IPB

Welcome Guest ( Log In | Register )

Do Not Use the Vorbis FFMPEG enecoder if you building WebM!, Monty mentions this in his blog post, but nobody is listening!
HotshotGG
post Jun 12 2010, 18:37
Post #1





Group: Members
Posts: 1593
Joined: 24-March 02
From: Revere, MA
Member No.: 1607



A lot of open-source enthusiasts and advocates are very excited about Google latest announcement of VP8 / Vorbis combo in a new container called WebM. The entire HTML 5 enthusiasts are so excited that they went a ahead a little to prematurely are building suboptimal builds! Michael Niedermeyer of FFMPEG projects acknowledges that the FFMPEG Vorbis encoder is buggy! Monty has a work around on his blog if you plan on building the WebM encoder under Linux. I am also providing an explanation in the wiki as to why it's generally a good idea to use the mainline libvorbis with libavcodec instead due to the fact that is has 5.1 channel coupling implemented correctly! Please spread the word as this will turn into a disaster sooner or later before it's patched. If you thought the HTML 5 wars are not bad enough now! laugh.gif

Monty's Blog:
http://xiphmont.livejournal.com/51160.html

This post has been edited by HotshotGG: Jun 12 2010, 18:43


--------------------
College student/IT Assistant
Go to the top of the page
+Quote Post
 
Start new topic
Replies
LordWarlock
post Jun 14 2010, 18:41
Post #2





Group: Members
Posts: 120
Joined: 21-August 05
Member No.: 24044



QUOTE (NullC @ Jun 14 2010, 18:48) *
It would be useful to have an independent (from the developers of libvorbis) validation of the perceptual performance... since the "well known suggestion to use libvorbis" is not that well known.

And Monty is... ???

QUOTE (xiphmont)
The FFmpeg internal encoder is just a very simple encoder that makes no attempt at high quality. It includes no psychoacoustic code and its only goal is to spit out a valid bitstream, not make it sound good.

Source: http://xiphmont.livejournal.com/51160.html...=145112#t145112
Go to the top of the page
+Quote Post

Posts in this topic
- HotshotGG   Do Not Use the Vorbis FFMPEG enecoder if you building WebM!   Jun 12 2010, 18:37
- - NullC   TOS #8!!!   Jun 14 2010, 01:13
|- - Zarggg   QUOTE (NullC @ Jun 13 2010, 20:13) TOS #8...   Jun 14 2010, 17:09
|- - NullC   QUOTE (Zarggg @ Jun 14 2010, 09:09) QUOTE...   Jun 14 2010, 17:48
|- - Zarggg   QUOTE (NullC @ Jun 14 2010, 12:48) It...   Jun 15 2010, 05:57
|- - NullC   QUOTE (Zarggg @ Jun 14 2010, 21:57) QUOTE...   Jun 19 2010, 00:39
|- - saratoga   QUOTE (NullC @ Jun 18 2010, 19:39) Many t...   Jun 19 2010, 01:14
|- - NullC   QUOTE (saratoga @ Jun 18 2010, 16:14) QUO...   Jun 19 2010, 03:06
- - Kohlrabi   I don't get the point of this post, ffmpeg-peo...   Jun 14 2010, 08:54
- - saratoga   I don't think you have to validate something t...   Jun 14 2010, 18:39
- - LordWarlock   QUOTE (NullC @ Jun 14 2010, 18:48) It wou...   Jun 14 2010, 18:41
|- - NullC   QUOTE (LordWarlock @ Jun 14 2010, 10:41) ...   Jun 14 2010, 19:21
|- - saratoga   QUOTE (NullC @ Jun 14 2010, 14:21) QUOTE ...   Jun 14 2010, 20:45
- - Canar   Canar reporting in with an ABX. A blind monkey cou...   Jun 14 2010, 20:16
- - lvqcl   What is worse: FFMPEG Vorbis, FFMPEG WMA or FFMPEG...   Jun 14 2010, 20:57
|- - Canar   QUOTE (lvqcl @ Jun 14 2010, 14:57) What i...   Jun 14 2010, 21:11
- - HotshotGG   QUOTE The problem is that people do not realize th...   Jun 15 2010, 05:52
- - dutch109   This problem has already been raised here when the...   Jun 15 2010, 14:23
- - Kohlrabi   You can generate your own citation: Go to #ffmpeg...   Jun 19 2010, 12:09
- - Oded Shimon   A bit late here, for what it's worth, here is ...   Jul 20 2010, 16:03


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: 19th September 2014 - 14:38