Implementation method, computer program product and system for recording and transmitting video at same time

The invention relates to the technical field of video transmission, in particular to an implementation method and system for recording and transmitting a video at the same time. In a real-time video recording process, a video is recorded and uploaded at the same time, video contents are synchronously uploaded to a server in a data block form, and a check value of each data block is recorded. When recording is finished, the check value of each data block is calculated again, and the change of the check value indicates the change of the information of the data block. And uploading the increment of the changed data block and the verification value of the complete video file to a server. And the server receives the updated data block, generates a complete video file and calculates a verification value of the complete video file. The server compares the received check value and the calculated check value, if the two check values are consistent, it is considered that the video is successfully received, a service ba