Capturing control method, capturing control system and capturing device

The invention relates to a capturing control method, a capturing control system and a capturing device. The capturing control method comprises the following steps that a first capturing request is received; whether an image coding cache is unoccupied or not is judged, wherein the image coding cache is used for caching an image corresponding to the first capturing request; when the image coding cache is unoccupied, the image corresponding to the first capturing request is moved into the image coding cache. Image capturing control is performed according to the steps, and images corresponding to manual capturing requests or timing capturing requests are stored in the image coding cache; even if the images requested to be captured exceed a certain frame number, the exceeding capturing requests will not be ignored directly, and therefore the situation that a lot of capturing requests are lost is avoided. Under the condition that the capturing requests are frequent and random, the capturing requests can be output tending to be smooth; meanwhile, an image encoder can be always in a working state, and therefore the maximum encoding capacity of the image encoder can be brought into play as much as possible.