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Topic: Bitstream format

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	Bitstream - Wikipedia, the free encyclopedia
		Bitstreams are used extensively in telecommunications and computing: for example, the SDH communications technology transports synchronous bitstreams, and the TCP communications protocol transports a bytestream without synchronous timing.
		The term bitstream is frequently used to describe the configuration data to be loaded into a field programmable gate array.
		The detailed format of the bitstream for a particular FPGA chip is usually considered proprietary to the FPGA vendor.
	en.wikipedia.org /wiki/Bitstream (198 words)

	The Annodex annotation format for time-continuous bitstreams, Version 2.0 (Site not responding. Last check: 2007-10-13)
		The format of Annodex bitstreams consists of interleaved bitstreams of time-continuous data and structured XML mark-up of an annotation bitstream.
		The Ogg encapsulation format version 0[11] was chosen as the encapsulation format for Annodex format bitstreams as it provides for all the requirements and has proven reliable and stable.
		As the format of the encapsulated media bitstreams is not prescribed and is identified through the "Content-type" Message header field in that bitstream's bos page, it is possible to encrypt or sign that media bitstream and then mark it accordingly with a MIME type that signifies the encryption.
	www.annodex.net /TR/draft-pfeiffer-annodex-01.html (5297 words)

	Ogg (Linux Reviews)
		Files ending in the.ogg extension may be of any Ogg media filetype, and because the format is free, Ogg's various codecs have been incorporated into a number of different free and commercial media players as well as portable media players from different manufacturers.
		The Ogg bitstream format, spearheaded by the Xiph.org Foundation, has been created as the framework of a larger initiative aimed at developing a set of components for the coding and decoding of multimedia content which are both freely available and The format consists of chunks of data each called an Ogg Page.
		Multiple bitstreams may be multiplexed in the file where pages from each bitstream are ordered by the seek time of the contained data.
	linuxreviews.org /dictionary/Ogg (1573 words)

	[No title]
		The Ogg transport bitstream is designed to provide framing, error protection and seeking structure for higher-level codec streams that consist of raw, unencapsulated data packets, such as the Vorbis audio codec or the upcoming Tarkin and Theora video codecs.
		Requirements for a generic encapsulation format The design idea behind Ogg was to provide a generic, linear media transport format to enable both file-based storage and stream-based transmission of one or several interleaved media streams independent of the encoding format of the media data.
		The format of the bos page is dependent on the codec and therefore MUST be given in the encapsulation specification of that logical bitstream type.
	www.ietf.org /rfc/rfc3533.txt (3598 words)

	Roxen Community: RFC 3533 The Ogg Encapsulation Format Version 0 (Informational)
		This document describes the Ogg bitstream format version 0, which is a general, freely-available encapsulation format for media streams.
		The Ogg bitstream format has been developed as a part of a larger project aimed at creating a set of components for the coding and decoding of multimedia content (codecs) which are to be freely available and freely re-implementable, both in software and in hardware for the computing community at large, including the Internet community.
		In this example, there are two chained physical bitstreams, the first of which is a grouped stream of three logical bitstreams A, B, and C. The second physical bitstream is chained after the end of the grouped bitstream, which ends after the last eos page of all its grouped logical bitstreams.
	community.roxen.com /developers/idocs/rfc/rfc3533.html (3555 words)

	MPEG-4 Structured Audio (Site not responding. Last check: 2007-10-13)
		Other sorts of data may also be conveyed in the bitstream; these data allow continuous control of instruments during their execution, data needed for continuous processing (for example, frames of vocal-tract-shape data for a singing synthesizer), or tempo and pitch changes in the synthesis process.
		To decode a bitstream transmitted in the SA format, a real-time synthesis process is executed.
		This bitstream will be nearly the same size as the CELP bitstream; it only requires a fixed constant-size data block to transmit the orchestra containing the decoder, and then the rest of the bitstream is the same size.
	sound.media.mit.edu /mpeg4/sa-tech.html (2175 words)

	Bitstream versus pcm debate for high-density compact disc
		Indeed, it is a primary attribute of bitstream that there is high correlation between bit pattern and audio data as signal recovery is implemented by processing the bitstream directly with a low-pass filter.
		Although there is a certain elegance to the bitstream approach which is attractive for a simple recording chain of a back-to-back ADC and DAC, this elegance is lost when the needs of the recording studio are considered, even when this is a relatively 'direct' audiophile process.
		We recognise the advantage of bitstream in a basic system and the natural extension of ultrasonic bandwidth, however this is easily lost in post-processing where there is a danger of intermodulation with high-frequency audio and out-of-band shaped noise.
	www.meridian-audio.com /ara/bitstrea.htm (2417 words)

	Bitstream Syntax Description Language: Application of XML-Schema to Multimedia Content Adaptation
		In a simplified view, the bitstream is organized as a sequence of packets containing a header, identified by a two-byte marker with the hexadecimal value FF91, followed by two bytes indicating the length of the header, and four bytes indicating the packet number.
		Due to the scalable properties of the bitstream, the packet data does not need to be decoded to adapt the image, and may be manipulated as a whole.
		Once the client capabilities have been translated in terms of bitstream quality, the parameters can be used to transmit the adaptation values to the style sheet, for instance the number of SNR layers to be kept, or the number of temporal levels to be suppressed.
	www2002.org /CDROM/alternate/334 (7189 words)

	Overview
		One of the simplest forms is the GIF87a format, consisting of essentially two headers and blocks of coded image data using the Lempel-Ziv-Welch compression.
		An additional feature of combining type declaration and bitstream representation is that the underlying object hierarchy of the base programming language (C++ or Java), becomes quite naturally the object hierarchy for bitstream representation purposes as well.
		In the bitstream format, such values must be extracted via bit string manipulations, according to the specified syntax.
	flavor.sourceforge.net /overview.htm (3240 words)

	Bitstream format - Wikipedia, the free encyclopedia
		A bitstream format is the format of the data found in some stream of bits used in a digital communication or storage application.
		The term typically refers to the format of the output of an encoder or the format of the input to a decoder when using data compression.
		Standardized interoperability specifications such as the video coding standards produced by MPEG and the ITU-T and the audio coding standards produced by MPEG often specify only the bitstream format and the decoding process, while allowing individual encoder implementations to be designed using any methods whatsoever that produce bitstreams that conform to the specified bitstream format.
	en.wikipedia.org /wiki/Bitstream_format (187 words)

	[No title]
		Overview of the ANNODEX(TM) bitstream format The format of ANNODEX(TM) bitstreams consists of a bitstream of time-continuous data interspersed with structured XML mark-up of an annotation bitstream.
		As such, knowledge of the Ogg bitstream format as specified in the Ogg RFC [10] is presumed.
		As the format of the encapsulated media bitstreams is not prescribed and is identified through the "mimetype" field in that bitstream's bos page, it is possible to encrypt or sign that media bitstream and then mark it accordingly with a mime type that signifies the encryption.
	xml.coverpages.org /draft-pfeiffer-annodex-00.txt (5323 words)

	Font Fusion: Plug-In Font Engine for Symbian OS
		Bitstream can achieve over 2-to-1 compression from the original to compressed size of a font.
		Bitstream’s Chinese, Japanese, and Korean stroke-based fonts are extremely compact, high-quality fonts for consumer electronics devices.
		Bitstream has also developed a unified, stroke-based font that includes over 37,000 Asian characters.
	www.bitstream.com /font_rendering/products/font_fusion/symbian.html (575 words)

	Ogg Vorbis Documentation
		A physical bitstream consists of multiple logical bitstreams multiplexed at the page level and may include a 'meta-header' at the beginning of the multiplexed logical stream that serves as identification magic.
		Logical bitstreams may not be mapped/multiplexed into physical bitstreams without restriction.
		Such a physical bitstream obeys all the rules of both grouped and chained multiplexed streams; the groups, when unchained, must stand on their own as a valid concurrently multiplexed bitstream.
	www.xiph.org /vorbis/doc/oggstream.html (968 words)

	FLAC - format
		Apart from reserved patterns, in places the format specifies invalid patterns, meaning that the patterns may never appear in any valid bitstream, in any prior, present, or future versions of the format.
		The picture format is similar to the APIC frame in ID3v2.
		FLAC specifies a subset of itself as the Subset format.
	flac.sourceforge.net /format.html (4618 words)

	Roxen Community: RFC 3534 The application/ogg Media Type (Standards Track)
		The bitstream format in itself is documented in [1].
		The Ogg bitstream format is binary data, and must be encoded for non-binary transport; the Base64 encoding is suitable for Email.
		As the Ogg bitstream file is a container format and only a carrier of content (such as Vorbis audio) with a very rigid definition (see [1]), this format in itself is not more vulnerable than any other content framing mechanism.
	community.roxen.com /developers/idocs/rfc/rfc3534.html (868 words)

	Ogg Vorbis Documentation
		The Ogg transport bitstream is designed to provide framing, error protection and seeking structure for higher-level codec streams that consist of raw, unencapsulated data packets, such as the Vorbis audio codec or Theora video codec.
		For stream based storage (such as files) and transport (such as TCP streams or pipes), Vorbis uses the Ogg bitstream format to provide framing/sync, sync recapture after error, landmarks during seeking, and enough information to properly separate data back into packets at the original packet boundaries without relying on decoding to find packet boundaries.
		Packets are not restricted to a maximum size, although excessively large packets in the data stream are discouraged; the Ogg bitstream specification strongly recommends nominal page size of approximately 4-8kB (large packets are foreseen as being useful for initialization data at the beginning of a logical bitstream).
	www.xiph.org /vorbis/doc/framing.html (1908 words)

	[No title]
		Abstract The Ogg Bitstream Format aims at becoming a general, freely-available standard for transporting multimedia content across computing platforms and networks.
		Security Considerations: As the Ogg bitstream file is a container format and only a carrier of content (such as Vorbis audio) with a very rigid definition (see [1]), this format in itself is not more vulnerable than any other content framing mechanism.
		Interoperability considerations: The Ogg bitstream format has proved to be widely implementable across different computing platforms.
	www.ietf.org /rfc/rfc3534.txt (983 words)

	G.729 bitstream file format
		payload from rtpdump payload format to the bitstream format required
		The RTP dump from a G729 encoder is usually coded into an RTP format described
		into a bitstream that is acceptable to the ITU G.729 decoder as the input
	www.dsprelated.com /groups/speechcoding/show/666.php (671 words)

	wvBitstream (USC's Wavelet Library) (Site not responding. Last check: 2007-10-13)
		The size is not stored in the bitstream, since often the application already knows the size.
		When this is not the case, the application can store the size explicitly in conjunction with the bitstream.
		The process of creating a bitstream from a basis and then reconstructing a basis from that bitstream is completely lossless if the coefficients are integers.
	www.math.sc.edu /~sjohnson/wvlib/man_wvBitstream.html (203 words)

	Reasons to Open the Bitstream format (Site not responding. Last check: 2007-10-13)
		These tools tie in tightly with the bitstream generator parts to allow further optimization for speed or area.
		But innovations aren't vendor specific, and the choices for optimization that the vendors choose may not be the right choices for a particular design / device.
		There are uses for the bitstream that I haven't heard about yet, with the standard response of "That's impossible." For instance, have you ever created a 100m JTAG Cable?
	mknod.org /~mcrist/fpga/reasons.html (301 words)

	RFC 3533 - The Ogg Encapsulation Format Version 0. S. Pfeiffer. (Site not responding. Last check: 2007-10-13)
		RFC 3533 OGG May 2003 Please note that the term "packet" is not used in this document to signify entities for transport over a network.
		RFC 3533 OGG May 2003 header of each page of the physical bitstream.
		RFC 3533 OGG May 2003 (Ogg) segment: The Ogg encapsulation process splits each packet into chunks of 255 bytes plus a last fractional chunk of less than 255 bytes.
	rfc.sunsite.dk /rfc/rfc3533.html (3593 words)

	Macromedia Flash SWF File Format, Version 7
		Binary file format that delivers vector graphics (especially animations) and other data types, including "bitmapped" video, over the Internet to the Macromedia Flash Player.
		Potential challenges to the preservation of SWF files are discussed in Richard Entlich's article "Flash in the Pan or Around for the Long Haul?" The compilers of this document seek advice regarding preservation preferences: SWF, FLA, a projector version, or is it advisable to archive all three?
		Another option is the Screen Video Bitstream Format, optimized for "captures of computer screens in motion" (SWF specification, p.
	www.digitalpreservation.gov /formats/fdd/fdd000130.shtml (1046 words)

	Help In H.264 Bitstream File Format - 3ivx Discussion Forums
		I am developping an application to help users searching events in a H.264 video sequence.
		I need to understand the H.264 bitstream file format.
		Can anybody help me to find the AVC file format standard
	forums.3ivx.com /index.php?showtopic=84612 (196 words)

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