# Validate length of uploaded mp3?

**URL:** <https://www.ruby-forum.com/t/validate-length-of-uploaded-mp3/137487>\
**Category:** Rails\
**Created:** [May 13, 2008, 5:09pm UTC](https://www.ruby-forum.com/t/validate-length-of-uploaded-mp3/137487 "2008-05-13T17:09:23Z")\
**Posts on this page:** 2\
**Page:** 1

<div class="post-metadata">

**Author:** ![dino\_d](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/b5ac83/32.png) [@dino\_d](https://www.ruby-forum.com/u/dino_d)\
**Post date:** [May 13, 2008, 5:09pm UTC](https://www.ruby-forum.com/t/validate-length-of-uploaded-mp3/137487/1 "2008-05-13T17:09:23Z")

</div>

Hi -

I am uploading voice recordings and want to ensure they’re not longer  
than 30 seconds. Anyone have a good strategy?

Thanks,  
Dino

---

<div class="post-metadata">

**Author:** ![dino\_d](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/d/b5ac83/32.png) [@dino\_d](https://www.ruby-forum.com/u/dino_d)\
**Post date:** [May 21, 2008, 10:54pm UTC](https://www.ruby-forum.com/t/validate-length-of-uploaded-mp3/137487/2 "2008-05-21T22:54:03Z")

</div>

On 5/13/08, dino d. [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> I am uploading voice recordings and want to ensure they’re not longer  
> than 30 seconds. Anyone have a good strategy?

[http://ruby-mp3info.rubyforge.org/](http://ruby-mp3info.rubyforge.org/)

The MP3Info class has a length attribute.

–  
Greg D.  
[http://destiney.com/](http://destiney.com/)