Method of synchronizing metadata research with an audiovisual document by using the parts of the frames and device for the production of such metadata research

摘要

The present invention relates to a process for the synchronization of a first metadata associated with an audiovisual document, this first metadata comprising a first signature of an audio and / or video frame of a sequence of the first document. The parts of the first document are taken up in order to produce a second document, in which the first metadata is no longer associated. A second metadata is first associated with the first document, and this second metadata comprises a second signature of the visual contents extract a portion of a frame of the sequence of the first document. Then, the first signature is detected in a sequence of the second audiovisual document. The second signature is then detected in the audiovisual sequence of the second document and the first metadata is synchronized with the second document by using this second signature. In this way, the accuracy of synchronization between the two video content carried out by the first signature is improved by the second signature, and a new metadata more precise is created.