Resource Interchange File Format

The Resource Interchange File Format (RIFF) is a generic file container format for storing data in tagged chunks. It is primarily used to store multimedia such as sound and video, though it may also be used to store any arbitrary data.

The Microsoft implementation is mostly known through container formats like AVI, ANI and WAV, which use RIFF as their basis.

History

RIFF was introduced in 1991 by Microsoft and IBM, and was presented by Microsoft as the default format for Windows 3.1 multimedia files. It is based on Electronic Arts' Interchange File Format, introduced in 1985 on the Commodore Amiga, the only difference being that multi-byte integers are in little-endian format, native to the 80x86 processor series used in IBM PCs, rather than the big-endian format native to the 68k processor series used in Amiga and Apple Macintosh computers, where IFF files were heavily used.

In 2010 Google introduced the WebP picture format, which uses RIFF as a container.

Ostinato

In music, an ostinato [ostiˈnaːto] (derived from Italian: stubborn, compare English: 'obstinate') is a motif or phrase that persistently repeats in the same musical voice, usually at the same pitch. Well-known ostinato-based pieces include both classical compositions such as Ravel's Boléro and popular songs such as Donna Summer and Giorgio Moroder's "I Feel Love" (1977) and The Verve's "Bitter Sweet Symphony" (1997).

The repeating idea may be a rhythmic pattern, part of a tune, or a complete melody in itself. Both ostinatos and ostinati are accepted English plural forms, the latter reflecting the word's Italian etymology. Strictly speaking, ostinati should have exact repetition, but in common usage, the term covers repetition with variation and development, such as the alteration of an ostinato line to fit changing harmonies or keys.

Within the context of film music, Claudia Gorbman defines an obstinate as a repeated melodic or rhythmic figure that propel scenes that lack dynamic visual action.

Riff (disambiguation)

Riff, RIFF, The 'Riff, or Riffs may refer to:

Acronyms

JPEG

JPEG (/ˈdʒeɪpɛɡ/ JAY-peg) is a commonly used method of lossy compression for digital images, particularly for those images produced by digital photography. The degree of compression can be adjusted, allowing a selectable tradeoff between storage size and image quality. JPEG typically achieves 10:1 compression with little perceptible loss in image quality.

JPEG compression is used in a number of image file formats. JPEG/Exif is the most common image format used by digital cameras and other photographic image capture devices; along with JPEG/JFIF, it is the most common format for storing and transmitting photographic images on the World Wide Web. These format variations are often not distinguished, and are simply called JPEG.

The term "JPEG" is an abbreviation for the Joint Photographic Experts Group, which created the standard. The MIME media type for JPEG is image/jpeg, except in older Internet Explorer versions, which provides a MIME type of image/pjpeg when uploading JPEG images. JPEG files usually have a filename extension of .jpg or .jpeg.

CRW

CRW can be: