A region of interest, ROI, video request processing method, wherein the method comprises: obtaining an ROI video request sent by a receiving device; selecting a first proximity ROI video from proximity ROI videos, wherein the proximity ROI videos are generated ROI videos that comprise at least a partial region in a target region indicated by the ROI video request and the generated ROI videos are ROI videos generated by the sending device according to other ROI video requests; and sending the first proximity ROI video to the receiving device, wherein the selecting a first proximity ROI video from proximity ROI videos comprises: selecting the first proximity ROI video from candidate ROI videos, wherein the candidate ROI videos are proximity ROI videos of the generated ROI videos that meet a filter condition, wherein the filter condition is a minimum available image ratio and/or a minimum effective image ratio and/or a location of an overlapped region in a proximity region and wherein the selecting the first proximity ROI video from candidate ROI videos comprises: determining a priority of each of the candidate ROI videos; and selecting a candidate ROI video with a highest priority as the first proximity ROI video, wherein the determining a priority of each of the candidate ROI videos comprises: determining the priority of each of the candidate ROI videos according to an effective image ratio and an available image ratio, wherein the effective image ratio is a ratio of an area of an overlapped region to an area of a proximity region, the proximity region is an image region of the candidate ROI video, and the overlapped region is an overlapped part between the target region indicated by the ROI video request and the proximity region and the available image ratio is a ratio of the area of the overlapped region to an area of the target region, wherein, among the two candidate ROI videos, a candidate ROI video with a higher available image ratio has a higher priority, and if available image ratios of two candidate ROI videos are the same, a candidate ROI video of the two candidate ROI videos with a higher effective image ratio has a higher priority. obtaining an ROI video request sent by a receiving device; selecting a first proximity ROI video from proximity ROI videos, wherein the proximity ROI videos are generated ROI videos that comprise at least a partial region in a target region indicated by the ROI video request and the generated ROI videos are ROI videos generated by the sending device according to other ROI video requests; and sending the first proximity ROI video to the receiving device, wherein the selecting a first proximity ROI video from proximity ROI videos comprises: selecting the first proximity ROI video from candidate ROI videos, wherein the candidate ROI videos are proximity ROI videos of the generated ROI videos that meet a filter condition, wherein the filter condition is a minimum available image ratio and/or a minimum effective image ratio and/or a location of an overlapped region in a proximity region and wherein the selecting the first proximity ROI video from candidate ROI videos comprises: determining a priority of each of the candidate ROI videos; and selecting a candidate ROI video with a highest priority as the first proximity ROI video, wherein the determining a priority of each of the candidate ROI videos comprises: determining the priority of each of the candidate ROI videos according to an effective image ratio and an available image ratio, wherein the effective image ratio is a ratio of an area of an overlapped region to an area of a proximity region, the proximity region is an image region of the candidate ROI video, and the overlapped region is an overlapped part between the target region indicated by the ROI video request and the proximity region and the available image ratio is a ratio of the area of the overlapped region to an area of the target region, wherein, among the two candidate ROI videos, a candidate ROI video with a higher available image ratio has a higher priority, and if available image ratios of two candidate ROI videos are the same, a candidate ROI video of the two candidate ROI videos with a higher effective image ratio has a higher priority. determining a priority of each of the candidate ROI videos; and selecting a candidate ROI video with a highest priority as the first proximity ROI video, wherein the determining a priority of each of the candidate ROI videos comprises: determining the priority of each of the candidate ROI videos according to an effective image ratio and an available image ratio, wherein the effective image ratio is a ratio of an area of an overlapped region to an area of a proximity region, the proximity region is an image region of the candidate ROI video, and the overlapped region is an overlapped part between the target region indicated by the ROI video request and the proximity region and the available image ratio is a ratio of the area of the overlapped region to an area of the target region, wherein, among the two candidate ROI videos, a candidate ROI video with a higher available image ratio has a higher priority, and if available image ratios of two candidate ROI videos are the same, a candidate ROI video of the two candidate ROI videos with a higher effective image ratio has a higher priority.