3.3 Multimedia Enriched Html

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3.3.1 Multimedia

Multimedia is media and content that uses a combination of different content forms. The term can be used as a noun (a medium with multiple content forms) or as an adjective describing a medium as having multiple content forms. The term is used in contrast to media which only use traditional forms of printed or hand-produced material. Multimedia includes a combination of text, audio, still images, animation, video, and interactivity content forms.

Examples of individual content forms combined in multimedia(Source: wikipedia)



still image




3.3.2 Digital Container Format of Multimedia:

A container or wrapper format is a meta-file format whose specification describes how different data elements and metadata coexist in a computer file. The container file is used to identify and interleave different data types. Simpler container formats can contain different types of audio formats, while more advanced container formats can support multiple audio and video streams, subtitles, chapter-information, and meta-data (tags) — along with the synchronization information needed to play back the various streams together.

1. Containers are exclusive to audio:
AIFF (IFF file format, widely used on Mac OS platform)
WAV (RIFF file format, widely used on Windows platform)
XMF (Extensible Music Format)

2. containers are exclusive to still images:
FITS (Flexible Image Transport System) still images, raw data, and associated metadata.
TIFF (Tagged Image File Format) still images and associated metadata.

3, Other flexible containers can hold many types of audio and video, as well as other media. The most popular multi-media containers are:
3GP (used by many mobile phones; based on the ISO base media file format)
ASF (container for Microsoft WMA and WMV, which today usually do not use a container)
AVI (the standard Microsoft Windows container, also based on RIFF)
DVR-MS ("Microsoft Digital Video Recording", proprietary video container format developed by Microsoft based on ASF)
Flash Video (FLV, F4V) (container for video and audio from Adobe Systems)
IFF (first platform-independent container format)
Matroska (MKV) (not limited to any codec or system, as it can hold virtually anything. It is an open standard and open source container format).
MJ2 - Motion JPEG 2000 file format, based on the ISO base media file format which is defined in MPEG-4 Part 12 and JPEG 2000 Part 12
QuickTime File Format (standard QuickTime video container from Apple Inc.)
MPEG program stream (standard container for MPEG-1 and MPEG-2 elementary streams on reasonably reliable media such as disks; used also on DVD-Video discs)
MPEG-2 transport stream (a.k.a. MPEG-TS) (standard container for digital broadcasting and for transportation over unreliable media; used also on Blu-ray Disc video; typically contains multiple video and audio streams, and an electronic program guide)
MP4 (standard audio and video container for the MPEG-4 multimedia portfolio, based on the ISO base media file format defined in MPEG-4 Part 12 and JPEG 2000 Part 12) which in turn was based on the QuickTime file format.
Ogg (standard container for audio fomat Vorbis and video format Theora)
RM/RMVB (RealMedia; standard container for RealVideo and RealAudio)

4. other container formats, such as NUT, MXF, GXF, ratDVD, SVI, VOB and DivX Media Format

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