Chroma Plus FAQ
Frequently Asked Questions about Chroma+
(Chroma Plus)
Q: What are the specifications of Chroma+?
A: Chroma+ is a small-form-factor, Decoder-only device for receiving streams from Streambox Chroma and Software Encoders, whether via the Streambox Cloud Service or directly.
Chroma+ supports both ACT-L3 and ACT-L5 codecs from Streambox. With the relevant licenses, it supports the following:
Chroma+ supports both ACT-L3 and ACT-L5 codecs from Streambox. With the relevant licenses, it supports the following:
- video resolutions from SD up to 4K DCI
- up to 8 channels of AAC or PCM audio
- HDMI output
- AES Decryption (128-bit by default, up to 256-bit with license)
- Chroma subsampling up to 4:4:4
- Up to 12-bit color bitdepth
- Web Control panel, just like other Chroma hardware
- Support for Dolby Vision
Q: How do I find out the IP address of Chroma+?
A: Connect the HDMI output to the monitor; the IP address is displayed in the standby video screen.Q: Can I output sound from Chroma+ to a soundbar via HDMI?
A: For up to 8-ch audio, we have confirmed you can use either Soundbars or AV Receivers as the main output device. Even thoughLG C9/8 monitors are limited to 2-CH in L-PCM mode, going through A/V receiver or Soundbars HDMI-IN will render 8-CH audio.Currently we have confirmed with LG SK9Y (5.1.2 w/satellite speakers) soundbar andOnkyo TX-NR676 (5.1.2) A/V receiver. We expect other 7.1 bars and receivers to be compatible.
To view HDR10 content without tone mapping on TV, please use "Absolute" mode.
Direct output in HDMI 10 bit without Dolby Vision is not supported, e.g. output to X300 without Dolby Vision is limited to 8-bit 4:4:4 output.
Q: How does one get 4:2:2 10-bit video out of the HDMI port on the Chroma+?
A: Chroma+ only supports 10-bit or 12-bit video over Dolby Vision tunnel with Dolby Vision compatible TVs.To view HDR10 content without tone mapping on TV, please use "Absolute" mode.
Direct output in HDMI 10 bit without Dolby Vision is not supported, e.g. output to X300 without Dolby Vision is limited to 8-bit 4:4:4 output.
Q: What is Absolute Mode?
A: When not using Dolby Vision or HDR10 metadata, use Absolute mode to output to a Dolby Vision-compatible monitor without tonal mapping.
Originally Dolby Absolute Mode was implemented for screen calibration, but it our case it can be used to approximateHDR10 X300 on a consumer DolbyVision TV, with some advantages, like support for correctcolor space and 12-bit color.
Absolute Mode does following:
- Turns Dolby Vision tunneling on TV ( 12-bit 4:2:2)
- Disables meta-data and all default tone mapping
- Selects desired color space including P3 D65 PQ
- Dependingon TV model, Master/Min/Max are used, where Max is a clipping point