Video synchronous playback control system and method

Abstract

The invention provides a synchronous video playing control system which comprises a server, at least two terminals and communication cables; a first industrial communication card is arranged in the server; a second industrial communication card is respectively arranged in each terminal; the number of the communication cables is the same with that of the terminals; each terminal is respectively connected with the server through the communication cable; and one end of each communication cable is connected with the first industrial communication card, and the other end of each communication cable is respectively connected with the second industrial communication card. The invention has the beneficial effects that: according to the invention, the connection between the server and the terminals is realized through the first industrial communication card, the second industrial communication cards and the communication cables, a special data channel is provided, and real-time synchronization is instantly triggered through the instant interruption and other switch quantity of a peripheral component interconnection (PCI) industrial control card, which is as a switch controls the on and the off of current; and errors caused by the instability and the uncertainty of network transmission are completely abandoned.

Description

technical field [0001] The invention relates to a video playing system, in particular to a video synchronous playing control system and method. Background technique [0002] The traditional video synchronization solution uses TCP / IP protocol and UDP protocol for communication. In order to keep multiple machines playing synchronously, eliminate various differences, and maximize the synchronization of played video, audio and special effects, the server sends a synchronization time signal In this way, the server sends the time signal in the network through the UDP (User Datagram Protocol) communication protocol according to a certain time interval (1 second). After each player receives the time signal, it controls the playback process according to the signal to eliminate the difference. achieve the purpose of synchronization. [0003] Although the above method considers various factors of network asynchrony, this method still has great uncertainty. First of all, the time point...

AI Technical Summary

Problems solved by technology

[0003] Although the above method considers various factors of network asynchrony, this method still has great uncertainty. First of all, the time point when each computer receives the network is uncertain. Even for a single computer, The time delay between this time and the next time the network message is received is also uncertain. If multiple packets are lost, it will cause out-of-synchronization. If the accumulated error will also cause obvious out-of-synchronization, if the synchronization is continuously forced, there will be jumps frame splash screen

All of this is due to the unreliability and uncertainty of traditional network transmission

Images