{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,4,13]],"date-time":"2026-04-13T21:00:50Z","timestamp":1776114050104,"version":"3.50.1"},"reference-count":23,"publisher":"MDPI AG","issue":"7","license":[{"start":{"date-parts":[[2012,6,26]],"date-time":"2012-06-26T00:00:00Z","timestamp":1340668800000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/3.0\/"}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["Sensors"],"abstract":"Ambient Intelligence is a new paradigm in which environments are sensitive and responsive to the presence of people. This is having an increasing importance in multimedia applications, which frequently rely on sensors to provide useful information to the user. In this context, multimedia applications must adapt and personalize both content and interfaces in order to reach acceptable levels of context-specific quality of service for the user, and enable the content to be available anywhere and at any time. The next step is to make content available to everybody in order to overcome the existing access barriers to content for users with specific needs, or else to adapt to different platforms, hence making content fully usable and accessible. Appropriate access to video content, for instance, is not always possible due to the technical limitations of traditional video packaging, transmission and presentation. This restricts the flexibility of subtitles and audio-descriptions to be adapted to different devices, contexts and users. New Web standards built around HTML5 enable more featured applications with better adaptation and personalization facilities, and thus would seem more suitable for accessible AmI environments. This work presents a video subtitling system that enables the customization, adaptation and synchronization of subtitles across different devices and multiple screens. The benefits of HTML5 applications for building the solution are analyzed along with their current platform support. Moreover, examples of the use of the application in three different cases are presented. Finally, the user experience of the solution is evaluated.<\/jats:p>","DOI":"10.3390\/s120708710","type":"journal-article","created":{"date-parts":[[2012,6,27]],"date-time":"2012-06-27T09:59:06Z","timestamp":1340791146000},"page":"8710-8731","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":13,"title":["Subtitle Synchronization across Multiple Screens and Devices"],"prefix":"10.3390","volume":"12","author":[{"given":"Aitor","family":"Rodriguez-Alsina","sequence":"first","affiliation":[{"name":"Center of Ambient Intelligence and Accessibility of Catalonia, Universitat Aut\u00f2noma de Barcelona, 08193 Bellaterra, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Guillermo","family":"Talavera","sequence":"additional","affiliation":[{"name":"Center of Ambient Intelligence and Accessibility of Catalonia, Universitat Aut\u00f2noma de Barcelona, 08193 Bellaterra, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"given":"Pilar","family":"Orero","sequence":"additional","affiliation":[{"name":"Center of Ambient Intelligence and Accessibility of Catalonia, Universitat Aut\u00f2noma de Barcelona, 08193 Bellaterra, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]},{"ORCID":"https:\/\/orcid.org\/0000-0002-9540-8759","authenticated-orcid":false,"given":"Jordi","family":"Carrabina","sequence":"additional","affiliation":[{"name":"Center of Ambient Intelligence and Accessibility of Catalonia, Universitat Aut\u00f2noma de Barcelona, 08193 Bellaterra, Spain"}],"role":[{"role":"author","vocabulary":"crossref"}]}],"member":"1968","published-online":{"date-parts":[[2012,6,26]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"315","DOI":"10.1007\/s00779-010-0358-9","article-title":"Ubiquitous Computing and Ambient Intelligence","volume":"15","author":"Bravo","year":"2011","journal-title":"Person. Ubiquit. Comput."},{"key":"ref_2","doi-asserted-by":"crossref","first-page":"455","DOI":"10.1080\/00207594.2011.565343","article-title":"Languages on the Screen: Is Film Comprehension Related to the Viewers' Fluency Level and to the Language in the Subtitles?","volume":"46","author":"Lavaur","year":"2011","journal-title":"Int. J. Psychol."},{"key":"ref_3","unstructured":"Porteiro, M. (2012). The Use of Subtitles to Treat Speech-Language Disorders. J. Special. Transl. Jos. Trans., accepted."},{"key":"ref_4","doi-asserted-by":"crossref","unstructured":"Kompatsiaris, D.Y., Merialdo, P.B., and Lian, D.S. (2011). TV Content Analysis: Techniques and Applications, CRC Press, Taylor Francis LLC.","DOI":"10.1201\/b11723"},{"key":"ref_5","unstructured":"Matroska SRT Subtitles. Available online: http:\/\/www.matroska.org\/technical\/specs\/subtitles\/srt.html (accessed on 18 March 2012)."},{"key":"ref_6","unstructured":"Hickson, I. Available online: http:\/\/www.w3c.org\/TR\/html5\/ (accessed on 18 March 2012)."},{"key":"ref_7","unstructured":"Available online: http:\/\/www.w3.org\/TR\/SMIL\/ (accessed on 18 March 2012)."},{"key":"ref_8","doi-asserted-by":"crossref","unstructured":"Pfeiffer, S., and Parker, C. (2009, January 20\u201321). Accessibility for the HTML5