Video switching method, device and video patrol system

A video switching apparatus, comprising:

• a receiving determining module, configured for receiving a video switching instruction, and determining a display device corresponding to a to-be-played video;
• a judging module, configured for determining whether the determined display device is currently playing a video;
• a determining module, configured for determining a task identifier corresponding to the currently played video when a result of the judging module is YES;
• a stopping module, configured for stopping playing of the currently played video according to the task identifier;
• and;
• a sending module, configured for sending the to-be-played video to the display device for playing,
• wherein the determining module is further configured for:
• when a result of the judging module is yes, obtaining a correspondence between the currently played video and a thread number of a thread occupied by the currently played video, and determining a thread occupied by the currently played video according to the obtained correspondence;
• and wherein the stopping module is further configured for:
• sending a release resource instruction for the determined thread, so that the thread releases resources occupied by the currently played video,
• wherein the receiving determining module is further configured for:
• determining, when at least two video switching instructions are received simultaneously, respectively display devices corresponding to the at least two video switching instructions;
• determining whether there is an identical display device corresponding to more than one display devices;
• if so, determining priorities of first video switching instructions corresponding to the identical display device, and determining the identical display device as the display device corresponding to a first video switching instruction with the highest priority.

A video patrol system, comprising:

• a server and a display device, wherein,
• the server is configured for receiving a video switching instruction, and determining a display device corresponding to a to-be-played video;
• determining whether the determined display device is currently playing a video;
• if so, determining a task identifier corresponding to the currently played video;
• stopping playing of the currently played video according to the task identifier;
• and sending the to-be-played video to the display device for playing, wherein determining a task identifier corresponding to the currently played video comprises:
• obtaining a correspondence between the currently played video and a thread number of a thread occupied by the currently played video;
• determining a thread occupied by the currently played video according to the obtained correspondence;
• and wherein stopping playing of the currently played video according to the task identifier comprises:
• sending a release resource instruction for the determined thread, so that the thread releases resources occupied by the currently played video;
• and wherein when at least two video switching instructions are received simultaneously, determining a display device corresponding to the to-be-played video comprises:
• determining respectively display devices corresponding to the at least two video switching instructions;
• determining whether there is an identical display device corresponding to more than one display devices;
• if so, determining priorities of first video switching instructions corresponding to the identical display device, and determining the identical display device as the display device corresponding to a first video switching instruction with the highest priority;
• the display device is configured for receiving and playing the video send by the server.