[SOLVED] Dynamic MP3 Compression Serverside?

[scooter41]

Hi There!

 

I have a client who is wishing to sell mp3 downloads on his website, currently selling 128k, but now wanting to do 384 as well for an additional cost.

 

I was trying to think of a good way to upload both, and thought perhaps use the same name but add 384 on the end of one of the file names and search for that on upload.

 

Then I thought, maybe there is some kind mp3 compression software that can be done dynamically using a php script? then they could only upload 1 file to sort out both formats ? is this possible?

 

Thanks for any help in advance.

 

Scott

[cooldude832]

not in php enviroment, you might have a c program to do this that could run from exec(), but I would think the added resource useage would far outweight the burden of storing 1 additional file type.

[zq29]

You could install LAME on the server, and re-encode with that...

 

<?php
$source = "path/to/320k/file.mp3";
$target = "path/to/128k/file.mp3";
`lame -b 128 $source  $target` //I think that's how you set the bitrate with LAME
?>

[scooter41]

perfect! I will try the LAME encoder and see how I get on with that

 

thanks for the support

[scooter41]

installed lame, and via SSH the following command works great, however in php no output file is created and no error is given either?

 

lame -b 128 /var/...path name... /httpdocs/test.mp3 /var/...path name... /httpdocs/test2.mp3

 

 

<?php

 

$source = "/var/...path name... /httpdocs/test.mp3";

$target = "/var/...path name... /httpdocs/test2.mp3";

 

 

$encode_cmd = "l";

echo exec( $encode_cmd );

?>

[zq29]

$encode_cmd = "l";

Your command isn't in there...

[scooter41]

must have been a copy/paste error, this is how it is:

 

 

<?php

 

$source = "/var/...path name... /httpdocs/test.mp3";

$target = "/var/...path name... /httpdocs/test2.mp3";

 

 

$encode_cmd = "lame -b 128 $source  $target ";

exec( $encode_cmd );

?>

 

[scooter41]

ok I have found a more functional syntax:

 

$encode_cmd = "lame -b 128 $source  $target ";

$output = exec($encode_cmd . ' 2>&1', $output, $return);

echo $output;

 

This it least gives me an output:

 

running: sh: lame: command not found

 

I guess I need to specify the full path to lame perhaps!

[scooter41]

all sorted!

 

had to install lame to a specific folder: in my case /usr/bin/lame/

 

Then called the full path to lame and it worked great!