1. A method comprising: receiving, by a processing device of a content sharing platform, a video content; selecting at least one video frame from the video content, wherein the at least one video frame covers a spatial area at a first resolution; subsampling the at least one video frame to generate a first representation of the at least one video frame, wherein the first representation is at a second resolution that is lower than the first resolution; selecting, at the first resolution, a sub-region of the at least one video frame to generate a second representation of the at least one video frame, wherein the sub-region covers a spatial area that is smaller than the spatial area covered by the at least one video frame; and executing a convolutional neuron network, using the first representation as a first input of the convolutional neuron network and using the second representation as a second input of the convolutional neuron network, to generate an annotation for the video content.