Thompson ViBE EM4000, User Manual

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Appendix A ’Technical Specifications’ — Features
174 ViBE EM4000 — Release 1.10
User Manual — 46073586AB02
GOP
„
M <N <64
„
Possibility of full adaptive, restricted or fixed GOP:
™
Full adaptive GOP mode (variable M and N)
This mode allows P picture period and effective
GOP size to vary according to video content (i.e.
spatio-temporal complexity and events such as
scene changes or fades). In this case, the effective
GOP size varies from M up to N + 8 max. (encoding
order), where M and N are user-set.
™
Restricted GOP mode
This mode is a limitation of the full adaptive mode
where the effective GOP size varies from M up to
N+1. This restriction can lead to lower video
quality around scene changes.
™
Fixed GOP mode
For this mode, both P picture period and GOP size
are set to the value set by the user.
„
Seamless M and N change during configuration by
the User
Note: The GOP size = 1 is authorized.
Bitrate
„
CBR and VBR (Local & Remote Flextream or Capped
b )
mode
„
Bitrate, from 2 to 20 Mbit/s (CBR) in 1kbit/s steps
c
„
Seamless bitrate change during configuration by the
User
Table A-13. HD Video processing specifications
Parameter Description