2741 Resource Interchange File Format (RIFF) Audio, Video RIFF (Resource Interchange File Format) is a structured framework for multimedia files. Rather than being a precise file format, RIFF serves as a broader structure that encompasses specific file formats, including several subtypes. The fundamental component of a RIFF file is a chunk, identifiable by a unique four-character code. Applications such as viewers can bypass chunks with unfamiliar codes. A core RIFF chunk starts with a second distinctive four-character code identifying the specific RIFF variant or subtype. Applications rendering RIFF files can disregard chunks with unknown labels. Chunks can also be layered within each other. While the RIFF structure underpins several critical file formats, it has not been employed as the enclosing structure for any formats developed post the mid-1990s. 231 New York Public Library / New York Public Library 01 Aug 2023 01 Aug 2023 fdd000025 Library of Congress Format Description Identifier fmt/1886 PUID 2227 RIFF BOF:'RIFF' 1 Absolute from BOF 0 0 52494646 Has lower priority than 60 CorelDraw Drawing Has lower priority than 64 Corel R.A.V.E. Has lower priority than 65 Corel Presentation Exchange File Has lower priority than 66 Corel Presentation Exchange File Has lower priority than 314 CD Audio Has lower priority than 444 CorelDraw Drawing Has lower priority than 445 CorelDraw Drawing Has lower priority than 552 CorelDraw Drawing Has lower priority than 553 CorelDraw Drawing Has lower priority than 556 CorelDraw Drawing Has lower priority than 557 CorelDraw Drawing Has lower priority than 654 Waveform Audio Has lower priority than 655 Audio/Video Interleaved Format Has lower priority than 1134 Microsoft Animated Cursor Format Has lower priority than 1211 CorelDraw Drawing Has lower priority than 1213 CorelDraw Drawing Has lower priority than 1217 Corel R.A.V.E. Has lower priority than 1218 Corel R.A.V.E. Has lower priority than 1251 CorelDraw Drawing Has lower priority than 1252 CorelDraw Drawing Has lower priority than 1354 WebP Has lower priority than 1355 WebP Has lower priority than 1356 WebP Has lower priority than 1420 RIFF Palette Format Has lower priority than 1619 CD-ROM/XA (eXtended Architecture) Has lower priority than 1728 Microsoft xWMA Has lower priority than 1760 Downloadable Sounds Audio Has lower priority than 1761 RIFF-based MIDI Has lower priority than 1762 DirectMusic Segment File Format Has lower priority than 1763 DirectMusic Style File Format Has lower priority than 1767 QCP Audio File Format Has lower priority than 1960 4X Movie File Has lower priority than 2783 CorelDraw Drawing Has lower priority than 2823 Melco OFM Project Has lower priority than 3898 CD Architect Project File