Variable Bit Rate

Variable Bit Rate
WikiV
A compression scheme in which each unit of input material can be compressed to different sizes. For MPEG-2 video, for example, this means that “easier” sequences (that is, with no motion) can compress to very small sizes, whereas “hard” sequences (with lots of motion and scene cuts) can compress to much larger sizes. VBR compression can take better advantage of the overall available bandwidth of a video transmission or DVD player by allocating the available bits intelligently to the difficult parts of a sequence.

Audio and video glossary. 2014.

См. также в других словарях:

  • Variable Bit Rate — Variable bitrate Variable bitrate (ou Variable bit rate, ou encore VBR), est un terme anglais que l on peut traduire en français par : « taux d échantillonnage variable », en opposition au constant bitrate (CBR). Description… …   Wikipédia en Français

  • Variable bit rate — Variable bitrate Variable bitrate (ou Variable bit rate, ou encore VBR), est un terme anglais que l on peut traduire en français par : « taux d échantillonnage variable », en opposition au constant bitrate (CBR). Description… …   Wikipédia en Français

  • Variable Bit Rate — Variable Bit Rate,   VBR …   Universal-Lexikon

  • Variable Bit Rate —    Abbreviated VBR. A connection oriented Asynchronous Transfer Mode service for real time applications for which minor data loss is acceptable, and for non real time VBR applications such as transaction processing.    See also Asynchronous… …   Dictionary of networking

  • variable bit rate (VBR) — TV A way of coding video to maximize image quality over a connection’s available bandwidth, usually provided by more recent codecs …   Audio and video glossary

  • bit rate — ● ►en lof. m. ►NETATM►COMM Quantité moyenne de bits transitant sur un réseau. C est une mesure de son débit. Les quatre variantes ABR (Available Bit Rate), UBR (Unspecified Bit Rate), CBR (Constant Bit Rate) et VBR (Variable Bit Rate) sont… …   Dictionnaire d'informatique francophone

  • Bit rate — Bit rates Decimal prefixes (SI) Name Symbol Multiple kilobit per second kbit/s 103 megabit per second Mbit/s 106 gigabit per second Gbit/s 109 …   Wikipedia

  • Bit rate variable — Saltar a navegación, búsqueda VBR son las siglas de variable bitrate (bitrate variable). El bitrate es la relación de bits por segundo que consume un fichero de audio, o de vídeo. Este método de compresión consigue una mayor calidad de sonido… …   Wikipedia Español

  • BIT RATE — T&F In telecommunications and computing, bit rate (sometimes written bitrate, data rate or as a variable R) is the number of bits that are conveyed or processed per unit of time. The bit rate is quantified using the bits per second (bit/s or bps) …   Audio and video glossary

  • Constant Bit Rate —    Abbreviated CBR. A type of Asynchronous Transfer Mode (ATM) service reserved for voice or video or other data that must be transmitted at a constant rate and are intolerant of data loss.    See also Asynchronous Transfer Mode; Available Bit… …   Dictionary of networking


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