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Editing compressed video is a difficult task especially when done in real-time and it usually requires video to be decoded, edited and re-encoded. However, it is important for many business models that the video content can be modified and personalized video for example with advertisements included could be delivered to end-users. This paper introduces how independently coded video regions can be...
In this work, a novel implementation of a video transcoder that converts a video sequence encoded with the H.264/AVC standard to a temporally scalable H.264/SVC stream is achieved with the use of a pixel-domain heterogeneous architecture. The input H.264/AVC stream is fully decoded by the transcoder. Macroblock coding modes are extracted from the input stream and are reused to encode the output stream...
Soccer is one of the most streamed video contents over the European mobile networks. However, technical limitations, such as stringent bandwidth constraints and reduced size of the mobile terminal displays, make the delivery of soccer videos with satisfactory quality a challenging task. In this work we propose the optimization of the encoding process by minimizing the bandwidth associated to the audience...
Video compression standards commonly adopted in wireless multimedia transmission systems generally apply variable length codes (VLCs) to achieve the required data-rates. The resulting bitstreams are sensitive to transmission errors which cause visual artifacts that propagate in both spatial and temporal domains, thus reducing significantly the quality of the reconstructed video sequences. This paper...
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