MPEG-4 Part 14 | MPEG-4 Part 14 Guide, A to Z information, MPEG-4 Part 14 tutorial
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MP4- (MPEG-4 Part 14)
- Filename extension - .mp4+
- Internet media type video/mp4+
- Type code -mpg4
Sound just MP4-( MPEG-4 Part 14)
Filename extension - .m4a
Sound just - MP4 (Apple iPhone)
Filename extension .m4r
Secured AAC MP4
Filename extension .m4p
Bookmarked sound just MP4
Filename extension .m4b
MP4 stream
Filename extension.m4vFile designs category - v • e edit
MPEG-4 Part 14 (MP4), formally ISO/IEC 14496-14:2003, is an interactive media compartment design standard determined as a piece of MPEG-4. It is most regularly used to store advanced sound and computerized video transfers, particularly those characterized by MPEG, however can likewise be utilized to store other information, for example, captions and still pictures. Like most present day compartment designs, MPEG-4 Part 14 permits real time over the Internet.
Principle article: Wikipedia:MP4 player
A few gadgets publicized as MP4 Players are not fit for playing MP4 documents.
History of MP4 (MPEG-4 Part 14 - Format
)
MPEG-4 Part 14 depends on ISO/IEC 14496-12:2005 which is straightforwardly founded on Apple's QuickTime film compartment design (.mov).[1] MPEG-4 Part 14 is basically indistinguishable from the MOV design, however officially determines uphold for Initial Object Descriptors (IOD) and other MPEG features.[2]
.MP4 versus .M4A document augmentations
The presence of two distinctive record expansions for naming sound just MP4 documents has been a wellspring of disarray among clients and interactive media playback programming. Since MPEG-4 Part 14 is a compartment design, MPEG-4 documents may contain quite a few sound, video, and even caption transfers, making it difficult to decide the sort of streams in a MPEG-4 record dependent on its filename expansion alone. Accordingly, Apple Inc. begun utilizing and advocating the .m4a file augmentation. Programming equipped for sound/video playback ought to perceive records with either .m4a or .mp4 document expansions, as would be normal, as there are no record design contrasts between the two. Most programming fit for making MPEG-4 sound will permit the client to pick the filename augmentation of the made MPEG-4 records.
While the solitary authority document expansion characterized by the standard is .mp4, different record augmentations are generally used to show planned substance:
MPEG-4 records with sound and video for the most part utilize the norm .mp4 augmentation.
Sound just MPEG-4 documents for the most part have a .m4a extension. This is particularly valid for non-ensured content.
MPEG-4 documents with sound streams scrambled by FairPlay Digital rights the executives as sold through the iTunes Store use the .m4p extension.
Book recording and webcast documents, which additionally contain metadata including section markers, pictures, and hyperlinks, can utilize the extension .m4a, yet more ordinarily use the .m4b extension. An .m4a audio document can't "bookmark" (recall the last listening spot), whereas .m4b extension records can.
The Apple iPhone utilizes MPEG-4 sound for its ringtones however utilizes the .m4r extension instead of the .m4a extension.
Crude MPEG-4 Visual bitstreams are named .m4v.
The regular yet non-standard utilization of the extensions .m4a and .m4v is because of the prominence of Apple's iPod, iPhone, and iTunes Store, and Microsoft's Xbox 360 and Zune. Without mods, Sony's PSP can likewise play M4A. M4A for the most part conveys preferred sound quality over the more seasoned MP3 design at a similar piece rate.
Information streams (MPEG-4 Part 14 - Format
)
- Practically any sort of information can be inserted in MPEG-4 Part 14 documents through private streams; the broadly upheld codecs and extra information streams are:
- Video: MPEG-4 Part 10 (or H.264, otherwise called MPEG-4 AVC), MPEG-4 Part 2, MPEG-2, and MPEG-1.
- Sound: AAC (otherwise called MPEG-2 Part 7), Apple Lossless, MP3 (also known as MPEG-1 Audio Layer 3), MPEG-4 Part 3, MP2 (otherwise called MPEG-1 Audio Layer 2), MPEG-1 Audio Layer 1, CELP (discourse), TwinVQ (low bitrates), SAOL (MIDI).
- Captions: MPEG-4 Timed Text (otherwise called 3GPP Timed Text).
- Some private stream models incorporate Nero's utilization of DVD captions (Vobsub) in MP4 documents. Download MPEG-4Part 14
References (MPEG-4 Part 14)
↑ Apple Computer. "MPEG-4 Fact Sheet". http://images.apple.com/quicktime/pdf/MPEG4_v3.pdf.
↑ RE: QT versus MPEG-4
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