[Mp4-tech] Reducing Output Buffer size

[Biswajit Biswas]

If the encoder has used short windows with interleaving, there is no way you
can reduce the output buffer size. In that case entire frame has to be
decoded at a time. Evenif we assume If encoder uses only long window and
sectioning is done for each scale factor band, even then all the MDCT
coefficients are needed to reconstruct the PCM signal. If your buffer
requirement is so low, yow can look at Low Delay AAC, which has half the
buffer requirement of AAC-LC.
  -----Original Message-----
  From: mp4-tech-bounces lists.mpegif.org
[mailto:mp4-tech-bounces lists.mpegif.org]On Behalf Of Vinayaka
  Sent: Monday, August 04, 2023 2:41 PM
  To: mp4-tech lists.mpegif.org
  Subject: [Mp4-tech] Reducing Output Buffer size
  Hello,
  I am developing MP4 AAC decoder and I understood that decoder gives 1024
samples per channel as the output. This is normal way of getting the output
by calling the decoder per frame. My requirement is slightly diffrent:
  Problem:
  I want the output buffer size, 4 to 8 times less than the conventional one
(1024Samples/channel). To achieve this, I can call the Decoder more than
once per frame. I want to know the folowing before doing this:
  What are the precautions we have to take?
  How it affects the Decdoer in terms of Memory & Performance?
  Is there any better way to reduce the output buffer size?
  Please help me in this regard.
  Vinayaka
  **************************************************************
  Scanned by MailScan Anti-Virus and Content Security Software.
  Visit http://www.mwti.net for more info on eScan and MailScan.
  **************************************************************
-------------- next part --------------
An HTML attachment was scrubbed...
URL: /pipermail/mp4-tech/attachments/20030804/82673f8b/attachment.html