User Manual

DR900S-2CH
75
Video settings
– Resolution
Select the resolution and frame rate. For example, "FHD@30 + FHD@30" means the front camera records Full HD video at 30frames per
second, and the rear camera records Full HD video at 30frames per second.
Note
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The playback of 4K UHD resolution and/or H.265 coded videos depends on your computer's hardware and software. Older
computers may not support 4K UHD or H.265 video playback. If you encounter issues please check your computer's video
playback capabilities.
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At “4K UHD@30 (Extreme) + FHD@30” resolution , the image quality is automatically set to Highest (Extreme) and Video segment
length to 1min. These settings can not be changed.
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Frame rate may vary during Wi-Fi streaming.
– Video Codec
Choose between H.265 (HEVC) and H.264 (AVC).
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H.265 (HEVC) is recommended, particularly for 4K UHD resolution recording. In comparison to AVC, HEVC oers about double the data
compression ratio at the same level of video quality. However, older devices may not support HEVC video playback.
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H.264 (AVC) can be chosen for compatibility with older desktop and mobile devices.
– Image quality
At "4K UHD (Extreme) + FHD" resolution the image quality is xed to Highest (Extreme) (25Mbit/s + 10Mbit/s). At other resolution settings
you can adjust the recording image quality (bit rate). Choose between:
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Highest (Front: 12Mbit/s, Rear: 10Mbit/s)
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High (Front: 10Mbit/s, Rear: 8Mbit/s)
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Normal (Front: 8Mbit/s, Rear: 6Mbit/s)
These are the maximum bit rates when the resolution is set to "4K UHD@30 + FHD@30".
Increasing the image quality will increase the size of the video les. Loading and copying time will increase accordingly.
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