What is Codecs?
Need of Codecs:
- The Codecs stands for "Code/Decode" and "Compressor/Decompressor".
- Codec is program that compresses data to enable faster transmission and decompresses received data.
- Codecs are compression technologies and have two components, an encoder to compress the files, and a decoder to decompress.
- There are codecs for data (PKZIP), still images (JPEG, GIF, PNG), audio (MP3, AAC) and video (Cinepak, MPEG-2, H.264, VP8).
Need of Codecs:
- Codec is a physical piece of hardware responsible for turning analog video or audio into a digital format and vice-versa.It is also used in image conversions.
- Without Codecs, downloads would be take three to five times longer than they do now.
- The video and music files area large they difficult to transfer across the internet quickly. So, Codecs are needed to process quickly.
Codecs for Images:
- The Image Codecs is method of compression or decompression of a image file or image data.
- The various Image codecs are technically differentiated from each other based on various factors which includes compression technology / algorithm, platform supported, sampling, OS supported etc.
There are various kinds of image Codecs are:
- BMP
- GIF
- JPEG
- JPEG 2000
- MJPEG
- PNG
- WBMP
- TIFF etc.
| BMP | GIF | JPEG | JPEG 2000 | PNG | |
|---|---|---|---|---|---|
| Stands for | Bitmap | Graphics Interchange Format | Joint Photographic Experts Group | Joint Photographic Experts Group 2000
(It is created in 2000 year) |
Portable Network Graphics |
| File Extension | .bmp | .gif,.gfa | .jpg,.jpeg,.jpe | .jp2, .j2k | .png |
| Quality | Good | Good | Good | Excellent | Better |
| Suits for | Images | Animation | Photographs | Photographs | Line Arts |
| Animation | No | Yes | No | No | No |
| Compression Type | Lossless Compression | Lossless Compression | Lossy Compression | Lossy/Lossless Compression | Lossless Compression |
JPEG 2000 encoding and decoding process cycle:
Examples for Codecs for Images:
Examples for Codecs for Images:
