Guides · HDMI Cam

iPhone HDMI Capture Card Setup Checklist

A compact checklist for avoiding black bars, unstable power, wrong mirroring, and focus hunting.

Get on the App Store HDMI Cam

Use reliable hardware

Prefer a stable Apple or reputable USB-C/Lightning HDMI adapter and a mainstream UVC capture card.

Long streams can drain battery and warm the phone. Keep power connected and watch thermal state in the test overlay.

Use Phone Direct Output for natural monitoring. Use OBS Portrait Optimized for landscape-only capture cards and vertical streams.

Lock AF/AE after framing. Enable front camera mirroring when the self-facing image should feel natural.

Support

Why does my capture show black bars?

It is often caused by mismatched aspect ratio or portrait output entering landscape-only capture hardware.

Should I keep the test overlay on?

Use it before the stream, then switch to clean output for the live feed.

Guides

Detailed workflows for OBS, vertical streaming, capture cards, and iOS video effects.

Turn an iPhone into a focused OBS camera feed without watermark, camera UI, or extra overlays.

A practical workflow for TikTok-style, Shorts-style, and portrait live streams in OBS.

A compact checklist for avoiding black bars, unstable power, wrong mirroring, and focus hunting.

HDMI Cam works with system-level iOS video effects instead of adding heavy in-app filters.