Jump to navigation Jump to search This portable k lite codec is about encoding and decoding a digital data stream. A codec is a device or computer program for encoding or decoding a digital data stream or signal. A codec encodes a data stream or a signal for transmission and storage, possibly in encrypted form, and the decoder function reverses the encoding for playback or editing.
Later, the name was also applied to software for converting between digital signal formats, including compander functions. A modem is a contraction of modulator-demodulator. The telecommunications industry referred to the device as a dataset. It converts digital data from computers to analog signals for transmission over telephone lines.
On the receiving end the analog signal is converted back to digital data. An audio codec converts analog audio signals into digital signals for transmission or encodes them for storage. A receiving device converts the digital signals back to analog form using an audio decoder for playback. An example of this are the codecs used in the sound cards of personal computers. A video codec accomplishes the same task for video signals.
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In addition to encoding a signal, a codec may also compress the data to reduce transmission bandwidth or storage space. Compression codecs are classified primarily into lossy codecs and lossless codecs. Lossless codecs are often used for archiving data in a compressed form while retaining all information present in the original stream. If preserving the original quality of the stream is more important than eliminating the correspondingly larger data sizes, lossless codecs are preferred. They reduce quality in order to maximize compression. Often, this type of compression is virtually indistinguishable from the original uncompressed sound or images, depending on the codec and the settings used.
Two principal techniques are used in codecs, pulse-code modulation and delta modulation. Codecs are often designed to emphasize certain aspects of the media to be encoded. Audio codecs for cell phones need to have very low latency between source encoding and playback. In contrast, audio codecs for recording or broadcast can use high-latency audio compression techniques to achieve higher fidelity at a lower bit-rate. There are thousands of audio and video codecs, ranging in cost from free to hundreds of dollars or more.
This variety of codecs can create compatibility and obsolescence issues. The impact is lessened for older formats, for which free or nearly-free codecs have existed for a long time. The older formats are often ill-suited to modern applications, however, such as playback in small portable devices. Many multimedia data streams contain both audio and video, and often some metadata that permit synchronization of audio and video. Lower bitrate codecs allow more users, but they also have more distortion.
Beyond the initial increase in distortion, lower bit rate codecs also achieve their lower bit rates by using more complex algorithms that make certain assumptions, such as those about the media and the packet loss rate. Other codecs may not make those same assumptions. AVI is sometimes erroneously described as a codec, but AVI is actually a container format, while a codec is a software or hardware tool that encodes or decodes audio or video into or from some audio or video format. Ubuntu Documentation – What is a codec? Archived from the original on February 19, 2012.
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MPC-HC is now able to play URLs from Youtube and several other video websites. AVI, MKV, MPEG, OGM, MP4, ASF etc. AVI files, or media files that are locked while downloading or sharing. Note: In the past, this application managed open source components against the terms of their respective licenses. The current status of this is unclear. Download the installer and extract to a folder of your choice.