Re: [MP3 ENCODER] File format of mp3

2002-07-30 Thread Takehiro TOMINAGA

 Why are there mp3 files in which the value of part2_3_length is zero?
 e.g. http://php.s3.to/bbs/up/img/216.png
 Isn't the part2_3_length length of main data per 1granule, 1channel?

Because the frame contains totally no sound (the frame is digital silence).



___
mp3encoder mailing list
[EMAIL PROTECTED]
http://minnie.tuhs.org/mailman/listinfo/mp3encoder



[MP3 ENCODER] File format of mp3

2002-07-29 Thread Miyoko Shioda


Hello,

I am making some mp3 analyzing tool.
I am not certain that the following is correct mp3 format, so
would you advise me wheather it is correct?


(ID3v2)
frame stream
---
frame side information4byte
(CRC)
{main_data_begin,private_bits,scfsi_data} 16bit(stereo) or 18bit(mono)
granule side information  59bit * 4(2ch,2gr)
main data 
---
(ID3v1)


and about the size of main data...

Why are there mp3 files in which the value of part2_3_length is zero?
e.g. http://php.s3.to/bbs/up/img/216.png
Isn't the part2_3_length length of main data per 1granule, 1channel?


with regards,

-- 
Miyoko Shioda [EMAIL PROTECTED]


___
mp3encoder mailing list
[EMAIL PROTECTED]
http://minnie.tuhs.org/mailman/listinfo/mp3encoder