[Top][All Lists]
[Date Prev][Date Next][Thread Prev][Thread Next][Date Index][Thread Index]
Re: [libextractor] BUG wrong VBR bitrate
From: |
Christian Grothoff |
Subject: |
Re: [libextractor] BUG wrong VBR bitrate |
Date: |
Sun, 21 Nov 2010 21:58:47 +0100 |
User-agent: |
KMail/1.13.2 (Linux/2.6.32-25-generic; KDE/4.4.2; i686; ; ) |
Hi!
Sorry for the late reply. I've so far been unable to find a VBR mp3 to begin
with, which makes this problem harder for me to reproduce. Furthermore, there
is an inherent limitation in how LE calculates VBRs, which is that it takes a
(limited) number of samples, not the entire file, for the calculation. So if
you have a VBR mp3 that initially has roughly 128 kbps and later more, this
would still be the expected result (scanning the entire file is something I
would consider too expensive).
Now, the calculations done might be wrong, but they look fine -- and I'm not
an expert on mp3 to begin with. If someone could show me where
mp3_extractor.c is wrong here (ideally with a sample mp3), I'll of course be
happy to look into this some more or integrate a patch.
Happy hacking,
Christian
On Saturday, October 23, 2010 11:01:11 am pyro pingvin wrote:
> For some mp3 files I see a wrong VBR bitrate reported. Instead of e.g.
> ~253kbps, I see values like 128kbps (as if it's a CBR file)
[Prev in Thread] |
Current Thread |
[Next in Thread] |
- Re: [libextractor] BUG wrong VBR bitrate,
Christian Grothoff <=