The ornamental design for a videocamerarig, as shown and described.
FIG. 1 is a perspective view of a video camera rig;
FIG. 2 is an enlarged perspective view of an indicated area 2 of FIG. 1;
FIG. 3 is a top view thereof;
FIG. 4 is a bottom view thereof; and,
FIG. 5 is a side view thereof.
The broken lines depict portions of a video camera rig in which the design is embodied that form no part of the claimed design. The dot-dash lines denote boundaries of the claim and form no part of the claimed design.