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Some early 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 C displays 4K HDR and 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 C
playback.
Table: Strato C 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 Bit Depth
Digital images represent each pixel in an image as a series of bits (ones and
zeroes). The number of bits
used for each pixel is referred to as the “bit depth,”
and is often expressed in terms of the number of bits used for each signal
component. For example, an “8
-
bit” RGB image uses eight bits of data for red,
eight bits for green, and eight for blue, for a total of 24 bits per pixel.
DVD and Blu-ray discs are examples of formats that use 8-bit color.
When more bits are used for each pixel, the digital information can represent
more subtle differences between the colors. Kaleidescape’s 4K HDR and 4K
Ultra HD downloads use 10-bit color (30 bits total), which produces images with
fewer artifacts, like stair-stepped bands of color visible in images of a blue sky.
