mp3 frame length
framesize (fs) = 1152 Samples/Frame (Layer 2 and 3 only) bytefactor = 1152 Samples/Frame / 8bits = 144 FrameLength (fl) = bytefactor * (BitRate / SampleRate) + Padding fl = 144 * (128'000 / 44100 ) + Padding = 418 bytes
Framelength may vary within the same file due to different paddings or vbr encoding.
→ http://www.dv.co.yu/mpgscript/mpeghdr.htm
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