B4J Question vlc_Prepared occured twice

[peacemaker]

HI, All

VLC player after .Play(videofile) starts loading the video, but _Prepared event is fired twice:
Maybe known the reason ?

18.01.2022 16:15:02.749: Video is ready: 1280 x 720px; 291 seconds
18.01.2022 16:15:02.79: Video is ready: 1280 x 736px; 291 seconds