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A video coding format [a] (or sometimes video compression format) is a content representation format of digital video content, such as in a data file or bitstream. It typically uses a standardized video compression algorithm, most commonly based on discrete cosine transform (DCT) coding and motion compensation .
They may recompress the video to another format in a process called transcoding, or may simply change the container format without changing the video format. The disadvantages of transcoding are that there is quality loss when transcoding between lossy compression formats, and that the process is highly CPU -intensive.
A short video explaining the concept of video codecs. A video codec is software or hardware that compresses and decompresses digital video.In the context of video compression, codec is a portmanteau of encoder and decoder, while a device that only compresses is typically called an encoder, and one that only decompresses is a decoder.
Compressor (Mac OS X) MPEG Video Wizard DVD (Windows) ProCoder (Windows) QuickTime Pro (Mac OS X, Windows) Roxio Creator (Windows) Sorenson Squeeze; Telestream Episode (Mac OS X, Windows) TMPGEnc (Windows) Wowza Streaming Engine with included Wowza Transcoder feature (Linux, Mac OS X, Windows) Zamzar - Premium service (Web application) Zencoder ...
Although lossless video compression codecs perform at a compression factor of 5 to 12, a typical H.264 lossy compression video has a compression factor between 20 and 200. [ 69 ] The two key video compression techniques used in video coding standards are the DCT and motion compensation (MC).
1 millisecond (1 ms) – cycle time for frequency 1 kHz; duration of light for typical photo flash strobe; [5] time taken for sound wave to travel about 34 cm; repetition interval of GPS C/A PN code 1 millisecond – time taken for light to travel 204.19 km in a single mode fiber optic cable for a wavelength of 1550 nm (frequency: 193 THz).
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7.4 [5] 2021 GPL-2.0-or-later: professional Cinelerra-GG Infinity: Open Source Community Linux 2016 [b] 2022-08 [6] 2022-08-31 GPL-2.0-or-later: professional Corel VideoStudio: Corel Corporation: Windows 1993 [c] VS 2021 2021 Trialware: prosumer CyberLink PowerDirector: CyberLink: Windows 2001 20 2021 Commercial: prosumer DaVinci Resolve ...