Video preview method and device, and intelligent terminal

The invention provides a video preview method and device. The video preview method comprises the following steps: receiving an operation instruction that the user needs to obtain a video; calling the main software development kit SDK corresponding to the browser plug-in through the browser plug-in; confirming the camera manufacturer corresponding to the video according to the operation instruction of the video, which is performed by the main software development kit SDK; finding out the first video call interface from the prestored manufacturers and the SDK mapping relationship according to the camera manufacturer, wherein the first video call interface corresponds to the first SDK or which the first SDK corresponds to according to the SDK mapping relationship, which is correspondence with the manufacturer; calling the first video call interface to obtain the video through the main SDK; and transmitting the video to the browser plug-in to preview. The technical proposal provided by the invention has the advan