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Audio Video File Types and Compression
Terms in this set (12)
Developed to improve upon the MP3 audio format, and uses a more advanced form of compression.
A lossless by Josh Coalson and the Xiph.Org
Foundation. FLAC can provide full, CD-quality audio in about half the space of the
MPEG stands for Moving Picture Experts Group — A committee that sets
international standards for the digital encoding of movies and sound.
The most popular codec for storing and transferring
music. Though it employs a lossy compression system which removes frequencies
judged to be essentially inaudible, MP3 still manages to deliver near-CD sound quality
in a file that's only about a tenth or twelfth the size of a corresponding
uncompressed WAV file.
A standard audio format for Windows operating systems, often used for storing
high-quality, uncompressed sound. WAV files can contain CD-quality (44.1 KHz/16-bit)
audio signals. However, CD-quality WAV files require relatively large amounts of
memory — roughly 10 MB per minute of music.
Named after the Joint Photographic Experts Group, JPEG is a lossy codec for
storing and transferring full-color digital images that's often used to post photography
and artwork on the Web. JPEG compression takes advantage of the human eye's
inability to see minute color changes, removing portions of data from the original picture
file. When creating a JPEG file, varying amounts of compression can be selected,
depending on the desired file size and image quality.
An image file of minimally processed data received from a digital camera. Most
camera manufacturers have their own proprietary version of the RAW image format,
and their own file suffixes.
A codec is a way of compressing and decompressing digital files. Each codec
uses a slightly different set of algorithms to accomplish this.
A high-definition digital video format that can record in 1080i and 720p and
still maintain a reasonably small file size. AVCHD files are based on the MPEG4 codec.
The advent of high-definition (HD) televisions and displays spurred the development of
this format, which uses the same resolution as HDTV signals.
A format for storing digital images, commonly used for bullets, icons, and other graphics on the Web. The GIF format is limited to 256
colors, so it's not as commonly used as JPEG for storing digital photos.
TIFF is a flexible container format for digital still images,
commonly used in desktop publishing. TIFF images can incorporate various forms of
compression (like JPEG), or can be uncompressed
QuickTime is a file format for storing and playing back movies with sound.
Though developed and supported primarily by Apple, Inc., this flexible format isn't
limited to Macintosh operating systems — it's also commonly used in Windows systems
and other types of computing platforms. In Windows, QuickTime files usually appear
with the ".MOV" filename extension.
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