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	Appendix >> Online Help >> Bitrate
		Bitrate is defined as the number of data points used to approximate the true wave form.
		If the bitrate is low, the irrelevancy and redundancy criteria will be measured harshly, and more subtlety will be stripped out, resulting in a lower-quality product.
		If the bitrate is high, the codec will be applied with leniency, and the end result will sound better.
	www.avsmedia.com /OnlineHelp/AudioTools/Appendix/FileFormatSettings/Bitrate.aspx (257 words)

	Bitrate - Wikipedia, the free encyclopedia
		In digital multimedia, bitrate is the number of bits used per unit of time to represent a continuous medium such as audio or video.
		While often referred to as "speed", bitrate does not measure distance/time but quantity/time, and thus should be distinguished from the "propagation speed" (which depends on the transmission medium and has the usual physical meaning).
		When describing bitrates, binary prefixes are almost never used and SI prefixes are almost always used with the standard, decimal meanings, not the computer-oriented binary meanings.
	en.wikipedia.org /wiki/Bitrate (964 words)

	sampling rate bitrate
		Bitrate is a measure of the amount of data stored for every second of audio.
		Unfortunately, bitrate is much more difficult to visualize/explain since you're really measuring bits per second and not cycles or samples per second as we are with sampling rate.
		The concept of bitrate can be thought of as how much space is dedicated to simulate the original digital sound according to the psychoacoustic algorithm your CODEC is using.
	home.insightbb.com /~encodingheaven/audio/info/info5.htm (418 words)

	Definition of Bitrate
		Bitrate, as the name implies, describes the rate at which bits are transferred from one location to another.
		Bitrate is commonly measured in bits per second (bps), kilobits per second (Kbps), or megabits per second (Mbps).
		For example, a DSL connection may be able to download data at 768 kbps, while a Firewire 800 connection can transfer data up to 800 Mbps.
	www.sharpened.net /glossary/definition.php?bitrate (185 words)

	Definition List (Site not responding. Last check: 2007-10-17)
		Bitrate actually means how many bits (a small size of space on your computer) are taken up per second of music.
		Stands for Variable Bitrate and is a method of encoding audio to MP3 that allows for different sections of the file to be encoded at different bitrates, depending upon the demands of the song.
		Theoretically, it uses higher bitrates where the song needs it, and lower ones where the quality is not as important, but is still not very popular.
	www.mp3player.com /help/definitions/definitionslist.htm (770 words)

	Bitrate (Site not responding. Last check: 2007-10-17)
		For compressed files, instead of measuring bitdepth we measure the bitrate, or the number of bits used to store a second of sound.
		Bitrates are measured in thousands of bits per second (kbps), and as with resolution, the higher the bitrate, the better the sound.
		Here is a useful formula to calculate the size of a compressed audio file: size in megabytes = number of seconds x bitrate in kbps / 8,388.608 (the number of kilobits in a megabyte).
	pobox.upenn.edu /~griscom/da/node16.html (164 words)

	Variable Bitrate MP3 Encoding. Articles, reviews, history, about music formats (mp3, wma, wmv, midi) (Site not responding. Last check: 2007-10-17)
		Standard MP3 files are encoded at a single bitrate through the entire file (hence the CBR moniker).
		A song that begins quietly or with a single musical instrument will, during that section, be encoded at a lower bitrate then the middle of the song when all the instruments are playing together and the volume and frequency range is high.
		CBR is inefficient in that 10 seconds of silence encoded at 128kbps requires the same file size as 10 seconds of full-on opera.
	www.maniactools.com /articles/variable-bitrate-mp3-encoding.shtml (486 words)

	DVD-HQ : Bitrate & GOP calculator © Rui del-Negro 2005
		Note that for storage calculations (ex., disc size, bitrate), a gigabyte is usually considered to be equivalent to 1000 megabytes, whereas software normally considers that one gigabyte is equivalent to 1024 megabytes (the same is valid for megabytes and kilobytes).
		The average bitrate is calculated by dividing the free disc space (taking the audio into account) by the project length, leaving a small safety margin (typically between 2% and 5%) in case the encoder does not stick to the value, and to allow for normal file overhead.
		Note that (obviously), the minimum bitrate should always be less than the average bitrate, and the average bitrate should always be less than the maximum bitrate.
	dvd-hq.info /Calculator.html (1663 words)

	Bitrate - Hydrogenaudio Knowledgebase
		As another example, a "128 kbps VBR MP3" is usually a misnomer, since the point of VBR is to allow each of the MP3's internal frames to have its own bitrate.
		When people refer to the bitrate of a VBR MP3, they are usually referring to the actual average of bitrate of its frames.
		If the duration of the encoded audio is known, then "bitrate" might be the size of the file divided by its duration, which will be pretty close to the same number.
	wiki.hydrogenaudio.org /index.php?title=Bitrate (294 words)

	libvorbisenc - API Overview
		An 'average bitrate' request is used as the set-point in a long-range bitrate tracker which adjusts the encoder's aggressiveness up or down depending on whether or not frames are coming in larger or smaller than the requested average point.
		Average bitrate is tracked via a reservoir like minimum and maximum bitrate, however the averaging reservior does not impose a hard limit; it is used to nudge the bitrate toward the desired average by slowly adjusting the psychoacoustic aggressiveness.
		Using settings toward 0.0 causes the bitrate manager to hoard bits in the bit reservoir such that there is a large pool of banked surplus to draw upon during short spikes in bitrate.
	www.xiph.org /vorbis/doc/vorbisenc/overview.html (1870 words)

	[No title]
		"Bitrate" header and "bitrate" parameter definitions The bitrate parameter is used by a client to inquire bitrate range of media source.
		Bitrate header filed value MUST be one value of bitrate range of media source.
		If request of changing transport bitrate can be implemented by server, the private description of new transport bitrate SHOULD be appended into the PLAY response to report to the client unless there isn't necessary private description.
	www.cs.columbia.edu /sip/drafts/mmusic/draft-wei-mmusic-rtsp-bitrate-header-00.txt (1945 words)

	G4 - Feature - What Is Bitrate?
		Bitrate is the average number of bits that one second of audio data will consume.
		Standard MP3 bitrates are 64 Kbps (kilobits per second), 96 Kbps, 128 Kbps, and 160 Kbps.
		The higher the bitrate, the more times per second the original sound is sampled, thus yielding a more faithful reproduction and better sound.
	www.g4tv.com /techtvvault/features/26864/What_Is_Bitrate.html (215 words)

	Bitrate peeling - Wikipedia, the free encyclopedia
		Bitrate Peeling is a technique used in Ogg Vorbis audio encoded streams, wherein a stream can be encoded at one bitrate but can be served at that or any lower bitrate.
		Bitrate Peeling is similar in overall effect to Real Networks' technology called "SureStream", which basically creates a single media clip that contains multiple bitrates.
		As of 2005, Ogg Vorbis bitrate peeling exists only as a concept as there is not yet an encoder capable of producing peelable datastreams [1].
	en.wikipedia.org /wiki/Bitrate_peeling (631 words)

	bitrate.py Manual
		It prints the maximum bitrate for following sizes (in MB): 185, 247, 650, 700, 1300, and 1400 which are two kinds of mini-CD-Rs and the standard sizes for one or two 74 and 80 minute CD-Rs.
		A not so obvious use of the script is calculating the bitrate for a sound track if you already have the encoded video.
		You can of course re-encode the video with a slightly higher bitrate now, but if the space is less than about 10 MB this takes very long for just a tiny little quality gain which might not be visible at all.
	bj.spline.de /bitrate-man.html (1071 words)

	DFW - DirecTV HDTV Bitrate Monitor
		I'm very confident these numbers are accurate as I compared them to analysis of a recording of an OTA sample on DVHS and using TSReader Lite to analyze the resulting transport stream.
		If you are interested in the math behind computing the bitrates, I've detailed it in a blog entry.
		Bitrates appear to be much lower on Showtime HD and HDNet Movies, I'll keep some of the older measurements around for a while for comparison.
	www.widemovies.com /dfwbitrate.html (931 words)

	Digigami MegaPEG.X - MPEG-2 Encoder Mac Blog
		Those single bitrate numbers, and those numbers alone, exclusively govern the world of MPEG rate control, at least as it applies to ISO-11172 and ISO-13818 which are MPEG-1 and MPEG-2.
		If an encoder does bitrate control with average/peak, it is impossible to 'do the math' as it were and simply add two different elementary stream bitrates together to determine a combined bitrate.
		No, the bitrate for "The Mask" is 7.5 Mbs, and after the encoder discarded all the unneeded bits at that rate and padded the bitstream up to what would appear to be 4 Mbs, then we get to the average.
	www.digigami.com /megapeg/blog/2004/11/bitrate-control-in-new-megapegx.html (1000 words)

	A Bitrate Control Algorithm for the Berkeley MPEG-1 Video Encoder (Site not responding. Last check: 2007-10-17)
		We implemented the bitrate control algorithm described in the MPEG-2 standard and conducted a series of experiments to illustrate the effect of rate control.
		Quantization is the sole means of controlling the bitrate and, along with run-length coding, contributes most to the compression achieved by the MPEG algorithm.
		The model buffer is filled at a constant rate, given by the bitrate and emptied at regular intervals, corresponding to the frame rate.
	bmrc.berkeley.edu /research/publications/1997/144/dbrown.html (5778 words)

	Changing bitrate & resolution (Mode 0) - TiVo Community & Store
		When it happened to me it basically lied in the tvlog (said it was using the bitrate I had set, but didn't).
		As an aside, I was reluctant to up my bitrate in case I caused the mpeg chip to overheat, though for all I know it may be operating well within it's design limits.
		But, as rharnwel says, the higher the bitrate, the lower the amount of work required to compress it.
	www.tivocommunity.com /tivo-vb/showthread.php?threadid=128288 (2194 words)

	The essential byte on bitrates - Articles @ MP3Machine
		We define what a bitrate is and explain its importance to MP3 encoding and playback.
		Bitrate is the amount of information (bits) transferred in a second ('bps' is the abbreviation of bits-per-second).
		In terms of MP3 audio files, the bitrate unit is more commonly referred to as 'kbps', which is thousand-bits-per-second.
	www.mp3machine.com /news/549 (216 words)

	::. Bitrate Digital Internet Radio - The Best Mix On The Net! .:: (Site not responding. Last check: 2007-10-17)
		Thanks to the suggestions of some loyal Bitrate Digital supporters, we are considering purchasing promotional merchandise in the way of t-shirts, flyers, hats and the like.
		Bitrate Digital is currently begging the record companies to allow the station to get the latest music as soon as they come out for FREE through the MusicPoint service (radio stations only) (Read more)
		Listen in today, our stream can be reached by most popular media players, with 2 bitrates to cater for both broadband and dialup users.
	www.bitratedigital.com (274 words)

	What is it bitrate information?
		Bitrate information shows how many bits of information are transferred per second.
		Bitrates are always measuring in bits per seconds and in the most cases we can find their multiplied values, such as Kilobits, Megabits, Gigabits.
		Constant bitrate has the one for all mpeg frames bit transfer speed, in the case of VBR the bitrate of each mpeg audio frame could be different, and the encoding mp3 software defines what bitrate will be accordingly to the user preferences.
	beginwithsoftware.com /mp3-id3-v1-v2-tag-edit-sort/faq/what-is-media-files-bitrate.html (147 words)

	Burnworld - Video Encoding, Converting - TMPGenc Plus
		Bitrate means the number of bit which go through the stream per 1 sec.
		If the bitrate is same at any part on a single stream, it is called as CBR (Constant Bit Rate).
		Bitrate If bitrate is different, it will be outputted as VBR.
	www.burnworld.com /software/video/tmpgenc/index.htm (1416 words)

	wrong bitrate: 2-pass bug? - 3ivx Discussion Forums
		2 pass just analyzes the file in the first pass to decide what average quantizer is needed for the 2nd pass to meet the bitrate you asked for.
		If you do not have a specific bitrate, Single Pass CQ is the only encoder mode to use.
		If you ignore that and use one of the other 4 without entering a bitrate, the codec assigns an arbitrary (to you) default bitrate which has no bearing on the results you want.
	forums.3ivx.com /index.php?showtopic=81014 (854 words)

	MP3 Bitrate Converter: CDMaster32 is a fully functional MP3 Bitrate Converter
		MP3 Bitrate Converters are commonly used to reduce the bitrate of an MP3 file so that is becomes smaller and so more can fit on a portable MP3 player.
		As such, increasing the bitrate will not be able to add anything further to the file except wasted space.
		Failure to do so autoset the bitrate of each new MP3 file to the same bitrate as the old one; thereby defeating the purpose of this tutorial.
	zittware.com /Products/CDMaster32/Tutorials/mp3_bitrate_conversion.html (520 words)

	MP3 Producer Bitrate Comparisons - winamp bit rate mp3 mpeg3
		For [virtually] CD-quality compressed audio, you are offered to use bitrates of: 112kbit/s, 128kbit/s, 160kbit/s, 192kbit/s, and 256kbit/s.
		After that is where the differences between bitrates lie.
		No wonder this is regarded as the recommended bitrate for personal MP3 archival.
	www.fliptech.net /bitrate.shtml (481 words)

	MPEG Bitrate - how to set optimal bitrate
		A MPEG bitrate is not a linear function.
		For constant bitrate it is obvious that we should place it just after the elbow for the maximum quality.
		For VB (Variable bitrate) this is a bit different.
	www.mediachance.com /dvdlab/tutorial/bitrate.html (475 words)

	Live Bitrate and Framerate Pt.1 (Site not responding. Last check: 2007-10-17)
		The term ‘bitrate’ refers to the amount of data that can be transferred per second (generally measured in kilobits).
		Note: This is only a guideline, it is possible to broadcast at a bitrate closer to your maximum upload speed; however, doing so will greatly increase your buffering times and in-stream buffering.
		A viewer should have 1.5x the download capacity of the bitrate they are watching at*.
	www.netro.ca /Support/Learnmore/LiveorOnDemand/LiveStreamingOverview/LiveBitrateandFrameratePt1/tabid/204/Default.aspx (417 words)

	VfW VP3 Encoding Guide
		First, set your bitrate by dividing your desired bitrate by eight (so that it is in kilobytes [KB] rather than kilobits [kb]), then putting it in the 'Target data rate' box in the codec selection screen.
		Minimum Bitrate is not an 'official' VBR method, but it is similar to Automatic Bitrate (ABR).
		To do a Minimum Bitrate encode, follow the instructions for a CQ encode, but don't uncheck the 'Use target data rate' box.
	bloomd.home.mchsi.com /vp3 (631 words)

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