Access raw data on meeting sdk windows custom UI

@chunsiong.zoom Thanks. The code is working fine. I reinstalled the visual studio

But when I joined the meeting ( run in custom UI mode) and start local recording taking permission from host, At the end of the meeting I can see only local recording (mp4). I couldn’t see either raw data output.yuv or audio.pcm.

I can see in this thread
https://devforum.zoom.us/t/access-raw-data-with-meeting-sdk-requires-the-host-to-be-licensed/87871/14
raw recording does not require any license . But last reply say host should be licensed

Could you please help me understanding this.