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Informed rebuttal of VBR disadvantages appreciated, VBR always rocks, when it comes to lossy compression, right?
Moon
post Oct 16 2008, 09:54
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As already mentinend in this thread some fanboy over at the offical Pioneer forums is making claims that VBR sucks (here and here) in that it needs more processing power compared to CBR and for various other reasons.

I would like to have a well written rebuttal of that statment based on facts so Pioneer might reconsider putting VBR support into their upcoming DJ equipment. I've ripped all my 1000+ CDs to VBR and I wouldn't want to reencode them just because Pioneer doesn't get it right. Thanks!
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DJRyanJ
post Oct 16 2008, 22:00
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OK, I have a brief moment here before my midterm so I'm going to try to reply to some of what you have said.

QUOTE
Is it that hard nowadays to properly support the standard?


I'd say no. The problem that many users come across is that the MP3's that they're using ARE NOT encoded to standard, and/or are broken in some way, and Pioneer's support for broken MP3's is questionable at best. It's absolutely unbelievable how many BAD/CORRUPT MP3's are out there that will still play in even a half-decent player/software, giving no indication that it's broken.

That said, I agree - the support should be improved to account for those corrupt MP3's that play just fine on most players/software. On the same note, Steinberg should also step up - I use Wavelab 5.0 and I can tell you for free that there are plenty of MP3's out there it can't seem to decode. But the second I throw them into Winamp (free, as we all know), presto-chango, Winamp can read it. Why can't an EXPENSIVE program like Wavelab? Weird.

The reason I try to steer the Pio forum members away from VBR is just because of the fact that many of them use filesharing for their music sources, and many of them would never bother to check if the thing is broken before trying to use it (either because they don't have the technical knowledge, don't care, or aren't aware that it's possible), which could result in a show stopper for them. As a work-around to Pio's shoddy VBR support, I just say "don't use it". I agree that my explanations up to now have been misleading; I'll stop doing that now that I know better.

QUOTE
... don't ... let them even know that most modern audio and video formats use VBR by default for quality reasons.


Which ones? I'm curious...

QUOTE
If "your JOB (is) to care" use FLAC.


I would, if the program I use to playback on supported it (Serato Scratch Live). Unfortunately for me, it doesn't. So I "accept" MP3's.

QUOTE
Did you ever do a double blind test? As much as I tried, i could not tel VBR (~128kbps) from the original on the last listening test.


Not on VBR. But I have on other things. I'd be happy to try, just point me in the direction.

QUOTE
...wrote a lot of fancy stuff about VBR's speed penalty which is really nonsense. And with respect to quality you put the blame on VBR for no really existing reason.


Point conceded, but I'll be looking into this a bit more when I can to see what's actually going on (if possible).

QUOTE
The fact that perfection can't be achieved with mp3 is the reason why most members here prefer an encoder setting which produces smaller files than when using CBR 320.


This is a good point, and something I hadn't considered before.

Thanks for everything so far. I'll keep watching this, but I have a midterm and a busy night ahead of me. I'll post when I can.

-r-

This post has been edited by DJRyanJ: Oct 16 2008, 22:23
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Posts in this topic
- Moon   Informed rebuttal of VBR disadvantages appreciated   Oct 16 2008, 09:54
- - Raiden   Don't waste your energy. Self-absorbed people ...   Oct 16 2008, 10:51
- - halb27   It's all up to whether an encoder works well. ...   Oct 16 2008, 11:27
- - JensRex   Yes, don't waste your time. That guy is comple...   Oct 16 2008, 11:43
- - Slipstreem   As the other guys have already said, you're wa...   Oct 16 2008, 12:56
|- - add   QUOTE (Slipstreem @ Oct 16 2008, 13:56) C...   Oct 16 2008, 16:40
|- - Lyx   QUOTE (add @ Oct 16 2008, 17:40) QUOTE (S...   Oct 16 2008, 17:19
- - probedb   No point with some of these people....I've giv...   Oct 16 2008, 12:59
- - Canar   These threads are really old. I created an account...   Oct 16 2008, 16:59
|- - Synthetic Soul   QUOTE (Canar @ Oct 16 2008, 16:59) I resp...   Oct 16 2008, 17:08
- - Canar   No, I think I'm going mad. That post I made is...   Oct 16 2008, 18:10
|- - uart   QUOTE (Canar @ Oct 16 2008, 09:10) No, I ...   Oct 16 2008, 20:01
- - Slipstreem   Well, we have an answer of sorts over there from a...   Oct 16 2008, 18:18
- - Soap   Mind, if you do decide to argue: The argument that...   Oct 16 2008, 18:59
- - Slipstreem   I'm specifically not joining that forum as I...   Oct 16 2008, 19:39
- - Canar   Who is BDX?   Oct 16 2008, 20:03
|- - DJRyanJ   Alright guys, I'm the guy who did the wall of ...   Oct 16 2008, 20:49
|- - halb27   QUOTE (DJRyanJ @ Oct 16 2008, 21:49) ...S...   Oct 16 2008, 21:29
|- - kwanbis   QUOTE (DJRyanJ @ Oct 16 2008, 19:49) 5) W...   Oct 16 2008, 21:36
- - uart   I dont know, it's not me. Does anyone have a t...   Oct 16 2008, 20:06
- - Slipstreem   It wasn't me either, and I don't have a tr...   Oct 16 2008, 20:12
- - kornchild2002   I will post just to be ballsy. I don't see Pu...   Oct 16 2008, 20:48
- - Canar   I don't have the time right now to get more in...   Oct 16 2008, 21:13
- - m0rbidini   Pioneer should support VBR and stfu. If using VBR ...   Oct 16 2008, 21:57
- - DJRyanJ   OK, I have a brief moment here before my midterm s...   Oct 16 2008, 22:00
|- - Ron Jones   QUOTE (DJRyanJ @ Oct 16 2008, 14:00) Why ...   Oct 16 2008, 22:59
|- - m0rbidini   QUOTE (DJRyanJ @ Oct 16 2008, 22:00) QUOT...   Oct 16 2008, 23:32
|- - kwanbis   QUOTE (DJRyanJ @ Oct 16 2008, 21:00) I...   Oct 17 2008, 03:09
- - [JAZ]   I guess most it said already but I'd like to c...   Oct 16 2008, 23:01
- - Axon   What MP3 decoding library does Wavelab use? It...   Oct 16 2008, 23:02
- - DJRyanJ   QUOTE About 0.01% had issues. Most where CBRs. Di...   Oct 17 2008, 04:39
|- - kwanbis   QUOTE (DJRyanJ @ Oct 17 2008, 03:39) Did ...   Oct 17 2008, 05:06
- - xmixahlx   1. regarding the difficulty of decoding VBR it...   Oct 17 2008, 05:52
- - m0rbidini   QUOTE I've seen this in my very limited video ...   Oct 17 2008, 11:00
- - Lyx   Why have a long discussion when it all can be summ...   Oct 17 2008, 13:21
|- - halb27   QUOTE (Lyx @ Oct 17 2008, 14:21) Why have...   Oct 17 2008, 14:33
|- - lvqcl   QUOTE (halb27 @ Oct 17 2008, 17:33) QUOTE...   Oct 17 2008, 14:49
|- - Lyx   QUOTE But maximum bitrate for LAME VBR (i.e. lame ...   Oct 17 2008, 15:13
- - pdq   I am guessing (and I don't really know anythin...   Oct 17 2008, 13:50
- - Slipstreem   Won't the part of the audio stream being worke...   Oct 17 2008, 13:57
|- - pdq   QUOTE (Slipstreem @ Oct 17 2008, 08:57) W...   Oct 17 2008, 14:48
- - Synthetic Soul   DJRyanJ, kudos for making the effort to partake in...   Oct 17 2008, 14:04
- - Slipstreem   I'm gonna have to go and read more about how t...   Oct 17 2008, 15:01
- - Slipstreem   The only problem I can see with that is that some ...   Oct 17 2008, 15:43
|- - Lyx   QUOTE (Slipstreem @ Oct 17 2008, 16:43) T...   Oct 17 2008, 15:56
- - halb27   IMO the old --preset scheme or a similar one addre...   Oct 17 2008, 15:59
- - greynol   Now we're just going around in circles. There...   Oct 17 2008, 16:05
|- - Lyx   QUOTE (greynol @ Oct 17 2008, 17:05) Now ...   Oct 17 2008, 16:21
- - Synthetic Soul   We're also going way off-topic...   Oct 17 2008, 16:53
- - Slipstreem   A quick heads-up (not that I've been spying). ...   Oct 17 2008, 19:25
- - DJRyanJ   I actually know Pulse personally and he's not ...   Oct 17 2008, 20:59
|- - kornchild2002   QUOTE (DJRyanJ @ Oct 17 2008, 13:59) I...   Oct 17 2008, 21:21
|- - Canar   QUOTE (kornchild2002 @ Oct 17 2008, 13:21...   Oct 17 2008, 21:48
||- - kornchild2002   QUOTE (DJRyanJ @ Oct 17 2008, 14:40) Gene...   Oct 17 2008, 22:27
|- - kwanbis   QUOTE (kornchild2002 @ Oct 17 2008, 20:21...   Oct 19 2008, 19:25
- - Neasden   On the switch subject, I just would like to add th...   Oct 17 2008, 21:34
- - DJRyanJ   QUOTE (kornchild2002 @ Oct 17 2008, 13:21...   Oct 17 2008, 21:40
|- - Slipstreem   QUOTE (DJRyanJ @ Oct 17 2008, 21:40) What...   Oct 17 2008, 21:59
- - DJRyanJ   QUOTE (Slipstreem @ Oct 17 2008, 13:59) O...   Oct 18 2008, 01:11
|- - Synthetic Soul   QUOTE (DJRyanJ @ Oct 18 2008, 01:11) I...   Oct 18 2008, 10:00
- - Moon   Well, I'm sorry but after finding out about Pi...   Oct 18 2008, 11:11
|- - Synthetic Soul   QUOTE (Moon @ Oct 18 2008, 11:11) Well, I...   Oct 18 2008, 19:04
- - Slipstreem   With reference to your last paragraph, have you tr...   Oct 18 2008, 13:04
- - Moon   I'm gonna try em tonight. I've also conver...   Oct 18 2008, 16:36
- - pdq   If even a single frame uses 320 kbps then the enti...   Oct 18 2008, 22:16
- - Moon   QUOTE (Synthetic Soul @ Oct 18 2008, 20:0...   Oct 19 2008, 09:24
- - DJRyanJ   QUOTE (Moon @ Oct 18 2008, 03:11) a) a fu...   Oct 19 2008, 10:33
|- - Synthetic Soul   QUOTE (DJRyanJ @ Oct 19 2008, 10:33) I su...   Oct 19 2008, 11:54
|- - Moon   QUOTE (DJRyanJ @ Oct 19 2008, 11:33) QUOT...   Oct 20 2008, 09:50
- - shadowking   Dj's of the world please stop bothering us wit...   Oct 20 2008, 12:50
- - DJRyanJ   I'm trying to do some comparisons, and I'm...   Oct 21 2008, 19:58
|- - Canar   http://ff123.net/samples.html is a good place to s...   Oct 21 2008, 20:16
- - halb27   On problemSamples folder you'll find those sam...   Oct 21 2008, 20:25
- - DJRyanJ   QUOTE (Canar @ Oct 21 2008, 13:16) Howeve...   Oct 21 2008, 20:58
|- - halb27   QUOTE (DJRyanJ @ Oct 21 2008, 21:58) .. f...   Oct 21 2008, 22:06
|- - Moon   QUOTE (DJRyanJ @ Oct 21 2008, 21:58) I...   Oct 21 2008, 22:28
|- - Slipstreem   QUOTE (DJRyanJ @ Oct 21 2008, 20:58) I...   Oct 22 2008, 00:52
- - lvqcl   QUOTE It refers to the LAME problem samples page f...   Oct 21 2008, 21:09
|- - Canar   QUOTE (lvqcl @ Oct 21 2008, 13:09) http:/...   Oct 21 2008, 21:26
- - DJRyanJ   That's the plan, slipstreem. Moon, I'll s...   Oct 22 2008, 04:31


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