Definition
Video transcoding is the process of converting a compressed video in a given format into another compressed video bitstream.
Introduction
Transcoding is necessary when a given compressed bitstream is not suitable for a video player. For example, the high bitrate video used for a digital TV broadcast cannot be used for streaming video to a mobile device. For delivery to mobile devices, we need video content that is encoded at lower bitrate and lower resolution suitable for low-resource mobile terminals. Pre-encoding video at a few discrete bitrates leads to inefficiencies as the device capabilities vary and pre-encoding video bitstreams for all possible receiver capabilities is impossible. Furthermore, the receiver capabilities such as available CPU, available battery, and available bandwidth vary during a session and a pre-encoded video stream cannot meet such dynamic needs. To make full use of the receiver capabilities and deliver video suitable for a receiver, video...
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References
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© 2008 Springer-Verlag
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(2008). Video Transcoding. In: Furht, B. (eds) Encyclopedia of Multimedia. Springer, Boston, MA. https://doi.org/10.1007/978-0-387-78414-4_250
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DOI: https://doi.org/10.1007/978-0-387-78414-4_250
Publisher Name: Springer, Boston, MA
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