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Some HDMI 2.0 displays do not support HDCP 2.2. Also, some HDMI 2.0
displays only support data transfer at 10.2 gigabits per second (Gbps), rather
than the maximum 18 Gbps included in the HDMI 2.0 spec. The lower speed
places some limits on how Strato displays 4K Ultra HD content.
Note that some equipment describes HDMI bandwidth in terms of frequency
rather than data rate. A 10.2 Gbps connection or cable may also be called
340 MHz, and an 18 Gbps connection may also be called 600 MHz.
The chart below summarizes how HDMI and HDCP capabilities affect Strato
playback.
Table: Strato output according to display capabilities
HDCP 1.x
HDCP 2.2
HDMI 1.3 and below
1080p 24/30/60
N/A
HDMI 1.4
1080p 24/30/60
2160p 24/30
Not recommended. OSD
performance will be degraded and
some content will display poorly.
HDMI 2.0 @ 10.2 Gbps
1080p 24/30/60
2160p 24/30
10-bit color
2160p 60
8-bit color
HDMI 2.0 @ 18 Gbps
1080p 24/30/60
2160p 24/30/60
10-bit color
Kaleidescape OSD can be rendered
with 4:4:4 chroma
HDMI 2.0a @ 10.2 Gbps
1080p 24/30/60
2160p 24/30
10-bit color
HDR possible with HDR display
2160p 60
8-bit color
HDMI 2.0a @ 18 Gbps
1080p 24/30/60
2160p 24/30/60
10-bit color
HDR possible with HDR display
Kaleidescape OSD can be rendered
with 4:4:4 chroma
Note: in countries using PAL format, content is displayed at 25 or 50 frames per second rather than 30 & 60.
About Chroma Sampling
In addition to bit depth, another factor in how images are displayed is how the
color information is represented. This is usually expressed in terms of three
numbers separated by colons, like 4:4:4 or 4:2:0.
The details of this notation are beyond the scope of this document, but in
summary, 4:4:4 has discrete
luma
(brightness) and
chroma
(color) information
for every pixel in an image. 4:2:0 has discrete luma for every pixel, but the
chroma is averaged across 2x2 clusters of pixels.
4:2:0 significantly reduces the amount of data required for each frame, so a
4:2:0 signal requires less bandwidth than a 4:4:4 signal. In a moving image,
the difference in chroma resolution is not perceptible to most viewers.