IPTV time-shift playback method, IPTV system and device

Abstract

The invention provides a network television time shifting play method as well as a network television system and device. A proxy player obtains a time shifting playlist from a time-shifting server and a live telecast playlist from a live telecast server, and generates a current time shifting window playlist; the current time shifting window playlist is provided to a player, so that the player can select a positioning segment from the current time shifting window playlist; when the positioning segment belongs to a live telecast segment, the proxy player obtains the live telecast segment which starts from the positioning segment and transmits the live telecast segment to the player; and when the positioning segment belongs to a time shifting segment, the proxy player obtains the time shifting segment which starts from the positioning segment and transmits the time shifting segment to the player. Through the network television time shifting play method as well as the network television system and device provided by the invention, the time shifting play efficiency can be improved.

Description

technical field [0001] The invention relates to video playing technology, in particular to a network TV time-shift playing method, network TV system and device. Background technique [0002] With the popularization of broadband network and video website, Internet TV (abbreviated as WebTV) technology is more and more widely used. WebTV adopts HTTP Live Streaming (HTTP Live Streaming, HLS for short) protocol based on Hyper Text Transfer Protocol (Hyper Text Transfer Protocol, HTTP for short) technology. [0003] In the existing HLS protocol, the method for live video broadcasting is: the player uses a uniform resource locator (Uniform Resource Locator, referred to as URL) to request a playlist from the media server, and the media server returns the playlist to the player according to the URL. The playlist includes a chronologically ordered list of 3 segments of media files. According to the above-mentioned existing HLS protocol, the methods for time-shifting video playback i...

AI Technical Summary

Problems solved by technology

[0004] When using the above method 1, the user must re-initialize the player every time he enters the live broadcast operation, time-shift operation or positioning operation, which makes the method process complicated, the initialization time is long, and because the initialization process causes a black screen, so the method 1 will be used frequently A black screen appears, resulting in low efficiency and poor effect of the time-shifted playback process

When the above method 2 is adopted, the length of each fragment in the original HLS protocol is usually 10 seconds, and the player regularly obtains the latest playlist from the media server according to the time interval of the fragment length. The existing HLS protocol cannot monitor the live broadcast status. Distinguished from the time-shifted playback state, the media server returns a playlist with a complete time-shifted length to the player, and for the time-shifted playback process, the time-shifted length is usually 1-2 hours, so this method does not affect the minutes included in the playlist. The number of slices has been increased by hundreds of times, which greatly consumes the user's bandwidth and causes the user's playback bandwidth to be insufficient, resulting in low efficiency and poor effect of the time-shifted playback process.

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