DOC PREVIEW
UT INF 385E - Audio and Video

This preview shows page 1-2-3-4-5-6 out of 19 pages.

Save
View full document
View full document
Premium Document
Do you want full access? Go Premium and unlock all 19 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 19 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 19 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 19 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 19 pages.
Access to all documents
Download any document
Ad free experience
View full document
Premium Document
Do you want full access? Go Premium and unlock all 19 pages.
Access to all documents
Download any document
Ad free experience
Premium Document
Do you want full access? Go Premium and unlock all 19 pages.
Access to all documents
Download any document
Ad free experience

Unformatted text preview:

Audio and VideoOverviewWhat is digital media?What is new media?What is the connection to Information Architecture?Foundations for Internet Audio and VideoMore Common VocabularyAudio and Video Vocabulary ContinuedVideo File FormatsAudio File FormatsMedia PlayersWhat are some general design guidelines to follow?Any video guidelines?How about audio guidelines?How do you embed files on a webpage?How I use Internet Audio and Video… every day.The Future… is here!Current Issues in New MediaMore ResourcesAudio and VideoJennifer NobleINF 385ENovember 13, 2007Overview•Digital media introduction•Information architecture’s connection•Common vocabulary and technical terms•Design guidelines for implementation•Everyday uses for audio and video•A glimpse into the future of digital mediaWhat is digital media? •Literally, “digital media” refers to any kind of electronic media that works on digital codes. •Examples of digital media include, but are not limited to, cell phones, CDs, digital video, digital TV, e-books, the Internet, video games, etc. •Audio and video can either be “digitized” from analog sources or be created in entirely digital environments.What is new media?•The convergence of media and computing technologies led to the term “new media.” •Examples include video games, virtual worlds, blogs, wikis, interactive television, mobile devices, and mash-ups. •As these media forms mature, the inclusion of both digital audio and video will become even more essential parts of this type of communication.What is the connection to Information Architecture? •Audio and video are both great ways to add dynamic aspects to a project.•This type of media is most accessible when identified in some way, either through formal taxonomies or less formal folksonomies. •As Web 2.0 evolves, more user-defined videos and audio tracks will become part of websites. It’s easy to utilize these types of sites now in personal pages thanks to the ease of embedding… and who says you can’t create a better version of youtube.com?Foundations for Internet Audio and Video•Streaming Media: multimedia that is continuously received and displayed to the audience while being delivered by the content provider.•User Datagram Protocol (UDP) and Real-time Transport Protocol (RTP) are the basis of steaming media technology.More Common Vocabulary•Codec: a codec is a computer program that both shrinks(encodes) large movie files, and makes them playable on your computer. Codec programs are required for your media player to play your downloaded music and movies.•Common codecs include XVID, DivX, MP3, and WMA. •To see how many video codecs are available, check out this page.Audio and Video Vocabulary Continued•Lossless Compression: type of encoding that allows the exact original data to be reconstructed from the compressed data.•Lossy Compression: type of encoding that discards some information during the compression process; the data that is retrieved during decompression is not identical to the original file.Video File FormatsFile Format Extension More InformationAudio Video Interleaved .avi Multimedia containerfile developed byMicrosoftQuicktime .mov Multimedia containerfile developed by AppleReal Media .ram, rm Multimedia containerformat developed byReal Networks; usedmostly for streamingMoving PicturesExperts Group (MPEG-1).mpg, .mpeg Group of AV codingstandards; quality isclose to a VCD/VHSMPEG-4 Part 14 .mp4, m4a, .m4p Multimedia containerformat; can be used foraudio and videoapplicationsThird GenerationPartnership Project.3gp, .3g2 Simplified version ofMPEG-4 Part 14 formobile phonesDivX .divx Best known for theDivX Codec; added amedia container formatin 2005Shockwave FlashObject.swf Originally developedfor vector graphics,Flash now allows audioand video as wellAudio File FormatsFile Format Extension TypeAudio Interchange FileFormat.aiff, .aif UncompressedWaveform .wav UncompressedFree Lossless Audio Codec .flac LosslessCompressionAdvanced Audio Coding(AAC).mp4, .m4p, m4a Lossy CompressionMPEG-3 .mp3 Lossy Compression(Proprietary)Windows Media Audio .wma Lossy Compression(Proprietary)Real Audio .ra Lossy compression(Proprietary)Media Players•Media players play back multimedia files.•Common media players include:–Windows Media Player–iTunes–Quicktime–Real Player–Flash–DivX Player•For a full comparison of player features, see the Wikipedia article.What are some general design guidelines to follow?•Make sure that having an audio or video clip is useful to the purpose of your site. If you don’t need it, don’t use it.•Be clear about the technological demands of your media. •Provide a clear link to the necessary software to view your media.•Stick with the more standard formats in order to reach a wider audience.•If you can, offer multiple formats for those visitors who need choices.Any video guidelines?•Remember there are three primary ways of displaying videos: as a download link, opening in a separate page, or embedded in the primary page.•Try using screenshots of the video content in its description.•Segment long clips; if the file’s too big, it will take too long to load - and where will your audience be?•Think about how your user will access the content.How about audio guidelines?•Again, summarize the content; the user needs to know what the content is about!•Make sure users have control buttons when the audio is embedded in the page.•Seriously consider whether or not your page REALLY needs a looping midi file in the background. •Estimate download times if you’re just providing links to the content.How do you embed files on a webpage? •Choose your file format. •Decide how you want to present your files. Do you want people to download the files? Stream them? •Pick a player. Should you allow the user’s browser use its default player? Or do you want to use a flash-based player? You can even use embedded players developed by other websites. •Audio specifics can be found here while video-related answers can be found here.How I use Internet Audio and Video… every day. •Besides the obvious examples of youtube, what kind of applications do people use regularly? •Social networking sites such as MySpace and Facebook support media uploads. Other networking sites center around media sharing, such as Imeem or Pandora.•All forms of media have been translated into Internet terms; you can listen to Internet


View Full Document

UT INF 385E - Audio and Video

Documents in this Course
Load more
Download Audio and Video
Our administrator received your request to download this document. We will send you the file to your email shortly.
Loading Unlocking...
Login

Join to view Audio and Video and access 3M+ class-specific study document.

or
We will never post anything without your permission.
Don't have an account?
Sign Up

Join to view Audio and Video 2 2 and access 3M+ class-specific study document.

or

By creating an account you agree to our Privacy Policy and Terms Of Use

Already a member?