IPB

Welcome Guest ( Log In | Register )

Original File Length (OFL) for mp3, mp3Pro, aac..., Gapless playback becomes possible.
Ivan Dimkovic
post Mar 24 2003, 19:17
Post #1


Nero MPEG4 developer


Group: Developer
Posts: 1466
Joined: 22-September 01
Member No.: 8



On AES 114th held in Amsterdam, Thomson Multimedia researchers presented a way to signal exact codec delay and file length in a backwards compatible fashion - in current mp3, mp3pro, aac, etc... coding algorithms. It is known as OFL - or Original File Length

Algorithm deals with non-exact file length and delays introduced by modern frequency-domain coding systems. Data for OFL is written in ancilliary data so it is completely backwards compatible - decoder without OFL will just ignore the OFL data.

OFL will allow gapless playback with OFL compatible decoders.

AES paper number is: 5830


PS: They are mentioning LAME in the paper smile.gif

This post has been edited by Ivan Dimkovic: Mar 24 2003, 19:26
Go to the top of the page
+Quote Post
 
Start new topic
Replies
mmortal03
post Oct 9 2003, 15:52
Post #2





Group: Members
Posts: 601
Joined: 19-July 02
From: USA
Member No.: 2667



Is this the method that was finally implemented into Nero?


--------------------
WARNING: Changing of advanced parameters might degrade sound quality. Modify them only if you are expirienced in audio compression!
Go to the top of the page
+Quote Post

Posts in this topic


Reply to this topicStart new topic
1 User(s) are reading this topic (1 Guests and 0 Anonymous Users)
0 Members:

 



RSS Lo-Fi Version Time is now: 1st October 2014 - 09:18