mp3 size formula

[wheelbit]

Hi,
could anyone post the formula for computing the size of an mp3 (including overhead)?

Thanks.

[bond]

bitrate/sec*time(in sec)=filesize ;)

[tebasuna51]

bitrate in Kbits/sec
time in sec
filesize in KBytes

filesize = bitrate*time/8

[wheelbit]

Those formulas are not even close to the actual file size.

[tebasuna51]

A mp3 can have ID3v2 Tag with any size. Delete the tags and see the new filesize.

Or you have a corrupt mp3.

[CWR03]

A constant bitrate MP3 at 128 kb/s is almost exactly 1 MB/minute. Hopefully you can do the inverse math from that if your file differs in bitrate.

[stephanV]

Hi,
could anyone post the formula for computing the size of an mp3 (including overhead)?

Overhead of what?

[bitrate in kbps]*[length in sec]*(1.024/8) = [size in kilobyte]

This is the filesize without tagging or private headers.

[bond]

maybe he mixes up mp3 with mp4 :rolleyes:

[raquete]

in doubt i ask to experts: the formula work for VBR?

[Daijoubu]

You're guys are really confused eh...

Bitrate (kpbs) / 8 * lenght (secs)
(Which means 128kbps = 16KB/s)

That's it...

And yes it applies to VBR...if your player show the average bitrate ;)