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MPEG-2 is used in Digital Video Broadcast and DVDs. The, TS, and, PS, are. MPEG-2 (a.k.a. H.222/H.262 as defined by the ) is a standard for 'the generic and associated audio information'. It describes a combination of and methods, which permit storage and transmission of movies using currently available storage media and transmission bandwidth.
While MPEG-2 is not as efficient as newer standards such as and, backwards compatibility with existing hardware and software means it is still widely used, for example in over-the-air broadcasting and in the standard. Contents. Main characteristics MPEG-2 is widely used as the format of signals that are broadcast by (over-the-air), and systems. It also specifies the format of movies and other programs that are distributed on and similar discs., DVD players, and other equipment are often designed to this standard. MPEG-2 was the second of several standards developed by the Moving Pictures Expert Group and is an international standard (/ 13818). Parts 1 and 2 of MPEG-2 were developed in a collaboration with, and they have a respective catalog number in the ITU-T Recommendation Series. While MPEG-2 is the core of most digital television and DVD formats, it does not completely specify them.
Regional institutions can adapt it to their needs by restricting and augmenting aspects of the standard. See also: and MPEG-2 includes a Systems section, part 1, that defines two distinct, but related,. One is the transport stream, a data packet format designed to transmit one data packet in four data packets for streaming digital video and audio over fixed or mobile transmission mediums, where the beginning and the end of the stream may not be identified, such as, and linear recording mediums, examples of which include /// broadcasting, and recording on tape. The other is the program stream, an extended version of the container format with less overhead than transport stream. Program stream is designed for random access storage mediums such as, and.
Transport stream file formats include, which is used on discs, on re-writable DVDs and on cards. Program stream files include on and on the short lived. The standard MPEG-2 transport stream contains packets of 188 bytes. M2TS prepends each packet with 4 bytes containing a 2-bit copy permission indicator and 30-bit timestamp. MPEG-2 Systems is formally known as ISO/IEC 13818-1 and as ITU-T Rec.
Authorized the ' Registration Authority, LLC' as the registration authority for MPEG-2 format identifiers. The registration descriptor of MPEG-2 transport is provided by ISO/IEC 13818-1 in order to enable users of the standard to unambiguously carry data when its format is not necessarily a recognized international standard. This provision will permit the MPEG-2 transport standard to carry all types of data while providing for a method of unambiguous identification of the characteristics of the underlying private data. Abc malayalam movies 2017.
Main article: The Video section, part 2 of MPEG-2, is similar to the previous standard, but also provides support for, the format used by analog broadcast TV systems. MPEG-2 video is not optimized for low, especially less than 1 Mbit/s at resolutions. All standards-compliant MPEG-2 Video decoders are fully capable of playing back MPEG-1 Video streams conforming to the Constrained Parameters Bitstream syntax.
MPEG-2/Video is formally known as ISO/IEC 13818-2 and as. With some enhancements, MPEG-2 Video and Systems are also used in some transmission systems, and is the standard format for over-the-air digital television.
Audio MPEG-2 introduces new audio encoding methods compared to MPEG-1: MPEG-2 Part 3. Main article: The MPEG-2 Audio section, defined in Part 3 (ISO/IEC 13818-3) of the standard, enhances 's audio by allowing the coding of audio programs with more than two, up to 5.1 multichannel. This method is backwards-compatible (also known as MPEG-2 BC ), allowing MPEG-1 audio decoders to decode the two main stereo components of the presentation. MPEG-2 part 3 also defined additional bit rates and sample rates for, and.
MPEG-2 BC (backward compatible with MPEG-1 audio formats). low bitrate encoding with halved sampling rate (MPEG-1 Layer // LSF - a.k.a. MPEG-2 LSF - 'Low Sampling Frequencies'). multichannel encoding with up to 5.1 channels, a.k.a.
MPEG-2 Part 7. Main article: Part 7 (ISO/IEC 13818-7) of the MPEG-2 standard specifies a rather different, non-backwards-compatible audio format (also known as MPEG-2 NBC ). Part 7 is referred to as MPEG-2.
Is more efficient than the previous MPEG audio standards, and is in some ways less complicated than its predecessor, MPEG-1 Audio, Layer 3, in that it does not have the hybrid filter bank. It supports from 1 to 48 channels at sampling rates of 8 to 96 kHz, with multichannel, multilingual, and multiprogram capabilities. Advanced Audio is also defined in Part 3 of the standard. MPEG-2 NBC (Non-Backward Compatible).
multichannel encoding with up to 48 channels ISO/IEC 13818 MPEG-2 standards are published as parts of ISO/IEC 13818. Each part covers a certain aspect of the whole specification. Part 1 Systems – describes synchronization and multiplexing of video and audio.
(It is also known as ITU-T Rec. Part 2 Video – for interlaced and non-interlaced video signals (Also known as ITU-T Rec. Part 3 Audio – for perceptual coding of audio signals. A multichannel-enabled extension and extension of bit rates and sample rates for MPEG-1 Audio Layer I, II and III of MPEG-1 audio. Part 4 Describes procedures for testing compliance. Part 5 Describes systems for Software simulation.
Part 6 Describes extensions for (Digital Storage Media Command and Control). Part 7 (AAC). Part 8 10-bit video extension. Primary application was studio video, allowing artifact-free processing without giving up compression. Part 8 has been withdrawn due to lack of interest by industry. Part 9 Extension for real time interfaces. Part 10 Conformance extensions for DSM-CC.
Part 11 Intellectual property management (IPMP) MPEG-2 Parts Part Number First public release date (First edition) Latest public release date (edition) Latest amend- ment Identical ITU-T Rec. Title Description Part 1 1996 2015 2016 Systems 1996 2013 Video 1995 1998 Audio MPEG-2 BC - backwards compatible with MPEG-1 Audio Part 4 1998 2004 2009 Conformance testing Part 5 1997 2005 Software simulation Part 6 1998 1998 2001 Extensions for DSM-CC extensions for Digital Storage Media Command and Control 1997 2006 2007 Advanced Audio Coding (AAC) MPEG-2 NBC Audio - Non-Backwards Compatible with MPEG-1 Audio Part 8 dropped 10-Bit Video The work began in 1995, but was terminated in 2007 because of low industry interest. Part 9 1996 1996 Extension for real time interface for systems decoders Part 10 1999 1999 Conformance extensions for Digital Storage Media Command and Control (DSM-CC) Part 11 2004 2004 IPMP on MPEG-2 systems Intellectual Property Management and Protection on the MPEG-2 system (XML IPMP messages are also defined in ISO/IEC 23001-3 ) History MPEG-2 evolved out of the shortcomings of MPEG-1. MPEG-1's known weaknesses:. An audio compression system limited to two channels (stereo).
No standardized support for interlaced video with poor compression when used for interlaced video. Only one standardized 'profile' (Constrained Parameters Bitstream), which was unsuited for higher resolution video. MPEG-1 could support 4k video but there was no easy way to encode video for higher resolutions, and identify hardware capable of supporting it, as the limitations of such hardware were not defined. Support for only one, 4:2:0. Sakae Okubo of was also the coordinator for developing the video coding standard and the requirements chairman in for the MPEG-2 set of standards. By using a pattern of REPEATFIRSTFIELD flags on the headers of encoded pictures, pictures can be displayed for either two or three fields and almost any picture display rate (minimum ⅔ of the frame rate) can be achieved. This is most often used to display 23.976 (approximately film rate) video on NTSC.
See for more information on how this works. Audio + video bitrate. Video peak 9.8 Mbit/s. Total peak 10.08 Mbit/s.
Minimum 300 kbit/s. Additional subtitles possible. (NTSC only). Audio.
(LPCM): 48 kHz or 96 kHz; 16- or 24-bit; up to six channels (not all combinations possible due to bitrate constraints). MPEG Layer 2 (MP2): 48 kHz, up to 5.1 channels (required in PAL players only). (DD, also known as AC-3): 48 kHz, 32–448 kbit/s, up to 5.1 channels. (DTS): 754 kbit/s or 1510 kbit/s (not required for DVD player compliance).
NTSC DVDs must contain at least one LPCM or Dolby Digital audio track. PAL DVDs must contain at least one MPEG Layer 2, LPCM, or Dolby Digital audio track. Players are not required to play back audio with more than two channels, but must be able to multichannel audio to two channels. GOP structure (Group Of Pictures).
Sequence header must be present at the beginning of every GOP. Maximum frames per GOP: 18 (NTSC) / 15 (PAL), i.e. 0.6 seconds both.
Closed GOP required for multi-angle DVDs HDV. Main article: XDCAM is a professional file-based video recording format. DVB Application-specific restrictions on MPEG-2 video in the standard: Allowed resolutions for:. 720, 640, 544, 528, 480 or 352 × 480 pixel, 24/1.001, 24, 30/1.001 or 30 frame/s. 352 × 240 pixel, 24/1.001, 24, 30/1.001 or 30 frame/s. 720, 704, 544, 528, 480 or 352 × 576 pixel, 25 frame/s. 352 × 288 pixel, 25 frame/s For HDTV:.
720 x 576 x 50 frame/s progressive (576p50). 1280 x 720 x 25 or 50 frame/s progressive (720p50).
1440 or 1920 x 1080 x 25 frame/s progressive (1080p25 = film mode). 1440 or 1920 x 1080 x 25 frame/s interlace (1080i50) ATSC. Main article: The ATSC A/53 standard used in the United States, uses MPEG-2 video at the Main Profile @ High Level (MP@HL), with additional restrictions such as the maximum bitrate of 19.39 Mbit/s for broadcast television and 38.8 Mbit/s for cable television, 4:2:0 format, and mandatory colorimetry information. ATSC allows the following video resolutions, aspect ratios, and frame/field rates:.
1920 × 1080 pixel (16:9, square pixels), at 30p, 29.97p, 24p, 23.976p, 60i, 59.94i. 1280 × 720 pixel (16:9, square pixels), at 60p, 59.94p, 30p, 29.97p, 24p, or 23.976p.
704 × 480 pixel (4:3 or 16:9, non-square pixels), at 60p, 59.94p, 30p, 29.97p, 24p, 23.976p, 60i, or 59.94i. 640 × 480 pixel (4:3, square pixels), at 60p, 59.94p, 30p, 29.97p, 24p, 23.976p, 60i, or 59.94i ATSC standard A/63 defines additional resolutions and aspect rates for 50 Hz (PAL) signal. The ATSC specification and MPEG-2 allow the use of progressive frames, even within an interlaced video sequence. For example, a station that transmits 1080i60 video sequence can use a coding method where those 60 fields are coded with 24 progressive frames and metadata instructs the decoder to interlace them and perform 3:2 pulldown before display. This allows broadcasters to switch between 60 Hz interlaced (news, soap operas) and 24 Hz progressive (prime-time) content without ending the MPEG-2 sequence and introducing a several seconds of delay as the TV switches formats.
This is the reason why 1080p30 and 1080p24 sequences allowed by the ATSC specification are not used in practice. The 1080-line formats are encoded with 1920 × 1088 pixel luma matrices and 960 × 540 chroma matrices, but the last 8 lines are discarded by the MPEG-2 decoding and display process. ATSC A/72 is the newest revision of ATSC standards for digital television, which allows the use of H.264/AVC video coding format and 1080p60 signal.
MPEG-2 audio was a contender for the ATSC standard during the ' shootout, but lost out to. ISDB-T Technical features of MPEG-2 in ATSC are also valid for, except that in the main TS has aggregated a second program for mobile devices compressed in H.264 AVC for video and -LC for audio, mainly known as.
Parts of this article (those related to this section) need to be updated. Please update this article to reflect recent events or newly available information. Last update: 2012 (June 2016) All MPEG-2 patents is officially expired and can be used freely., a private patent licensing organization, has acquired rights from over 20 corporations and one university to license a of approximately 640 worldwide, which it claims are the 'essential' to use of MPEG-2 technology, although many of the patents have since expired. Where is upheld, the use of MPEG-2 requires the payment of licensing fees to the patent holders. Other patents are licensed. The development of the standard itself took less time than the patent negotiations. Patent pooling between essential and peripheral patent holders in the MPEG-2 pool is the subject of a study by the University of Wisconsin.
Over half of the patents expired in 2012. According to the MPEG-2 licensing agreement any use of MPEG-2 technology is subject to. MPEG-2 encoders are subject to a royalty of $2.00 per unit, decoders are subject to a royalty of $2.00 per unit, and royalty-based sales of encoders and decoders are subject to different rules and $2.50 per unit. Also, any packaged medium (DVDs/Data Streams) is subject to licence fees according to length of recording/broadcast. A criticism of the MPEG-2 patent pool is that even though the number of patents will decrease from 1,048 to 416 by June 2013 the license fee has not decreased with the expiration rate of MPEG-2 patents. Since January 1, 2010, the MPEG-2 patent pool has remained at $2 for a decoding license and $2 for an encoding license. By 2015 more than 90% of the MPEG-2 patents will have expired but as long as there are one or more active patents in the MPEG-2 patent pool in either the country of manufacture or the country of sale the MPEG-2 license agreement requires that licensees pay a license fee that does not change based on the number of patents that have expired.
Patents (U.S. From the original on 20 May 2007. Retrieved 4 May 2018. From the original on 2012-09-03. Retrieved 2010-06-03. ITU-T (May 2006). Archived from on 2011-05-19.
Retrieved 2010-06-03. 2010-01-28 at the. Retrieved on 2009-07-06. ITU-T Website.
International Telecommunication Union - Telecommunication Standardization Sector. February 2000.
From the original on 2012-08-22. Retrieved 2009-08-13. Purnhagen, and the MPEG Audio Subgroup (October 1998). From the original on 2011-08-07. Retrieved 2009-10-31. CS1 maint: Multiple names: authors list.
^ ISO (October 1998). From the original on 2010-02-18.
Retrieved 2009-10-28. ^ MPEG.ORG.
From the original on 2007-08-31. Retrieved 2009-10-28. ^ ISO (2006-01-15), (PDF), (PDF) from the original on 2009-03-06, retrieved 2009-10-28.
ISO (2004-10-15), (PDF), archived from (PDF) on 2011-07-13, retrieved 2009-10-19. ^ Werner Oomen; Leon van de Kerkhof. From the original on 2010-04-30. Retrieved 2009-12-29. Predrag Supurovic, 2015-02-08 at the., Retrieved on 2009-07-11. ISO (March 1996). Archived from on 2010-04-08.
Retrieved 2009-10-28. From the original on 2014-07-21. Retrieved 2014-07-24. From the original on 2017-08-30. Retrieved 2017-08-30.
From the original on 2017-08-30. Retrieved 2017-08-30.
From the original on 2017-08-30. Retrieved 2017-08-30. From the original on 2017-08-30.
Codec: Mpeg Audio Layer 1/2/3 (mpga)
Retrieved 2017-08-30. MPEG (1997-02-21). From the original on 2010-05-11. Retrieved 2010-08-01. IEEE (1996). From the original on 2010-05-20.
Retrieved 2010-08-01. From the original on 2017-08-30. Retrieved 2017-08-30. chiariglione.org (2010-02-04). Archived from on 2011-11-01. Retrieved 2010-02-09. Van der Meer, Jan (2014).
From the original on 2010-04-30. Retrieved 2010-08-01. (PPT), from the original on 16 July 2012, retrieved 2010-08-01. ISO. From the original on 2017-08-30. Retrieved 2009-10-29. From the original on 2005-03-02.
Codec Mpeg Audio Layer 1/2/3
Retrieved 2017-01-27. From the original on 26 December 2017. Retrieved 4 May 2018. 2008-06-05 at the. 18 March 2004. Archived from on 18 March 2004. Retrieved 4 May 2018.
Archived from on 2013-01-02. From the original on 2012-12-24. 2008-05-28 at the. Quint, Dan; Amit Gandhi.
Working Paper. From the original on 2010-07-10. Retrieved 2009-10-11. From the original on 2012-09-24. From the original on 2013-05-30.
Retrieved 2013-05-19. From the original on 2014-08-20. Retrieved 2013-06-06. ^ Steve Pociask (2013-05-13). From the original on 2013-07-21. Retrieved 2013-05-19. ^ Bret Swanson (2013-04-30).
From the original on 2013-04-30. Retrieved 2013-05-19. ^ Steve Forbes (2013-03-18). From the original on 2013-06-16.
Retrieved 2013-06-05. Richard Chirgwin (15 February 2018). The Register. From the original on 15 February 2018. External links. (figures are lost).
– Slides from lectures on video compression at MIT. – MPEG-2 at the ISO Store. A list of MPEG reference books. Recommended Practice: Guide to the Use of the ATSC Digital Television Standard, including Corrigendum No.
Some filename extensions such as MOV, AVI, MXF, and FLV denote container file formats rather than representing specific audio, video, or image data formats. Container files can contain data encoded using various compression and encoding schemes. Adobe Media Encoder can import these container files, but the ability to import the data that they contain depends on which codecs (specifically, decoders) are installed. By installing more codecs, you can extend the ability of Adobe Media Encoder to import extra file types. Many codecs must be installed into the operating system and work as a component inside the QuickTime or Video for Windows formats. Contact the manufacturer of your hardware or software for more information about codecs that work with the files that your specific devices or applications create.
Format Description 3GP 3GPP file format AAF Advanced Authoring Format ARCUTX Adobe rough cut format. This format is supported only when queued from Prelude, and cannot be imported directly.
Animated GIF (GIF) Supported on Windows only ARI ARIRAW format AVC-Intra, AVC-Intra LT, AVC Long GOP (Op1a), AVC Long GOP (Op1b) including AVC-Ultra Panasonic codecs Cinema DNG High-resolution raw format RMF Canon RAW format DV Stream Native video format used for tape DNxHD Op1a Supported in MXF container DNxHR Supported in MXF container FLV, F4V. Flash video MOV GoPro CineForm format HEVC High Efficiency Video Coding. HEVC (also known as H.265) codec footage in a QuickTime (.MOV) container, such as produced by an iPhone or iPad with iOS 11 or a DJI Phantom 4 drone. VFR support. HEVC Hardware Encode (Feature available on Mac OSX 10.13 and later) IMX Supported in MXF container JPEG2000 MXF Op1a Supported in MXF container MXF Media eXchange Format. Supports MXF wrapped DV (DALET). Note: Adobe Media Encoder supports ARRIRAW files in an MXF container. MPEG, MPE, MPG, M2V, MPA, MP2, M2A, MPV, M2P, M2T, MTS, MP4, M4V, M4A, VOB, 3GP, AVC, h.264 MPEG-1 (Audio Layer II), MPEG-2, and MPEG-4 formats. Variable Frame Rate (VFR) support in h.264. Mac H.264 (Feature available on Mac OSX 10.13 and later).
Win-Intel H.264 Hardware Encode. MXF OP1a Supported in MXF container Netshow ASF Windows only P2 Movie Supported in MXF container CINE Phantom CINE format MOV QuickTime movie. HEVC (also known as H.265) codec footage in a QuickTime (.MOV) container. R3D RED Raw, RED Helium, RED WEAPON SonyRAW Supported in MXF container AVI, WAV, BWF Video for Windows and Mac OS(requries QuickTime player) WMV, WMA, ASF Windows Media XAVC Intra, XAVC Long GOP Sony codecs. Note:. FLV and F4V formats are container formats that are associated with a set of video and audio formats.
F4V files generally contain video data that is encoded using an H.264 video codec and the AAC audio codec. FLV files generally contain video data that is encoded using the On2 VP6 or Sorenson Spark codec and audio data encoded using an MP3 audio codec. Adobe Media Encoder, however, can import FLV files using the On2 VP6 video codec, not the Sorenson Spark codec. Also, Premiere Pro does not support FLV import. Media eXchange Format (MXF) is a container format. Adobe Media Encoder can only import some kinds of data contained within MXF files. It can import the Op-Atom variety used by Panasonic cameras using the DV, DVCPRO, DVCPRO50, DVCPRO HD, and AVC-Intra codecs to record to Panasonic P2 media.
Adobe Media Encoder can also import XDCAM HD files in MXF format. Several formats associated with specific modern cameras use MPEG-4 encoding.
For example, the XDCAM EX format uses MP4 files, and the AVCHD format uses MTS files.
Importing MPEG files with AC3 Audio into Adobe Premiere When importing mpeg files into Adobe Premiere, you may find the audio missing. This happens when the mpeg file uses the AC3 audio codec which Premiere Pro doesn't recognize.
This problem is very common with digital camcorders that record mpg files. There are two solutions.
(1) Transcode the files to a better format Many programs do recognize the AC3 format, for example, Sony Vegas, Adobe Premiere Elements, and various encoding utilities. If you happen to have any of these applications installed, import the files into the application and export them in a more standard format such as. The new files can then be imported into Premiere Pro. (2) Add an AC3 decoder to Premiere Pro Disclaimer: This is the easiest option but it comes with no guarantees. It is not an official solution, it is a hack that I discovered somewhere on the net.
It works beautifully for me but your mileage may vary. Download the file below and save it in your Premiere Pro main directory (e.g. C: Program Files Adobe Adobe Premiere Pro CS3 ). If Premiere Pro is running you'll need to close it, save the file and then restart Premiere Pro.
That's it—Premiere Pro should now be able to import and use the mpg files normally. (Right-click the link and select Save As.) Notes:. This is a Windows dll file. It is small (53KB) and benign, not a dangerous type of file at all.
If anything goes wrong, simply delete it. If you have Adobe Encore installed, you can find this same file in the Encore directory (e.g. C: Program Files Adobe Adobe Encore CS3 ). This only works with files that are imported after adding the dll file. In other words, any troublesome files that were imported into your project before adding the dll file will need to be re-imported to fix the audio.
This article includes a, but its sources remain unclear because it has insufficient. Please help to this article by more precise citations. (December 2016) MPEG-1 or MPEG-2 Audio Layer 2.mp2 audio/mpeg, audio/MPA Initial release 1993; 25 years ago ( 1993) Type of format Audio compression format, Contained by, Website MPEG-1 Audio Layer II or MPEG-2 Audio Layer II ( MP2, sometimes incorrectly called Musicam or MUSICAM) is a defined by ISO/IEC 11172-3 alongside and (MP3). While is much more popular for and applications, MP2 remains a dominant standard for audio broadcasting. See also:. MP2 is a, which means that compression takes place in the with a low-delay filter bank producing 32 frequency domain components. By comparison, MP3 is a with hybrid filter bank, which means that compression takes place in the after a hybrid (double) transformation from the time domain.
MPEG Audio Layer II is the core algorithm of the MP3 standards. All psychoacoustical characteristics and frame format structures of the MP3 format are derived from the basic MP2 algorithm and format. The MP2 encoder may exploit inter channel redundancies using optional 'joint stereo'. Like MP3, MP2 is a perceptual coding format, which means that it removes information that the human auditory system will not be able to easily perceive. To choose which information to remove, the audio signal is analyzed according to a psychoacoustic model, which takes into account the parameters of the human auditory system. Research into has shown that if there is a strong signal on a certain frequency, then weaker signals at frequencies close to the strong signal's frequency cannot be perceived by the human auditory system.
This is called frequency masking. Perceptual audio codecs take advantage of this frequency masking by ignoring information at frequencies that are deemed to be imperceptible, thus allowing more data to be allocated to the reproduction of perceptible frequencies. MP2 splits the input audio signal into 32 sub-bands, and if the audio in a sub-band is deemed to be imperceptible then that sub-band is not transmitted. MP3, on the other hand, transforms the input audio signal to the frequency domain in 576 frequency components.
Therefore, MP3 has a higher frequency resolution than MP2, which allows the psychoacoustic model to be applied more selectively than for MP2. So MP3 has greater scope to reduce the bit rate. The use of an additional tool, and higher frequency accuracy (due to the larger number of frequency sub-bands used by MP3) explains why MP3 does not need as high a bit rate as MP2 to get an acceptable audio quality. Conversely, MP2 shows a better behavior than MP3 in the time domain, due to its lower frequency resolution. This implies less codec time delay — which can make editing audio simpler — as well as 'ruggedness' and resistance to errors which may occur during the digital recording process, or during transmission errors.
The MP2 sub-band filter bank also provides an inherent ' concealment' feature, due to the specific temporal masking effect of its mother filter. This unique characteristic of the MPEG-1 Audio family implies a very good sound quality on audio signals with rapid energy changes, such as percussive sounds. Because both the MP2 and MP3 formats use the same basic sub-band filter bank, both benefit from this characteristic. Applications of MP2 Part of the and standards.
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Layer II is commonly used within the broadcast industry for distributing live audio over satellite, ISDN and IP Network connections as well as for storage of audio in digital playout systems. An example is 's programming distribution system. The Content Depot distributes MPEG-1 L2 audio in a Broadcast Wave File wrapper. MPEG2 with RIFF headers (used in.wav) is specified in the RIFF/WAV standards. As a result, Windows Media Player will directly play Content Depot files, however, less intelligent.wav players often do not. As the encoding and decoding process would have been a significant drain on CPU resources in the first generations of broadcast playout systems, professional broadcast playout systems typically implement the codec in hardware, such as by delegating the task of encoding and decoding to a compatible soundcard rather than the system CPU.
All players in countries contain stereo MP2 decoders, making MP2 a possible competitor to in these markets. DVD-Video players in countries are not required to decode MP2 audio, although most do. While some store audio in MP2 and many consumer-authored DVDs use the format, commercial DVDs with MP2 soundtracks are rare. MPEG-1 layer 2 is the standard audio format used in the and formats (VCD and SVCD also support variable bit rate and as added by MPEG-2).
MPEG 1 layer 2 is the standard audio format used in the standard for set-top boxes. MPEG 1 layer 2 is the audio format used in camcorders. MP2 files are compatible with some.
Naming and extensions The term MP2 and.mp2 usually refer MPEG-1 Audio Layer II data, but can also refer to MPEG-2 Audio Layer II, a mostly backward compatible extension which adds support for, encoding, and additional sampling rates, defined in ISO/IEC 13818-3. The abbreviation MP2 is also sometimes erroneously applied to video or MPEG-2 audio. See also. originally MP2-based, with numerous improvements Notes.
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