Ericsson AVP 4000, Reference Manual, Page: 124 / 422

Getting Started
3-88 1/1553-FGC 101 1790 Uen Y
HD HEVC Main Profile Level 4.1 High Tier 4:2:0 8 bit is supported by professional
STBs and allows higher bit rates to be used. Typically this profile is used for bit rates
above 25 Mbps.
HEVC UHDTV 4:2:0 Recommendation
For UHD HEVC Main 10 Profile Level 5.1 High Tier 4:2:0 10 bit, the typical bit rate is
around 30 Mbps.
HEVC HDTV and UHDTV 4:2:2 Recommendation
On video with strong color content on 4:2:2 HEVC HDTV, the bit rate should be set
at 9 Mbps or higher for HDTV and 20 Mbps for UHDTV. At a bit rate below 9 Mbps
for HDTV and 20 Mbps for UHDTV, the video quality is likely to be better in the 4:2:0
format. Video content with less color, e.g. film material, the bit rate can also be used
at a lower bit rate in 4:2:2 format.
HEVC HDTV and UHDTV 10-bit Recommendation
The 10 bit format can be used at the same bit rate as in 8 bit even at low bit rates.
There is no cross-over in video quality between 8 bit and 10 bit. Even at low bit
rates, the 10 bit format can remove contour artifacts on flat areas or on fade
changes.
Horizontal Bandwidth
Always set to 100% for Contribution and Distribution applications
Inloop Filter
The default (recommended) setting is Normal . Setting the Inloop Filter to Low can
be used to improve sharpness (e.g., in grass in sports sequences) at the expense of
increased blocking artifacts.
Auto mode is designed to be adaptive and alter the filter strength on a per-picture
basis, and will generally lower the filter strength on sports content to improve the
sharpness in grass, albeit at the expense of increased blocking artefacts on the
crowd and players perhaps, but will revert back to normal or higher filter strength on
other content.
3.11 How to Configure and Use Video Input Detection
Overview
The CE VCM’s are capable of detecting if there is a valid video stream available at
the SDI/HD-SDI input. The VCM can be set up to report whenever it detects a
format change in the input video stream, or it can even modify encoding parameters
to suit.