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MP3 (formally MPEG-1 Audio Layer III or MPEG-2 Audio Layer III) [4] is a coding format for digital audio developed largely by the Fraunhofer Society in Germany under the lead of Karlheinz Brandenburg, [11][12] with support from other digital scientists in other countries.
ISO/IEC MPEG Audio Committee 1991-12-06 ISO/IEC 11172-3, ISO/IEC 13818-3 Free ? FFmpeg (decoding only) - Yes No No Expired No MP2 (MPEG-1, 2 Audio Layer II) ISO/IEC MPEG Audio Committee 1993 ISO/IEC 11172-3, ISO/IEC 13818-3 Free [24] various DVD software, video software, audio software TooLAME (encoding only), TwoLAME (encoding only), FFmpeg
Advanced Audio Coding is designed to be the successor of the MPEG-1 Audio Layer 3, known as MP3 format, which was specified by ISO / IEC in 11172-3 (MPEG-1 Audio) and 13818-3 (MPEG-2 Audio). Blind tests in the late 1990s showed that AAC demonstrated greater sound quality and transparency than MP3 for files coded at the same bit rate.
Fraunhofer FDK AAC – Lossy compression (AAC) FFmpeg codecs in the libavcodec library, e.g. AC-3, AAC, ADPCM, PCM, Apple Lossless, FLAC, WMA, Vorbis, MP2, etc. FAAD2 – open-source decoder for Advanced Audio Coding. There is also FAAC, the same project's encoder, but it is proprietary (but still free of charge).
MPEG logo Some well known older (up to 2005) digital media formats and the MPEG standards they use. The Moving Picture Experts Group (MPEG) is an alliance of working groups established jointly by ISO and IEC that sets standards for media coding, including compression coding of audio, video, graphics, and genomic data; and transmission and file formats for various applications. [1]
MPEG-2 Part 3 also defines additional bit rates and sampling rates for MPEG-1 Audio Layers I, II, and III. [12] This extension is known as MPEG-2 LSF (low sampling frequencies), since the new sampling rates are one-half multiples (16, 22.05 and 24 kHz) of the sampling rates defined in MPEG-1 (32, 44.1 and 48 kHz).
MPEG transport stream (MPEG -TS, MTS) or simply transport stream (TS) is a standard digital container format for transmission and storage of audio, video, and Program and System Information Protocol (PSIP) data. [6] It is used in broadcast systems such as DVB, ATSC and IPTV.
MPEG-2 Part 3. Part 3 of the MPEG-2 standard (formally known as ISO/IEC 13818-3, also known as MPEG-2 Audio or MPEG-2 BC) defines audio coding: MPEG Multichannel - It enhances MPEG-1 's audio by allowing the coding of audio programs with more than two channels, up to 5.1 multichannel. This method is backwards-compatible (also known as MPEG-2 BC ...
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