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• Cutting of an video by timestamps from a subtitle ?

  7 janvier 2018, par zick

  I have a subtitle script , I copied the timestamps from that subtitle into text file.From those timestamps I want to modify the original video , cutting of pieces from that original video.I’m not interested on the parts that I’m cutting of , I only care of the remains.I’m seeking the pauses between the subtitle.

  Here are the first 20 timestamps.I’m interested in the pauses between the lines , 1 and 2 , 2 and 3 , 3 and 4 and so on.
  ffmpeg commands to cut or copy is only outputing the result of those timestamps but is not changing the original video.That is what I want to edit that video by deliting the parts between those timestamps.Is it possible ?

  1.00:00:45,366 —> 00:00:47,499

  2.00:00:47,500 —> 00:00:51,165

  3.00:00:51,166 —> 00:00:56,132

  4.00:01:47,000 —> 00:01:49,265

  5.00:01:49,266 —> 00:01:51,365

  6.00:02:06,366 —> 00:02:11,665

  7.00:02:11,666 —> 00:02:13,799

  8.00:02:16,766 —> 00:02:20,999

  9.00:02:21,000 —> 00:02:24,732

  10.00:02:24,733 —> 00:02:26,999

  11.00:02:27,000 —> 00:02:30,932

  12.00:02:30,933 —> 00:02:33,465

  13.00:02:33,466 —> 00:02:36,465

  14.00:02:36,466 —> 00:02:37,732

  15.00:02:37,733 —> 00:02:40,299

  16.00:02:40,300 —> 00:02:42,265

  17.00:02:45,300 —> 00:02:48,265

  18.00:02:48,266 —> 00:02:50,532

  19.00:02:50,533 —> 00:02:55,365

  20.00:02:55,366 —> 00:03:02,132

• PHP ffmpeg output location

  18 janvier 2016, par Mick Jack

  My website allow users to upload video files to the server. Original file will be move to folder "Original" ffmpeg will compress the video and store the video in 480p folder. how to i setup ffmpeg so that it will store output of the compressed video file into original/480p ?

  Partial code of upload.php

  $target_dir = "Original/"; //where you want to upload the files to
  
  $target_file = $target_dir.basename($_FILES['file']['name']);
  
  $fileType = pathinfo($target_file, PATHINFO_EXTENSION);
  
  $newFileName = $target_dir.sha1(pathinfo(basename($_FILES['file']['name']), PATHINFO_FILENAME)).'480p'.'.'.$fileType;
  
  //$newFileName = $target_dir.sha1(pathinfo(basename($_FILES['file']['name']), PATHINFO_FILENAME)).'-'.time().'.'.$fileType;
  
  move_uploaded_file($_FILES['file']['tmp_name'], $newFileName);

  using this FFMPEG command

  shell_exec("C:\\ffmpeg\\bin\\ffmpeg.exe -y -i ".$newFileName." -c:v libx264 -s:v 854x480 -c:a copy \"480p\\{$newFileName}\" > logfile.txt 2>&1");

  i get the error
  480p\Original/ffbaf58f1231628f9ac2a583f038b51719006ec6480p.mp4 : No such file or directory

  i will like the output to be stored in original/480p/compressed-video-file

• Preserving video details for ssim in ffmpeg windows [closed]

  4 juillet 2024, par Dharik Arsath

  How to record screen in ffmpeg so to compare with original and recorded video with ssim. this looks a simple tasks but when recording ffmpeg is dropping and duplicating frames and so it does not match frame to frame on original video. though duplicate is around 100 and drop is around 0 to 30, I see sometimes ssim gives high score but another time it does not. when i checked there was a delay of few milliseconds which can be hardly seen on naked eye.

  


  Note : In ubuntu with nvidia it works fine, problem is on windows only (intel gpu)

  


  command I am using is same for ubuntu and windows only gdigrab and x11grab changed. and preserving most information like recording at same fps of original video, using same pixfmt yuv420