Modification of objects in film

A computer-implemented method comprising:

• obtaining source video data comprising a plurality of sequences of image frames;
• detecting respective instances of an object within at least some sequences of image frames of the plurality of sequences of image frames;
• and
• for a first instance of the object detected within a first sequence of image frames of the source data:
• obtaining, using a neural renderer, replacement video data comprising a modified instance of the object;
• and
• replacing at least part of the first instance of the object in the first sequence of image frames with at least part of the modified instance of the object.

One or more non-transitory computer-readable media storing instructions executable by one or more processors, wherein the instructions, when executed, cause the one or more processors to perform operations comprising:

• obtaining source video data comprising a plurality of sequences of image frames;
• detecting respective instances of an object within at least some sequences of image frames of the plurality of sequences of image frames;
• and
• for a first instance of the object detected within a first sequence of image frames of the source data:
• obtaining, using a neural renderer, replacement video data comprising a modified instance of the object;
• and
• replacing at least part of the first instance of the object in the first sequence of image frames with at least part of the modified instance of the object.