Posted by Mike G. on 09/02/07 13:44

On Sep 1, 6:36 pm, trp...@gmail.com wrote:
> Is it possible with php to have someone upload an .mp3 audio file,
> then using php let the user edit the .mp3 file to save just a part of
> the file. So for example someone uploads a 3 minute song, but wants to
> cut out the section from 1 minute 15 seconds to 1 minute 30 seconds
> and save it off as a separate .mp3 file. I know this can be done with
> many desktop applications, but am looking to see if this can be done
> with .php or possibly another programming language for the web.
>
> Thanks

You can build a custom Flash player which allows for a user to make a
selection on a timeline (Flash handles mp3's really well). From
there , you would need to pass the begining and ending selection
points to a PHP script which communicates with a command-line utility
(such as LAME) to manipulate the mp3.

Be aware:

1. mp3 files are compressed so re-compressing a compressed file will
sound like garbage. I suggest having LAME encode from a high-quality
source in order to minimize the distortion.

2. Using PHP to execute command-line utilities could be a serious
vulnerability. Think your application out thoroughly and seek out
adviced PHP developers to examine your code before it goes live.

Cheers,
Mike G.

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