data rate

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data rate

[′dad·ə ‚rāt]
(communications)
The number of digital bits per second that are recorded or retrieved from a data storage device during the transfer of a large data block.

data rate

(communications, unit)
(Or "data ransfer rate", "transmission rate") The amount of data transferred per second by a communications channel or a computing or storage device.

Data rate is measured in units of bits per second (written "b/s" or "bps"), bytes per second (Bps), or baud.

When applied to data rate, the multiplier prefixes "kilo-", "mega-", "giga-", etc. (and their abbreviations, "k", "M", "G", etc.) always denote powers of 1000. For example, 64 kbps is 64,000 bits per second. This contrasts with units of storage where they stand for powers of 1024, e.g. 1 KB = 1024 bytes.

data rate

(1) The speed at which data is transferred within the computer or between a peripheral device and the computer, measured in bytes per second. See transfer rate and space/time.

(2) The speed at which audio and video files are encoded (compressed), measured in bits per second (see bit rate).

(3) The transmission speed of a network. For example, 100Base-T Ethernet is rated at 100 Mbps (megabits per second). Also called "bit rate." See space/time.
References in periodicals archive ?
In other words, when the encoding bitrate is high, differences between different compression formats become smaller and may even completely vanish if the encoding bitrate is sufficiently high.
It uses the encoders, players and asset libraries you already have, simply adding new metadata that allows packagers and players to optimize adaptive bitrate streaming.
However, the delay in bitrate switching may cause buffer underflow or sub-optimum Quality-of-Experience (QoE).
Best Practice: Monitor the maximum peak variable bitrate (VBR) of traffic from the encoder, with notification for significant and fluctuating bursts.
The operator produces adaptive bitrate formats for OTT and IPTV formats for telco partnerships -- all accomplished through fast, automated and secure workflows.
Video encoding rate control is designed for satisfying requirement such as encoding at a given bitrate, encoding at given target quality, encoding at the highest possible quality with a constraint of a target bitrate, encoding at a given bitrate with a constraint of a maximum buffer size.
the client can switch to a higher bitrate - if bandwidth permits - on a per segment basis.
Even compared to the previous-generation's MPEG-4 encoding technology, customers can expect to benefit from a 30% reduction in bitrate for the same quality video.
This painstaking process typically took 3 to 4 hours to complete for each bitrate tested.
At the 2017 NAB Show in April, Dejero embraced HEVC by demonstrating a novel implementation of this new compression technology that provides greatly improved picture quality in low bitrate environments, especially when combined with real-time adaptive bitrate control and Dejero's auto transport technology.
Also, a target bitrate is often given as a parameter for video encoding according to the application environment.