MPEG-1 is the designation for a group of audio and video coding standards agreed upon by MPEG (Moving Pictures Experts Group). MPEG-1 video is used by the Video CD format. The output quality at usual VCD bitrates is roughly that of a video cassette recorder. MPEG-1 audio layer 3 is the full name for the popular audio format MP3. MPEG-1 consists of several "parts", as follows: #Synchronization and multiplexing of video and audio. #Compression codec for non-interlaced video signals. #Compression codec for perceptual coding of audio signals. The standard defines three "layers," or levels of complexity, of MPEG audio coding. ## MP1 or MPEG-1 Part 3 Layer 1 (MPEG-1 Audio Layer 1) ## MP2 or MPEG-1 Part 3 Layer 2 (MPEG-1 Audio Layer 2) ## MP3 or MPEG-1 Part 3 Layer 3 (MPEG-1 Audio Layer 3) #Procedures for testing conformance. #Reference software. Reference: [http://www.chiariglione.org/mpeg/standards/mpeg-1/mpeg-1.htm ISO/IEC JTC1/SC29/WG11] (June 1996) ===See also=== * JPEG * JBIG * MPEG-2 * MPEG-3 * MPEG-4 * MPEG-7 * MPEG-21 * Advanced Audio Coding Audio codecs Video codecs
==Phases and Parts and Layers== This is actually not all true, as far as I know. The 1 and the 2 in MPEG stands for the Phase it usually deals with, it's not "MPEG-1 Audio Layer 3", it's "MPEG Phase 1 Layer 3". You should ask the inventors, but as of this day, the software deals with the phases on that level (see MP3 discussion page). :Response: No, I'm afraid not. Refer to the official MPEG sites and their terminology - e.g., [http://www.chiariglione.org/mpeg/ the MPEG official site] and [http://www.mpegif.org/ the MPEG Industry Forum site]. For example, MPEG-21 is not the 21st "phase" of MPEG work. The suffix is just an identifier for a set of standardized technologies that are associated in some way (in particular, it identifies those Parts sharing the same ISO/IEC standard number, which in the case of MPEG-1 is 11172 and in the case of MPEG-2 is 13818). And sometimes multiple phases of work are found within one MPEG suite (e.g., the two distinct generations of audio codec designs within MPEG-2). And if you say MPEG-1 Layer 3, you're leaving out the Part number that tells you where to look for the Layer number, because Layer 3 is something defined only within Part 3. You have to either say "Audio" or "Part 3" (which are synonymous terms in MPEG-1 and MPEG-2) to indicate which part you're referring to. When you say "the software", I don't know what software you are referring to. Are you referring to the software found in MPEG-1 Part 5? User:Pangolin 08:30, 12 Mar 2005 (UTC)
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Words begining with MPEG-1:
MPEG-1
MPEG-1
MPEG-1_Audio_Layer_3
MPEG-1
MPEG-1 is the designation for a group of audio and video coding standards agreed upon by MPEG (Moving Pictures Experts Group). MPEG-1 video is used by the Video CD format. The output quality at usual VCD bitrates is roughly that of a video cassette recorder. MPEG-1 audio layer 3 is the full name for the popular audio format MP3. MPEG-1 consists of several "parts", as follows: #Synchronization and multiplexing of video and audio. #Compression codec for non-interlaced video signals. #Compression codec for perceptual coding of audio signals. The standard defines three "layers," or levels of complexity, of MPEG audio coding. ## MP1 or MPEG-1 Part 3 Layer 1 (MPEG-1 Audio Layer 1) ## MP2 or MPEG-1 Part 3 Layer 2 (MPEG-1 Audio Layer 2) ## MP3 or MPEG-1 Part 3 Layer 3 (MPEG-1 Audio Layer 3) #Procedures for testing conformance. #Reference software. Reference: [http://www.chiariglione.org/mpeg/standards/mpeg-1/mpeg-1.htm ISO/IEC JTC1/SC29/WG11] (June 1996) ===See also=== * JPEG * JBIG * MPEG-2 * MPEG-3 * MPEG-4 * MPEG-7 * MPEG-21 * Advanced Audio Coding Audio codecs Video codecs
MPEG-1
==Phases and Parts and Layers== This is actually not all true, as far as I know. The 1 and the 2 in MPEG stands for the Phase it usually deals with, it's not "MPEG-1 Audio Layer 3", it's "MPEG Phase 1 Layer 3". You should ask the inventors, but as of this day, the software deals with the phases on that level (see MP3 discussion page). :Response: No, I'm afraid not. Refer to the official MPEG sites and their terminology - e.g., [http://www.chiariglione.org/mpeg/ the MPEG official site] and [http://www.mpegif.org/ the MPEG Industry Forum site]. For example, MPEG-21 is not the 21st "phase" of MPEG work. The suffix is just an identifier for a set of standardized technologies that are associated in some way (in particular, it identifies those Parts sharing the same ISO/IEC standard number, which in the case of MPEG-1 is 11172 and in the case of MPEG-2 is 13818). And sometimes multiple phases of work are found within one MPEG suite (e.g., the two distinct generations of audio codec designs within MPEG-2). And if you say MPEG-1 Layer 3, you're leaving out the Part number that tells you where to look for the Layer number, because Layer 3 is something defined only within Part 3. You have to either say "Audio" or "Part 3" (which are synonymous terms in MPEG-1 and MPEG-2) to indicate which part you're referring to. When you say "the software", I don't know what software you are referring to. Are you referring to the software found in MPEG-1 Part 5? User:Pangolin 08:30, 12 Mar 2005 (UTC)
See other meanings of words starting from letter:
M
MA | MB | MC | MD | ME | MF | MG | MH | MI | MJ | MK | ML | MN | MO | MP | MR | MS | MT | MU | MW | MX | MY | MZ |Words begining with MPEG-1:
MPEG-1
MPEG-1
MPEG-1_Audio_Layer_3
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