Relating declarative hypermedia objects and imperative objects through the NCL glue language

This paper introduces a multimedia document model that can structure community comments about media. In particular, we describe a set of temporal transformations for multimedia documents that allow end-users to create and share personalized timed-text comments on third party videos. The benefit over current approaches lays in the usage of a rich captioning format that is not embedded into a specific video encoding format. Using as example a Web-based video annotation tool, this paper describes the possibility of merging video clips from different video providers into a logical unit to be captioned, and tailoring the annotations to specific friends or family members. In addition, the described transformations allow for selective viewing and navigation through temporal links, based on end-users' comments. We also report on a predictive timing model for synchronizing unstructured comments with specific events within a video(s). The contributions described in this paper bring significant implications to be considered in the analysis of rich media social networking sites and the design of next generation video annotation tools.

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Section: Supporting Captions In Nclmentioning

confidence: 99%

Creating and sharing personalized time-based annotations of videos on the web

Guimarães

César

Bulterman

2010

Proceedings of the 10th ACM Symposium on Document Engineering

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“…Similar to all other languages mentioned in this paper, NCL properties can be manipulated by using imperative languages. Ginga defines Lua [14] as the NCL scripting language. However, unlike all other languages mentioned in this paper, NCL allows for declaratively handling the values of media-object's properties, using causal relationships, represented in NCL by <link> elements [3].…”

Section: The Model Support In Nclmentioning

confidence: 99%

Controlling the focus and input events in multimedia applications

Soares

Moreno

Vasconcelos

2015

Proceedings of the 30th Annual ACM Symposium on Applied Computing

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Multimedia applications can contain other embedded multimedia applications specified using the same or different languages. Therefore, during an application presentation there must be a mechanism to rule which language players and media players control commands (events) coming from input devices, and which ones control the focus on their related child objects, in a given moment of time. This paper presents a hierarchical control model addressing this mechanism. The proposal aims at supporting declarative languages targeting both Web and Digital TV applications. The model is first presented in its general scope. Then, its potential use by some standard declarative hypermedia languages (HTML-based, SMIL and NCL) is discussed. Since NCL has adopted the model in its standard specification, the discussion targeting NCL is more detailed, showing how the NCL player, part of the reference implementation of Ginga middleware, has been developed. NCL and Ginga are ITU-T H.761 Recommendation for IPTV services and part of the ISDB-T standards.

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“…Authors can as well associate hyperlinks with media objects, define alternatives for presentation, and describe the layout of the presentation on multiple devices. Moreover, NCL provides support for imperative scripts in order to extend its computational power [20]. Unlike HTML and Flash, NCL has a strict separation between the document's content and structure, and it provides non-invasive control of presentation linking and layout.…”

Section: Mashups In Multimedia Documentsmentioning

confidence: 99%

Just-in-time personalized video presentations

Jansen

César

Guimarães

et al. 2012

Proceedings of the 2012 ACM Symposium on Document Engineering

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Using high-quality video cameras on mobile devices, it is relatively easy to capture a significant volume of video content for community events such as local concerts or sporting events. A more difficult problem is selecting and sequencing individual media fragments that meet the personal interests of a viewer of such content. In this paper, we consider an infrastructure that supports the just-in-time delivery of personalized content. Based on user profiles and interests, tailored video mash-ups can be created at view-time and then further tailored to user interests via simple end-user interaction. Unlike other mash-up research, our system focuses on client-side compilation based on personal (rather than aggregate) interests. This paper concentrates on a discussion of language and infrastructure issues required to support just-in-time video composition and delivery. Using a high school concert as an example, we provide a set of requirements for dynamic content delivery. We then provide an architecture and infrastructure that meets these requirements. We conclude with a technical and user analysis of the just-in-time personalized video approach.

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Relating declarative hypermedia objects and imperative objects through the NCL glue language

Cited by 10 publications

References 4 publications

Creating and sharing personalized time-based annotations of videos on the web

Creating and sharing personalized time-based annotations of videos on the web

Controlling the focus and input events in multimedia applications

Just-in-time personalized video presentations

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