DATAPATH VisionLC-HD2 Dual-Channel LiveStream HDMI Video & Audio Capture Card

DATAPATH VisionLC-HD2 Dual-Channel LiveStream HDMI Video & Audio Capture Card

DATAPATH VisionLC-HD2 Dual-Channel LiveStream HDMI Video & Audio Capture Card

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  • 1Description

The VisionLC-HD2 Dual-Channel LiveStream Capture Card from Datapath provides dual-channel HDMI video and audio capture for small form factor appliances being used in medical environments, simulation systems, lecture capture, real-time streaming, and videoconferencing. The card allows captured video to be processed and delivered in real time to a processor or graphics card.

The VisionLC-HD2 capture card supports onboard color space conversion and scaling, providing the ability to efficiently transfer the video signal in a suitable format for rendering or encoding applications. It natively supports 32-, 24-, 16- and 12-bit YUV and RGB formats. Built upon the Microsoft AV Stream framework, the card's inputs can be accessed and enumerated by any DirectShow or Media Foundation supported application. A Video for Linux (V4L) driver package is available for download.

Dual HDMI capture channel
Channel 1: Up to 297 Mp/s pixel clock capturing up to 3840 x 2160p at 30 Hz
Channel 2: Up to 165 Mp/s pixel clock capturing up to 1920 x 1080p at 60 Hz
1.6 Gb/s total DMA bandwidth
High-performance up and down scaling
Color space conversion to support output formats
PCI Express Gen 2 x 4 low profile
Datapath unified Windows and Linux driver support
Tested applications include Microsoft Media Encoder, VLC, Telestream WireCast, vMix, VirtualDub, VidBlaster, OBS Project, and Adobe Flash Media Encoder
In the Box
DATAPATH VisionLC-HD2 Dual-Channel LiveStream HDMI Video & Audio Capture Card
  • VisionLC Software CD
  • Limited 3-Year Warranty
  • Table of Contents
    • 1Description


    Card Type PCIe Gen 2 x 4 plug-in card
    Connector 2 x HDMI
    Pixel Clock Frequency Channel 1: 297 Mp/s
    Channel 2: 165 Mp/s
    Capture Resolution Channel 1: 2560 x 1600 at 60 Hz, 3840 x 2160p at 30 Hz (UHD)
    Channel 2: 1920 x 1080p at 60 Hz
    Transfer Rate 1.6 Gb/s maximum DMA transfer rate
    Color Space Conversion 32-/ 24- / 16-bit RGB (4:4:4)
    16-bit YUV (4:2:2)
    12-bit YUV, NV12, YV12 (4:2:0)
    Audio Support Stereo pair PCM audio via each HDMI channel at 16 bits in depth, sampling options include 44.1/ 48/ 96 kHz
    Low Latency LiveStream: Capture
    Single frame time plus DMA transfer of final line
    Operating System Support Linux
    Windows Server 2003, 2008, Vista, XP, 7, 8/8.1, and 10
    Power Requirements Maximum Current at 1 A at 3.3 V
    Maximum Power: 5 W
    Operating Temperature 32 to 96°F (0 to 35°C)
    Storage Temperature -4 to 158°F (-20 to 70°C)
    Relative Humidity 5 to 90% non-condensing
    Dimensions 4.1 x 2.5" (103 x 64 mm)
    Packaging Info
    Package Weight 0.45 lb
    Box Dimensions (LxWxH) 12.6 x 6.4 x 3.4"


    VisionLC-HD2 Dual-Channel LiveStream HDMI Video & Audio Capture Card is rated 5.0 out of 5 by 1.
    Rated 5 out of 5 by from Game Streamer's Dream This features 2 HDMI ports on a small PCIe x4 card. But instead of the typical in and out HDMI passthrough, these are both inputs. Slot 1 can support signals up to 1080p 60FPS, whereas slot 2 can support up to 2160p UHD 4K up to 30 FPS! Yeah, pretty neat. This makes for a very flexible capture solution. There's a couple potential use cases here. you could use it for a game capture input and a facecam input on the same card, which makes for a lot less system usage and setup hassles compared to the like 4 capture card setup I usually run. Or you could put 2 game captures in at once for a dual stream setup or for switching consoles, game console and PC input, and so on. It's super flexible. You can use both inputs at once or one at a time. As video devices, they're just labeled as inputs one and two. Annoyingly, the physical HDMI ports are not labeled, so I keep having to reference a little paper pamphlet they included with my loaner unit. You might want to use a labelmaker or sharpie to mark these, as only 1 port supports 4k input. That being the port closest to the computer motherboard. The outermost port only supports up to 1080p 60FPS. This is a tiny little PCIe capture card, smaller than my Elgato HD60 Pro. It even comes with a low-profile bracket for a small form-factor streaming rig. The card itself requires no extra power and doesn't have a fan, BUT there is one annoyance. To support the full bandwidth of both signal channels, this is a PCIe 4x card, meaning you won't be able to use one of the small PCIe 1x slots like with the Elgato and AverMedia game capture cards I've reviewed. Most normal PC motherboards only have 1x and 16x slots, so you'll likely need to populate one of your bigger slots with this card. The card works perfectly in software like OBS Studio, Wirecast, and vMix in Windows, and they have a Video4Linux driver package for it, as well. It was super easy to set up in OBS, and I've done quite a few of my Twitch streams with this card. Here, my game console goes in one HDMI port for my main image, and my camcorder runs via HDMI to the other port for facecam, as well. Super easy to set up! $600 might be tough to swallow for a capture card, but when you consider the low-latency uncompressed capture and the fact that it's two capture cards in one, it's actually a pretty solid value.
    Date published: 2017-05-22
    • y_2018, m_9, d_17, h_14
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