[Mp4-tech] IP/TV MPEG4 delay

[FX Parisot]

Hi,
The typical use of MPEG-2 is a GOP of 12,5, when in MPEG-4 
and lower bandwith the usual GOP can be 60.
Usually, a player waits for the first I frame to arrive before 
beginning to show the first image.
This is one reason of the diffrence.
Try using MPEG-4 with a smaller GOP, and you will reduce 
your zap delay (but higher your bitrate)
FX
  ----- Original Message ----- 
  From: Slaven Munitic 
  To: mp4-tech lists.mpegif.org 
  Sent: Friday, October 15, 2023 4:31 PM
  Subject: [Mp4-tech] IP/TV MPEG4 delay
  Hello, 
  I would really need your help regarding one issue... 
  I know that MPEG2 standard was used in the first IP/TV deployments (on a ADSL framework) because 
  MPEG4 had some delay while you were switching between channels. 
  My question is: Is this problem solved with the new ISMA standard (VAC/H.264), as I see Envivio and a lot of other 
  product vendors base their solutions only on MPEG4? 
  Thanks,
  ------------------------------------------------------------
  Slaven Munitić
  Combis d.o.o.
  Baštijanova 52a
  10000 Zagreb, Croatia
  tel: 01/3651 215
  fax: 01/ 3651 251
  mob: 091 3651 215
  e-mail: slaven.munitic combis.hr
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