This paper investigates methods for dynamically composing video streams (Video Mashup) to support the delivery of personalized video services across multiple devices over IMS networks. The widespread use of camera phones and video phones, and the success of user-generated content services such as YouTube, are fuelling demand from prosumers (producers and consumers) for video-based services offering intuitive and compelling visual experiences. Many existing video services are optimized for a single device or single delivery channel e.g. web2.0 content for PC users or professional content for IPTV customers. With tripleplay or quadruple-play service offerings, service providers need to provide the same experience across all devices, while also offering a personalized experience based on user profile/preferences. Service providers need to exploit the visual nature of video services to push other revenue-generating content (e.g. news services and adverts) to the consumer.
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