modified them, but now I need to merge them back together into a video.

  I used this question to check the format, but I am not getting the correct output.

  http://superuser.com/questions/563570/use-ffmpeg-for-video-to-frames-then-frames-to-video-with-original-sound

  Here is my current input to FFMPEG :

  -r 24.97 -i "C:\Users\scott\AppData\Local\Temp\iOs91azj0.Bmp" -r 24.97 -i "C:\Users\scott\AppData\Local\Temp\iOs91azj1.Bmp" -r 24.97 -i "C:\Users\scott\AppData\Local\Temp\iOs91azj2.Bmp" -r 24.97 -i "C:\Users\scott\AppData\Local\Temp\iOs91azj3.Bmp" -r 24.97 -i "C:\Users\scott\AppData\Local\Temp\iOs91azj4.Bmp" -r 24.97 -i "C:\Users\scott\AppData\Local\Temp\iOs91azj5.Bmp" -r 24.97 -i "C:\Users\scott\AppData\Local\Temp\iOs91azj6.Bmp" -r 24.97 -i "C:\Users\scott\AppData\Local\Temp\iOs91azj7.Bmp" -r 24.97 -i "C:\Users\scott\AppData\Local\Temp\iOs91azj8.Bmp" -an -r 24.97 "C:\Users\scott\AppData\Local\Temp\ewELJdA8.mp4"

  EDIT

  My current output gives me a video that doesn’t play. So for some reason, the merging of frames isn’t the correct format and FFMPEG isn’t giving me a reasonal output to work with.

  How do I merge frames together into a video ?