Original File Length (OFL) for mp3, mp3Pro, aac...

Original File Length (OFL) for mp3, mp3Pro, aac..., Gapless playback becomes possible.

Ivan Dimkovic View Member Profile	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 This post has been edited by Ivan Dimkovic: Mar 24 2003, 19:26

Posts in this topic

Ivan Dimkovic Original File Length (OFL) for mp3, mp3Pro, aac... Mar 24 2003, 19:17

JohnV Hopefully LAME and Foobar2000, Nero AAC and FAAD w... Mar 24 2003, 19:38

Gabriel Are you telling us that they published a paper jus... Mar 24 2003, 21:36

Ivan Dimkovic QUOTE Are you telling us that they published a pap... Mar 24 2003, 22:09

Ivan Dimkovic QUOTE (JohnV @ Mar 24 2003 - 06:38 PM)Hopeful... Mar 24 2003, 22:13

mmortal03 QUOTE OFL will allow gapless playback with OFL com... Mar 25 2003, 09:19

Gabriel I do not have the paper yet. But it seems to me th... Mar 25 2003, 09:36

mmortal03 QUOTE *it should be possible most of the time to u... Mar 25 2003, 09:43

mmortal03 Does anyone know if progress is being made on OFL,... Jul 27 2003, 10:26

JohnV QUOTE (mmortal03 @ Jul 27 2003, 12:26 PM)Does... Jul 27 2003, 17:26

mmortal03 QUOTE (JohnV @ Jul 27 2003, 10:26 AM)Maybe so... Jul 28 2003, 03:56

mmortal03 Is this the method that was finally implemented in... Oct 9 2003, 15:52

menno QUOTE (mmortal03 @ Oct 9 2003, 03:52 PM)Is th... Oct 9 2003, 16:09

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