Play RTSP video discardFps

Hello, I have a question when i use android Tutorial5 play rtsp video, when video play, I found out the video was caton, and Android studio Logcat show warning: [c2.mtk.avc.decoder 1280x720 inputFps=25 outputFps=25 renderFps=15, discardFps=10] . What kind of question is that? How should I optimize

The problem has been fixed, it is a parameter issue, I set latency=200 in pipeline, In fact, It should be set this way: latency=200 * GST_MSECOND