Multi-view coding with effective handling of renderable portions

An encoder for encoding a multi-view signal into a data stream, comprising:

• a determinator configured to determine, using a processor, a renderable portion of a first view of the multi-view signal which is renderable, by view synthesis, based on a second view of the multi-view signal;
• obtaining, using the processor, a rendering flag associated with the renderable portion of the first view;
• and
• a data stream generator configured to encode, using the processor, the rendering flag and a residual signal into the data stream,
• wherein, based on a first coding mode associated with the rendering flag, the renderable portion of the first view is rendered, by view synthesis, from the second view to generate the rendered portion and replace the renderable portion of a reconstructed first view by the rendered portion, while based on a second coding mode, the replacement of the renderable portion is not performed.

A non-transitory computer-readable medium for storing data associated with a video, comprising:

• a data stream stored in the non-transitory computer-readable medium, the data stream comprising a residual signal and a rendering flag associated with a renderable portion of a first view of the multi-view signal, the rendering flag being indicative of whether the renderable portion is to be replaced with a rendered portion generated, by view synthesis, based on a second view of the multi-view signal,
• wherein at least a portion of the first view is reconstructed using a processor configured to execute operations including:
• reconstructing the at least a portion of the first view based on the residual signal, and
• decoding in a first coding mode or a second coding mode depending on the rendering flag, wherein the decoding includes, in the first coding mode, rendering, by view synthesis, the renderable portion of the first view from the second view to generate the rendered portion and replace the renderable portion of a reconstructed first view by the rendered portion, with not performing the replacement in the second coding mode.