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• How to Convert Video to MP4 using FFMPEG in PHP

  4 octobre 2020, par Ken

  I am trying to find *.mkv and to convert into *.mp4
right now I'm using the following codes to convert .mkv videos to .mp4

  


  <?php   
    $folder = '/path/to/video/folder';
    $filename = 'a.name.of.the.video.mkv';
    $newFilename = pathinfo($filename, PATHINFO_FILENAME).'.mp4';
    exec('/usr/bin/ffmpeg -i '.$folder.DIRECTORY_SEPARATOR.$filename.' -codec copy '.$folder.DIRECTORY_SEPARATOR.$newFilename.' 2>&1', $out, $error);

?>


  


  The above codes are working fine but I want to convert all videos ending with .mkv to .mp4 without manually setting their names.

  


  I want the PHP version of the following command using above working codes.

  


  for i in *.mkv; do
  ffmpeg -i "$i" -codec copy "${i%.*}.mp4"
done


  


  I have tried this so far but did not work

  


  exec('/usr/bin/ffmpeg for i in '.$folder.'*.mkv; do ffmpeg -i "$i" -codec copy "${i%.*}.mp4" done');


  


• FFMPEG -re Insurance

  17 octobre 2020, par Devin Dixon

  FFMPEG -re according to the ffmpeg docs :

  


  


  Read input at native frame rate. Mainly used to simulate a grab
device, or live input stream (e.g. when reading from a file). Should
not be used with actual grab devices or live input streams (where it
can cause packet loss).

  


  


  My ffmpeg stream command is :

  


  ffmpeg -re -i https://www.example.com/video.mp4 -filter_complex tpad=start_duration=10:stop_duration=15:start_mode=add:color=black:stop_mode=add -af adelay=10000|10000 -maxrate 2M -crf 24 -bufsize 6000k -c:v libx264 -preset superfast -tune zerolatency -strict -2 -c:a aac -ar 44100 -attempt_recovery 1 -max_recovery_attempts 5 -drop_pkts_on_overflow 1 -f flv rtmp://live.example.com/123453


  


  Except this does not always work, and sometimes I have livestreams ending early because ffmpeg is playing faster than the frame rate. Is there another command that can be used to ensure ffmpeg streams the video in real time ?

  


• split videos with ffmpeg

  23 novembre 2020, par 5Diraptor

  I'm trying to create a script that scans a directory, and for all videos larger then X size, splits them down into smaller chunks.

  


  There are two similar questions :

  


  

  • Using ffmpeg to split video files by size

  


  • Split into equal parts and convert many mp4 videos using ffmpeg

  


  


  Neither of these work in the way I want. The first you have to manually input every file that you want to process. The second doesn't check for filesize, or output the files in the way I want.

  


  So far, this is the contents of the .bat file :

  


  %~d1&#xA;&#xA;for %%a in (*.MOV) do (&#xA;&#xA;if %%~za GTR 2000000000 (&#xA;&#xA;REM usage %%a <filename>&#xA;set "_filename=%~n1"&#xA;set "_tally=.SPLIT-%03d"&#xA;set "_extension=%~x1"&#xA;&#xA;set "_outputname=%_filename%%_tally%%_extension%"&#xA;&#xA;&#xA;    ffmpeg -i "%%a" ^&#xA;        -crf 0 -c copy -map 0 -segment_time 00:00:30 -f segment -reset_timestamps 1 ^&#xA;        %_outputname%&#xA;)&#xA;)&#xA;pause&#xA;</filename>

  


  My aim is for the script to work in the following way :

  


  

  1. Drag a video (from a folder of videos) onto the .bat file.

  


  2. Script opens up, and targets each file ending .MOV, and is greater then 2GB

  


  3. ffmpeg splits the video down into >2GB chunks. (I know it's currently split down in 30 second chunks, still working on understanding how to use the -fs parameter).

  


  4. Each chunk gets saved with the original filename and extension, but the filename is suffixed with ".SPLIT" and then a unique number that relates to which file it is - first file is 000 and second is 001 etc.

  


  


  Problems :

  


  

  • Firstly, I want to split by filesize and not time, but I don't understand how to use the -fs parameter in this case. I guess I could use something like ffprobe -i input.file -show_format -v quiet | sed -n 's/duration=//p' in conjunction with it but I'm not confident...

  


  • Secondly, I'm getting a problem with %03d in the .bat. Think I'm mixing up languages ? It retrieves the filepath of the .bat file instead of counting number of loops.

  


  


  Any help really appreciated !