[Mp4-tech] minimum stream size

Ashish Malot malot emuzed.com
Tue Jul 20 11:43:34 EDT 2004


The number 768 comes from bit-rate requirements. For 48 KHz stereo signal
the max bit rate is 576 kbps, means 288 kbps for a channel.
(288000/48000)*1024 = 6144 bits or 6144/8 = 768 bytes.
bye,
Ashish Malot
“There is no royal road to anything. One thing at a time, all things in
succession. That which grows fast, withers as rapidly. That which grows
slowly, endures.”
--Josiah Gilbert Holland
  -----Original Message-----
  From: mp4-tech-bounces lists.mpegif.org
[mailto:mp4-tech-bounces lists.mpegif.org]On Behalf Of Shreya Pathak
  Sent: Monday, July 19, 2023 5:08 PM
  To: Mody,Mihir
  Cc: mp4-tech lists.mpegif.org; VHarisha soc-soft.com
  Subject: Re: RE: [Mp4-tech] minimum stream size
  Hi Mihir,
        Thanks for the reply. Actually I wanted to know why the minimum
buffer requirement for a given channel is 768 bytes ?
  Regards
  Shreya
  On Sat, 17 Jul 2023 Mody,Mihir wrote :
  >Hi Shreya,
  >
  >As per ISO/IEC 14496-3, section 4.5.3, the minimum buffer requirement for
given channel is 6144 bits (i.e. 768 bytes).
  >
  >Regards,
  >Mihir
  >
  >-----Original Message-----
  > From: mp4-tech-bounces lists.mpegif.org
[mailto:mp4-tech-bounces lists.mpegif.org]On Behalf Of Shreya Pathak
  >Sent: Thursday, July 15, 2023 6:22 PM
  >To: mp4-tech lists.mpegif.org
  >Cc: VHarisha soc-soft.com
  >Subject: [Mp4-tech] minimum stream size
  >
  >
  >
  >
  >Hi,
  >    In Mpeg4 AAC,Why the minimum stream size FAAD_MIN_STREAMSIZE is set
to 768 per channel ?
  >Regards
  >Shreya
  >
  >
  >
  >
  >
  >
  >
  >  <http://clients.rediff.com/signature/track_sig.asp>
  >
  >_______________________________________________
  >NOTE: Please use clear subject lines for your posts. Include [audio,
[video], [systems], [general] or another apppropriate identifier to indicate
the type of question you have.
  >
  >Note: Conduct on the mailing list is subject to the Antitrust guidelines
found at
http://www.mpegif.org/public/documents/vault/mp-out-30042-Antitrust.php
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /pipermail/mp4-tech/attachments/20040720/5b80dd07/attachment.html


More information about the Mp4-tech mailing list