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This paper presents a joint indexing-coding approach applied to global camera motion detection in the scalable H.264/SVC compressed domain. Our goal is to facilitate and to improve indexing in the MPEG compressed domain, if necessary by modifying the original coded stream, without losing compatibility with the standard. In frames with very noisy motion vector fields, we use the global motion information obtained by analyzing the raw video to modify the vectors of chosen macroblocks. This results in slightly decreased coding efficiency, but improved and more reliable indexing results in the compressed domain.