Cinepak is a video codec developed by SuperMatch, a division of SuperMac Technologies, and released in 1992 as part of Apple Computer's Quicktime video suite. A video Codec is a device or Software that enables Video compression and/or decompression for digital video UMAX Technologies (originally UMAX Computer Corporation) is a manufacturer of computer products including Scanners mice, and Flash drives based QuickTime is a Multimedia framework developed by Apple Inc, capable of handling various formats of Digital video, Media clips sound text It was designed to encode 320x240 resolution video at 1x (150 kbyte/s) CD-ROM transfer rates. A kilobyte (derived from the SI prefix Kilo -, meaning 1000 is a unit of Information or Computer storage equal to either 1024 CD-ROM (an initialism of "Compact Disc Read-Only Memory " is a pre-pressed Compact Disc that contains data accessible to but not writable The codec was ported to the Windows platform in 1993. It was also used on first-generation and some second-generation CD-ROM game consoles, such as the Atari Jaguar CD, Sega CD, Sega Saturn, and 3DO. The Atari Jaguar CD or Jag CD was a CD-ROM peripheral for the Atari Jaguar Video game console. The is an add-on device for the Sega Mega Drive that was released in Europe, Australia, New Zealand, Japan. The is a 32-bit Video game console that was first released on November 22 1994 in Japan, May 11 1995 in North America 3DO Interactive Multiplayer (often called simply 3DO) was a Video game console originally produced by Panasonic in.
It was the primary video codec of early versions of QuickTime and Microsoft Video for Windows, but was later superseded by Sorenson Video, Intel Indeo, and most recently MPEG-4 and H.264. QuickTime is a Multimedia framework developed by Apple Inc, capable of handling various formats of Digital video, Media clips sound text Video for Windows (VfW also referred to as Video Compression Manager (VCM was a Multimedia framework developed by Microsoft that allowed Microsoft Windows The Sorenson codec (also known as Sorenson Video Codec, Sorenson Video Quantizer or SVQ) is a Digital video Codec devised by the company Indeo Video (commonly known now simply as "Indeo" is a Video codec developed by Intel in 1992 MPEG-4 is a collection of methods defining compression of audio and visual (AV digital data H264 is a standard for Video compression. It is also known as MPEG-4 Part 10, or MPEG-4 AVC (for Advanced Video Coding) However, movies compressed with Cinepak are generally still playable in most media players.
Cinepak is based on vector quantization, which is a significantly different algorithm from the discrete cosine transform (DCT) algorithm used by most current codecs (in particular the MPEG family, as well as JPEG). Vector quantization is a classical Quantization technique from Signal processing which allows the modeling of probability density functions by the distribution of A discrete cosine transform ( DCT) expresses a sequence of finitely many data points in terms of a sum of Cosine functions oscillating at different frequencies The Moving Picture Experts Group, commonly referred to as simply MPEG, is a Working group of ISO / IEC charged with the development of video and This permitted implementation on relatively slow CPUs, but tended to result in blocky artifacting at low bitrates, which explained the criticism levelled at the FMV-based video games. In Telecommunications and Computing, bitrate (sometimes written bit rate, data rate or as a Variable R or f b Full motion video based games, usually abbreviated as FMV-based games, are Video games that rely upon pre-recorded TV -quality movie or
Cinepak divides a movie into key images and intra-coded images. Each image is divided into a number of horizontal bands which have individual 256-color palettes transferred in the key images. Each band is subdivided into 4x4 pixel blocks. The compressor uses vector quantization to determine the one or two band palette colors which best match each block and encodes runs of blocks as either one color byte or two color bytes plus a 16-bit vector which determines which pixel gets which color. Vector quantization is a classical Quantization technique from Signal processing which allows the modeling of probability density functions by the distribution of The data rate can be controlled within a narrow range by adjusting the rate of key versus intra-coded frames and by adjusting the permitted error in each block and the block run-length.
The original name of this codec was CompactVideo, which is why its FourCC identifier is "CVID". A FourCC (literally four - c haracter c ode is a sequence of four Bytes used to uniquely identify data formats
External links
- Compression Technologies, Inc. - current developers of Cinepak
- Technical Description of the Cinepak Codec
Dapyx Software network: MP3 Explorer | Ebook Manager | Zenithic