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Motion estimation, Variable video bit-rate, Coding resolutions – TANDBERG E5714 User Manual

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Introduction to the Basic Encoder

Instruction Manual: evolution 5000 E57xx DSNG and DENG Voyager Encoder

Page 1-9

ST.TM.E10076.3

·

Fully exhaustive motion estimation

·

An internal frame synchroniser (see Internal Frame Synchroniser on

Page 1-10)

·

Support for Active Format Descriptor (AFD) (see Chapter 4, Operating

the Equipment Locally, Table 4.36)

·

Support for a variety of Group of Pictures (GOP) structures with a

variable number of B frames

·

Built-in patented adaptive noise reduction circuitry

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·

A logo overlay facility whereby the Encoder is able to overlay

broadcasters trademarks/logos onto the active video

Motion Estimation

Fully Exhaustive motion estimation is used. It takes a macro block of

16 pixels x 16 pixels and then performs an exhaustive search without

subsampling.

Variable Video Bit-rate

The MPEG-2 compression algorithm uses adaptive field/frame coding,

forward and backward predictive processing with motion estimation and

compensation to reduce the bit-rate to the range shown in Table 1.3.

Table 1.3: Video Bit-rate Range

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Video Encoding Mode

4:2:0

4:2:2

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1.5 Mbit/s - 15 Mbit/s

1.5 Mbit/s - 50 Mbit/s

NOTE…
Minimum bit-rate is 0.25 Mbit/s when software option M2/ESO2/PU is purchased.

Coding Resolutions

To provide optimum picture quality over the full range of supported

bit-rates, the encoded picture resolution is controlled automatically

according to the video bit-rate. Alternatively, the user can override this

and select manual control, if desired. Coding resolutions are shown in

Table 1.4.

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Noise reduction is only available when software option M2/ESO2/NR is purchased.

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The video bit-rate depends on the Multiplexer bit-rate which is set.

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4:2:2 is only available when software option M2/ESO2/422 is purchased.

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