IPB

Welcome Guest ( Log In | Register )

Suggest ~160kbps VBR setting.
guidryp
post Mar 30 2002, 19:27
Post #1





Group: Members
Posts: 30
Joined: 30-March 02
Member No.: 1649



Hi,

Looking at the suggested settings/presets I am dismayed at the lack of a VBR setting that operates at a lower bit-rate.

There is APS standard, which on my music easily averages over 200Kbps. In fact my latest Rush albums are averaging over 220Kbps.

I can see noisy metal taking over 220kbps, but a song like Rush-Nobody's Hero taking 230Kbps?

For me, it calls into question the validity of the VBR model if the answer to lower than 230KBps encoding is to use the ABR/CBR settings.

ABR doesn't seem much better than CBR after watching it encode 90+ % of its samples at the target rate.

Surely a VBR setting can be cooked up that can encode the above track at ~160kbps in VBR and still sound better than 160 ABR.

PS - I want to use this setting in my compact Flash based portable, in my car etc. My max space average is 160Kbps do to the size of the portable memory. But I want the best quality in that space.

Peter
Go to the top of the page
+Quote Post
 
Start new topic
Replies
pacohaas
post Apr 5 2002, 03:08
Post #2





Group: Members
Posts: 54
Joined: 26-December 01
Member No.: 759



QUOTE
Originally posted by JohnV
Again... -Y is not a lowpass. 
Just to put it simple (I've explained this so many times already during few days), using -Y can directly affect to the bit allocation of the whole frequency range of MP3. If it affects, the effect will be lower bitrate. -Y also can retain some high frequency content, so it's not a lowpass.
I understood that, I wasn't saying it was just a lowpass, I guess I was trying to point out that it might not be the optimal solution to lowering the bitrate because it only lowers bitrates based mainly on frequency data and not highly optimized and tweaked as --alt-preset standard is. So I agree with you, and here's some data to add:

[b]--alt-preset standard --lowpass 16

1. 173
2. 178
3. 175
4. 164
5. 168
6. 172
7. 171
Average: 171.8

======================================
As you can see, this data is very close to the --alt-preset standard -Y data, which backs up my original correlation between a lowpass and -Y (and again, yes I know that's not what -Y is)

QUOTE
Holy Smokes! 
You ripped 7 albums 5 times just to experiment? My Hats off to you.
thanks, when I do a test, I want to do it thoroughly. I picked some well mastered/produced CD's(because I knew they would be higher bitrate that my other CD's) and some good compilations(to test a range of recordings) to get a thorough test.
Go to the top of the page
+Quote Post

Posts in this topic
- guidryp   Suggest ~160kbps VBR setting.   Mar 30 2002, 19:27
- - SometimesWarrior   Take a look at this thread for some info on how to...   Mar 30 2002, 21:06
- - Negative Zero   You could also try the --r3mix switch, which resul...   Mar 30 2002, 21:51
- - JohnV   QUOTE Originally posted by Negative Zero You coul...   Mar 31 2002, 01:53
- - mithrandir   Why are there still so many --r3mix followers? It ...   Mar 31 2002, 02:57
- - guidryp   QUOTE Originally posted by mithrandir Although I...   Mar 31 2002, 05:59
- - mithrandir   I say alt-preset extreme -Y creates files with a r...   Mar 31 2002, 08:11
- - JohnV   QUOTE Originally posted by guidryp I am seeking a...   Mar 31 2002, 12:12
- - guidryp   QUOTE Originally posted by mithrandir If you nee...   Mar 31 2002, 18:16
- - guidryp   QUOTE Originally posted by JohnV Well, I don't kn...   Mar 31 2002, 18:55
- - mithrandir   QUOTE Originally posted by guidryp The problem I ...   Mar 31 2002, 21:02
- - JohnV   Yes, VBR would use more bits for harder sections, ...   Mar 31 2002, 21:05
- - guidryp   QUOTE Originally posted by mithrandir make two ...   Mar 31 2002, 22:03
- - guidryp   QUOTE Originally posted by JohnV Yes, VBR would u...   Mar 31 2002, 22:21
- - JohnV   QUOTE Originally posted by guidryp Rush == Metal?...   Mar 31 2002, 22:49
- - guidryp   Well after a bit of testing, I am going with: --a...   Apr 2 2002, 05:36
- - Dibrom   QUOTE Originally posted by guidryp Well after a b...   Apr 2 2002, 10:03
- - guidryp   For whatever reason, I remember --lowpass 16 using...   Apr 2 2002, 14:24
- - JohnV   QUOTE Originally posted by guidryp For whatever r...   Apr 2 2002, 14:35
- - guidryp   QUOTE Originally posted by JohnV Seems that you d...   Apr 2 2002, 15:02
- - indybrett   Thought I might try this for myself. Without goin...   Apr 2 2002, 15:34
- - JohnV   QUOTE Originally posted by guidryp I had read th...   Apr 2 2002, 16:48
- - fewtch   Just my opinion, but if you're gonna do an abrupt ...   Apr 2 2002, 17:05
- - guidryp   QUOTE Originally posted by fewtch Just my opinion...   Apr 2 2002, 17:19
- - scoper   Reading the suggestions of Dibrom and others regar...   Apr 2 2002, 17:25
- - guidryp   QUOTE Originally posted by JohnV Still I think ...   Apr 2 2002, 17:26
- - Dibrom   QUOTE Originally posted by scoper Reading the sug...   Apr 2 2002, 22:12
- - pacohaas   I ripped some complete albums and did some encodin...   Apr 3 2002, 04:25
- - guidryp   Holy Smokes! You ripped 7 albums 5 times just to ...   Apr 3 2002, 12:51
- - Amadeus93   QUOTE Originally posted by pacohaas 1. -b32 hardl...   Apr 3 2002, 13:43
- - JohnV   QUOTE Originally posted by pacohaas 2. While -Y d...   Apr 3 2002, 15:59
- - pacohaas   QUOTE Originally posted by JohnV Again... -Y is n...   Apr 5 2002, 03:08
- - pacohaas   which brings me to yet another idea that I've been...   Apr 5 2002, 03:13


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: 20th December 2014 - 13:03