QT program integration easyplayer RTSP streaming media player screen flicker what is the reason?

TSINGSEE All video platforms under Qingxi video have flexible video capabilities 、 Strong expandability 、 High openness , At the same time, in order to meet the integration and secondary development needs of users , We also provide a wealth of API Interface and SDK, It is convenient for users to call and integrate .TSINGSEE Each video platform of Qingxi video can support different protocol access , Such as GB GB28181、RTSP/Onvif、RTMP, And Haikang EHOME、 The sea, SDK、 Dahua SDK etc. , It can flexibly meet the platform project construction needs of users .

There's user feedback , stay Qt Integration in the program EasyPlayer-RTSP player , When used on site, the video and background image alternate （ flashing ）.

Regarding this , We checked .

1） First , Use another player to play RTSP Address video stream , Test for flicker . Use VLC Play RTSP flow , No flicker .

2） Check whether it is frame loss and decoding failure . During the investigation, I learned that , The commissioning information indicates that there is no such situation （ notes ： If the frame is lost and decoding fails, there will be no flicker , A skip frame is displayed ）, So that's why the exclusion .

3） Guess it might be Qt An operation in the program causes the interface to refresh .Qt There is update() Method , This method will refresh the interface operation .

After finding the cause of the problem , The solution is relatively simple . find Qt in update function , Just remove it .

The following is the simulation update, Refresh the interface regularly （ Start timer （200ms） Refresh ）：

TSINGSEE The development of Qingxi video EasyPlayer The player contains multiple versions , Include EasyPlayer-RTSP、EasyPlayer-Pro、EasyPlayer.js etc. , Can support H.264 And H.265 And other video formats .

EasyPlayer Streaming media player is flexible , Multiple derivative versions, whether in docking equipment model type , Or in the compatibility of docking codes , Both have high availability and stability , and EasyPlayer The upper layer has a set of mature video buffer and frame chasing algorithm , Excellent performance in video application . Interested users can go to the demonstration platform for experience and deployment testing .