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• Why the converted videos file size is greater than original file size ?

  6 décembre 2011, par svk

  I am using ffmpeg to convert the videos into mp4.Its working fine and its playing with high quality.No problem.But the worst case is I uploaded 14Mb file and after converting it goes to 30 Mb file.I am using the following the script to convert

  exec("ffmpeg -i videowithaudio.flv -vcodec libx264 -vpre hq -vpre ipod640 -b 250k -bt 50k -acodec libfaac -ab 56k -ac 2 -s 480x320 video_out_file.mp4 > output1.txt 2> apperror1.txt");   //webkit compatible

  I am using PHP for executing this command.Could you please help me how to reduce the file size from this 30Mb (nearly to uploaded file size is ok) with same quality.

• Generate special file list

  11 novembre 2020, par michel

  How can I get a list like this in bash :
I have to create a list like this and then concatenate the files for ffmpeg.

  


  ls -l stream
-rw-r - r-- 1 root root 0 Nov 9 20:30 Il.Gatto.Nero.2019.mp4
-rw-r - r-- 1 root root 0 Nov 9 20:30 My.Name.2019.mp4
-rw-r - r-- 1 root root 0 Nov 9 20:30 Terminator.2019.mp4
-rw-r - r-- 1 root root 0 Nov 9 20:30 spot-Il.Gatto.Nero.2019.mp4
-rw-r - r-- 1 root root 0 Nov 9 20:30 spot-My.Name.2019.mp4
-rw-r - r-- 1 root root 0 Nov 9 20:30 spot-Terminator.2019.mp4

i need to create a txt file like this:

file '/stream/spot-Il.Gatto.Nero.2019.mp4'
file '/stream/Il.Gatto.Nero.2019.mp4'
file '/stream/spot-Terminator.2019.mp4'
file '/stream/Terminator.2019.mp4'
file '/stream/spot-My.Name.2019.mp4'
file '/stream/My.Name.2019.mp4'
file ..........



ls -l | awk {'print "file \047/data/"$9 "\047" '} | awk NF
file '/data/'
file '/data/Il.Gatto.Nero.2019.mp4'
file '/data/Il.Mio.Nome.2019.mp4'
file '/data/Terminator.2019.mp4'
file '/data/spot-Il.Gatto.Nero.2019.mp4'
file '/data/spot-Il.Mio.Nome.2019.mp4'
file '/data/spot-Terminator.2019.mp4'


  


  Greetings Mich

  


  in php have write this :

  


  <?php
$db_host = 'localhost';
$db_name = 'genlist';
$db_user = '********';
$db_pass = '********';
$conn = mysqli_connect($db_host, $db_user, $db_pass);

if (!$conn) {
    die("Connection failed: " . mysqli_connect_error());
} else {
//echo "Connected successfully";
}
mysqli_select_db($conn,$db_name) or die ("Error select db: " . mysqli_error());

$sql = "SELECT * FROM tb_movie ORDER BY RAND()";
$query = mysqli_query($conn,$sql);

while($result = mysqli_fetch_assoc($query)) {

$data = "file '/data/EagleCinema/CinemaDramaNew/stream/" . $result['spot']  . "'"."\n";
$data .= "file '/data/EagleCinema/CinemaDramaNew/stream/" . $result['movie'] . "'"."\n";

file_put_contents('/var/www/html/random-cinema-drama.txt', $data, FILE_APPEND );

}


?>


  


  php result :

  


  file '/data/EagleCinema/CinemaDramaNew/stream/spot-Demolition.-.Amare.E.Vivere.2015.mp4'
file '/data/EagleCinema/CinemaDramaNew/stream/Demolition.-.Amare.E.Vivere.2015.mp4'
file '/data/EagleCinema/CinemaDramaNew/stream/spot-Una.Giusta.Causa.2018.mp4'
file '/data/EagleCinema/CinemaDramaNew/stream/Una.Giusta.Causa.2018.mp4'
file '/data/EagleCinema/CinemaDramaNew/stream/spot-Io.Prima.Di.Te.2016.mp4'
file '/data/EagleCinema/CinemaDramaNew/stream/Io.Prima.Di.Te.2016.mp4'
file '/data/EagleCinema/CinemaDramaNew/stream/spot-A.Beautiful.Day.2017.mp4'
file '/data/EagleCinema/CinemaDramaNew/stream/A.Beautiful.Day.2017.mp4'
file '/data/EagleCinema/CinemaDramaNew/stream/spot-Un.Improbabile.Amicizia.2019.mp4'
file '/data/EagleCinema/CinemaDramaNew/stream/Un.Improbabile.Amicizia.2019.mp4'
file '/data/EagleCinema/CinemaDramaNew/stream/spot-The.Intervention.2016.mp4'
file '/data/EagleCinema/CinemaDramaNew/stream/The.Intervention.2016.mp4'


  


  ...

  


  i need same result but with bash script no DB, only scan ffrom directory the file and generate the list.

  


• correct way to download a mp4 [Audio only] file as a mp3 file via php

  3 février 2018, par Kapil

  I am asking this question because i found it impossible as far my knowledge stands. However i believe here on stackoverflow a lot of genius persons visits so maybe someone can give a good advice / trick.

  My problem is, I am downloading a audio/mp4 file of youtube hosted on googlevideo.com’s server.

  My PHP code for this purpose :
  $mp3path is url of video

  header('Content-Description: File Transfer');
  
  if(strpos($mp3path, "https://") === false) {
  
      header('Content-length: ' . size($mp3path)); //size is custom function
  
  } 
  
      header("Content-Type: audio/MP4A-LATM, audio/MP4A, audio/m4a, audio/mp4, audio/mp4a, audio/mp4-audio, audio/mpeg"); 
  
      header('Content-Type: application/force-download');
  
      header("Accept-Ranges: bytes");
  
      header('Content-Transfer-Encoding: binary'); 
  
      header('Content-disposition: attachment; filename="'.$title.'.mp3"'); 
  
      header('Connection: Keep-Alive');
  
      header('Expires: 0');
  
      header('Cache-Control: must-revalidate, post-check=0, pre-check=0');
  
      header('Last-Modified: ' . gmdate('D, d M Y H:i:s', time()) . ' GMT');
  
      header("Cache-Control: private", false);
  
      header('Pragma: no-cache');
  
      readfile($mp3path);
  
      exit;

  I can download this audio file but few mp3 players are not able to play it when i did some research on by using mp3val [mp3val.sourceforge.net]. I found this file do not contain sample-rate, bit-rate or some other required codecs inside the file.
  Error received from mp3val : Unknown file format

  I know one possible way of doing this which is ffmpeg but i am looking for a less time consuming option of doing this because first ffmpeg download the whole file and then convert it to mp3 and save it on server. It takes a lot of time.

  I am looking for a easiest solution in which, i dont want to save the whole file on my server. I want to call this file from remote server and want to add sample rate, bit-rate in the file and then just somehow with php i want to start download on browser.

  All i mean to say i need a faster solution. I have seen 2 yt to mp3 converter, They are doing the same thing, giving instant download. i dont know how ?

  Please if you think its a stupid question or not possible then dont report to stackoverflow. I am trying to figure it out that’s why i am asking this question here. I hope you’ll understand my curiosity.

  Thanks,