Is a codec and a dcoder the same thing?

Answer 1

Nopeeeeeeee!!

they are inverse....
Codec is certain algorithm which converts the given file format to specified file system like *mpeg*

while dcoder...is something that converts tht *mpeg* to some other file format(i m just saying tht mpeg it can be any file)
like e.g.

Decoder is being used in Nero!
codec..kazaa-lite codec for mediaplayer.

hope this would help!:)

Answer 2

Yes.

Qoute:

A Codec is a device or program capable of performing encoding and decoding on a digital data stream or signal. The word "codec" is a portmanteau of any of the following: 'Compressor-Decompressor', 'Coder-Decoder', or 'Compression/Decompression algorithm'.

Codecs encode a stream or signal for transmission, storage or encryption and decode it for viewing or editing. Codecs are often used in videoconferencing and streaming media solutions. A video camera's ADC converts its analog signals into digital signals, which are then passed through a video compressor for digital transmission or storage. A receiving device then runs the signal through a video decompressor, then a DAC for analog display. A "codec" is a generic name for a video conferencing unit.

An audio compressor converts analog audio signals into digital signals for transmission or storage. A receiving device then converts the digital signals back to analog using an audio decompressor, for playback.

The raw encoded form of audio and video data is often called essence, to distinguish it from the metadata information that together make up the information content of the stream and any "wrapper" data that is then added to aid access to or improve the robustness of the stream.

Most codecs are lossy, in order to get a reasonably small file size. There are lossless codecs as well, but for most purposes the almost imperceptible increase in quality is not worth the considerable increase in data size. The main exception is if the data will undergo more processing, especially editing, in the future, in which case the repeated lossy encoding could degrade the quality of the eventual file too much. Using more than one codec or encoding scheme throughout processing can also degrade quality but there are many situations where this cannot be avoided.

Many codecs are designed to emphasize certain aspects of the media to be encoded. For example, a digital video (using a DV codec) of a sports event, such as baseball or soccer, needs to encode motion well but not necessarily exact colors, while a video of an art exhibit needs to perform well encoding color and surface texture. There are hundreds or even thousands of codecs ranging from free ones to ones costing hundreds of dollars or more.

Many multimedia data streams need to contain both audio and video data, and often some form of metadata that permits synchronization of the audio and video. Each of these three streams may be handled by different programs, processes, or hardware; but for the multimedia data stream to be useful in stored or transmitted form, they must be encapsulated together in a container format.

An endec is a similar (but not identical) concept for hardware.

While many people explain that AVI is a codec, they are incorrect. AVI (nowadays) is a container format, which many codecs might use (although not to ISO). There are other well known alternative containers such as Ogg, ASF, QuickTime, RealMedia and MP4.

end qoute

Answer 3

it can be yes .... a codec can be both an encoder and a decoder and a decoder is generally more specific and isnt necessarily the whole codec but rather more of "what you need to play the file"

Answer 4

Hi,

Well sort of, a codec is short for (co)mpressor/(dec)ompressor. All it is, is a sort of driver that tells the multimedia software how to read or decompress a specified media file.

Pretty cool stuff.

Answer 5

Yes and no.

A codec can both encode and decode to whatever format it is that it's made for.

A decoder can only decode.