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Chroma Subsample Rate
This BirdDog converter is capable of operating in tow Chroma Subsample modes, 4:2:2 and 4:2:0. According to the NDI specifi-
cation, when you are operating in HD video resolutions the chroma subsampling should be set to 4:2:2 and in 4K is should be
set to 4:2:0.
The BirdDog 4K converter line allows you to override these recommendations depending on your own needs, this can result in
greater representation of colours in your image or less overall video compression. Generally speaking for video-sourced mate-
rial in 4K it is recommended to use 4:2:0, but for computer generated graphics such as gaming and presentations your chroma
subsampling should be set to 4:2:2.
Bit Depth
As with Chroma Subsampling, you are able to select your encoders bit depth. This determines the amount of chroma and luma
gradations there are available to represent any particular colour in your video material. 10-bit video is very much recommended
for digital graphics as it can handle ramps or gradiants much more accurately, but for camera-sourced material 8-bit depth may
be sufficient.
10-Bit support is unique to the BirdDog family of products, and while the video will still be received and displayed on any
NDI-Capable receiver, only BirdDog receivers can decode the full 10-bit signal. Any other device will simply display the 8-bit
material which is coded within the NDI stream.
NDI Output Bandwidth
Birddog Devices allow you to set your target NDI output bitrate. This allows you to select a compression ratio that is more
efficient on your networking infrastructure (lower bandwidth) or higher image quality for critical footage. The scale allows you
to select anywhere from 60mbps to 360mbps.
Loop Out Tally
In addition to the on-board Tally light indicating when the device is being used as either a program or preview source on a
receiver, you are able to select Loop Out Tally. This will add a red/green border to the loop out of the BirdDog device. This is
particularly useful for camera operators who are monitoring the loop out on a video monitor. They will see the colour borders
and know when the device is being prepared or used for a live purpose.
MISCELLANEOUS
DASHBOARD
NETWORK SYSTEM
A/V-SETUP
LOGOUT
4K FAMILY
MISCELLANEOUS
NDI Stream Name:
–
HDMI
APPLY
NDI DECODE
+
NDI Stream Name
When your BirdDog converter generates an NDI stream, it can be identified via it’s name on any NDI-capable receiver. You are
able to nominate the NDI stream name here to give you a more descriptive name of the source you are connecting to. This can
be particularly useful in multi-channel devices or on networks where there are a large amount of NDI streams.
