Method, system and user device for obtaining a key frame in a streaming media service

摘要

The invention discloses a method, system and user device for obtaining a key frame in a streaming media service. The method includes: setting a threshold time for receiving a key frame, receiving video data by a client from a streaming media server, and analyzing the video data, when the network state is normal, sending a request for adjusting a video key frame generating frequency to the streaming media server if a video key frame is not received by the client in the threshold time; when the request is received, the streaming media server determines whether to adjust the video key frame generating frequency, if so, then adjusts the video key frame generating frequency according to the request of the client. The application of the invention can improve the quality of the streaming media service, and advance the experience level of the streaming media service.

主权项

1. A method for obtaining a key frame in a streaming media service, comprising:
setting a threshold time for receiving a video key frame; a client receiving video data from a streaming media server, and analyzing the video data; when the network state is normal, sending a request for adjusting a video key frame generating frequency to the streaming media server if the video key frame is not received by the client in the threshold time; and the streaming media server determining whether to adjust the video key frame generating frequency when the request is received, if so, adjusting the video key frame generating frequency according to the data of the minimum request time from one or more clients within a same period of time during multicast or broadcast, or adjusting the video key frame generating frequency directly according to the request of the client during video on demand; wherein the video key frame generating frequency is a parameter representing a video key frame generating time interval; wherein the client analyzes the video data through SET_PARAMETER METHOD in the real time streaming protocol, RTSP, standard to determine whether a video key frame is received in the threshold time; wherein the SET_PARAMETER METHOD are expanded, only expanding relevant fields without changing the original data structure defined by the method, with a parameter Key-Frame-Span which representing the time of request for a key frame generating frequency.