1. Open OBS → Click "+" to choose "Video Capture Device"
3. Properties for Video Capture Device → Device
(Mirabox Video Capture) → Resolution/FPS Type (Custom)
→ Resolution(1920*1080) → FPS (30pfs) → Video Format
(YUY2)→ Audio Out Mode(Output desktop audio
(WaveOut)) → √Use custom audio device → Audio Device
(MiraBox Audio Capture) → OK
2. Creat source → OK
4. Setting → Stream → choose your Live service
(YouTube/Twitch...), input you channel stream key
→ OK
5. Start streaming or start recording
How to Set Capture Card in Windows (OBS)
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