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Video

Available settings depend on the stream codec and firmware.

Video Streams

The encoder offers H.264-1, H.264-2, and JPEG streams. Each stream can be disabled individually. Configure other video settings through the VMS where supported.

Consejo

Disable MJPEG if your application does not use it. This avoids enabling an unused stream inadvertently and potentially affecting H.264 performance.

Video Input

Parameter	Description
Audio Association	Associates an audio input with this video input.
Enabled	Enables or disables the video input.
Wide Conversion	Controls conversion between 16:9 and 4:3 aspect ratios. Stretch rescales the entire image to the new shape; Crop preserves proportions and discards pixels at the sides or top and bottom.

Common H.264 and JPEG Settings

Parameter	Description
Enabled	Enables or disables the codec.
Resolution	Selects the resolution of encoded images.
Target Bit Rate	Selects the target codec bit rate.

JPEG

Parameter	Description
Frame Rate	Specifies the JPEG frame rate, which the documented codec maintains regardless of rate-control selection.
Quality	Compression quality from 0 to 100; higher values provide better image quality. Applies to Fixed Quality rate control.
Rate Control	Variable Bit Rate prioritizes bit rate over quality. Fixed Quality uses the selected quality and varies bit rate accordingly.

H.264

Parameter	Description
Profile	Selects Baseline, Main, or High. See the profile comparison below.
Frame Rate	Specifies the codec frame rate.
Rate Control	Variable Bit Rate dynamically adjusts bit rate to meet target quality (QP) and frame rate. Constant Bit Rate prioritizes the target bit rate, varying quality first and frame rate as a last resort.
Min/Max QP	Sets the compression range. Lower values give better quality. Setting the minimum and maximum to the same value requests a specific quality setting.
VBR Aggressiveness	Controls how motion affects bit-rate calculations. Select Conservative, Moderate, Aggressive, or disabled.

H.264 Profiles

• Baseline requires the least processing power but lacks some visual-quality optimizations.
• Main adds in-loop deblocking and CABAC encoding, increasing processing requirements.
• High adds adaptive 8x8 or 4x4 transforms.

The visual difference is generally greater between Baseline and Main than between Main and High, especially when image quality begins to degrade.

VBR Aggressiveness

In scenes without motion, the documented settings allow the bit rate to drop to these fractions of the target:

Setting	Fraction of target bit rate
Conservative	3/4
Moderate	1/2
Aggressive	1/4

Select disabled to turn off this motion-based adjustment.

Text Overlay

Token	Inserted text
%d	Local date/time, yyyy-mm-dd HH:mm:ss
%dz	UTC date/time, yyyy-mm-dd HH:mm:ss
%t	Local time, HH:mm:ss
%tz	UTC time, HH:mm:ss
%c[format]	Local date/time using a custom format
%cz[format]	UTC date/time using a custom format

Custom formats support:

Token	Value
%Y	Four-digit year, 0000–9999
%y	Two-digit year, 00–99
%m	Month, 01–12
%B	Month name
%b	Abbreviated month name
%d	Day of month, 01–31
%A	Weekday name
%a	Abbreviated weekday name
%H	Hour, 00–23
%I	Hour, 01–12
%M	Minute, 00–59
%S	Second, 00–59
%p	AM/PM designation

For example, %cz[%B %d, %H:%M] can produce September 20, 13:19 in UTC.