[X] Wrong kBit/s and length

[fuzi1968]

The latest 2.42 shows a wrong kBit/s & Frequency on some MP3's.

Tag & Rename 3.5 RC1 shows it correctly - also RealPlayer.

All files are 320 kBit/s (except the one with 384).

The frequency is always 44100 Hz - (except the one with 48000 Hz).

See Screen Shot:

Florian, if you need the wrong displayed MP3's - please contact me.

[fuzi1968]

Hi Florian,

I've just analyzed the one file of the screen shot where mp3tag 2.42 shows 32 kBit/s and 48.000 Hz - but other software shows 320 kBit/s and 44.100 Hz (and it sounds like that).

Here is the analyze of the 32-Bit-Header:

00000000h: EE 56 A0 00 B9 90 69 7D CA 54 00 26 DE 17 5A 19; îV .¹�i}ÊT.&Þ.Z.

32-Bits - which is

EE = 1110 1110
56 = 0101 0110
A0 = 1010 0000
00 = 0000 0000

and the header definition (the number of bits in paranthesis)

A     Syncword (12)
B     MPEG Version (1)
C     MPEG Layer (2)
D     Protection Bit (1)
E     Bitrate (4)
F     Sampling Frequency (2)
G     Padding (1)
H     Private (1)
I     Channel-Mode (2)
J     Mode-Extension (2)
K     Copyright (1)
L     Original (1)
M     Emphasis (2)

which are the bits:

A 111011100101
B 0
C 11
D 0
E 1010
F 00
G 0
H 0
I 00
J 00
K 0
L 0
M 00

and when I look on e.g.

http://swlab.et.fh-duesseldorf.de/pc_pool/...n/Kapitel32.htm

so
B is not set => MPEG 2
C is 11 => Layer III

mp3tag.de shows MPEG 1 / Layer I ...

E (Bitrate) = 1010 which is in the table under MPEG 2 / Layer III => 160 kBit/s, but mp3tag.de shows 32kBit/s.

F (Sampling Freq). = 00 = 22.050 Hz ... and not 48.000 Hz

Hmm .. all sounds very mysterious with this file .. RealPlayer shows 320 kBit/s, Tag & Rename shows 320 kBit/s & 44.100 Hz (Lame 3.82), Directory Opus plugin shows the same values as mp3tag - but it's definitely not 32kBit/s

Please let me know if you need the MP3 file - THX.

[Sebastian_Mares]

You didn't pick up the right sequence (frame header) since syncwords have the first 12 bits set, so it should be something like FF F? and definitely not EE ??.