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Blackmagic Design Web Presenter vs MiraBox HSV321 4K Capture Card: Comparison

Blackmagic Design Web Presenter and MiraBox HSV321 4K Capture Card separate most on latency: Blackmagic Design Web Presenter at 1, MiraBox HSV321 4K Capture Card at 65, 6400% in favour of Blackmagic Design Web Presenter. They match on form factor, max recording resolution and hdr support.

Blackmagic Design Web Presenter (External Hardware Switcher / SDI & HDMI In / 1080p60 UVC Webcam Output / Broadcast-Grade)
BlackmagicBlackmagic Design Web Presenter
MiraBox HSV321 4K Capture Card (External USB-C / 1080p60 Capture / 4K60 Passthrough / Aluminum Housing)
MiraBoxMiraBox HSV321 4K Capture Card

Specs

Specification
Blackmagic Design Web Presenter (External Hardware Switcher / SDI & HDMI In / 1080p60 UVC Webcam Output / Broadcast-Grade)
Blackmagic Design Web Presenter
MiraBox HSV321 4K Capture Card (External USB-C / 1080p60 Capture / 4K60 Passthrough / Aluminum Housing)
MiraBox HSV321 4K Capture Card
Form FactorExternal USBExternal USB
BrandBlackmagic DesignMiraBox
Connection TypeUSB 3.0 / 3.2 Gen 1USB-C / Thunderbolt
Max Recording Resolution1080p601080p60
Passthrough Resolution1080p604K60
HDR SupportNoNo
Latency165-6400%
ModelWeb Presenter HDHSV321

Verdict

Blackmagic Design Web Presenter

8 / 10 Expert Rating

Excellent for professional two-camera presenting setups that need to output as a plain webcam.

MiraBox HSV321 4K Capture Card

5 / 10 Expert Rating

Genuinely competitive spec for the price, with the build and software consistency trade-offs typical of budget capture brands.

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