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This data can then be processed and copied using DMA transfers to the host system for display, storage or streaming. The XtremeAV-HD1+ captures both video channels simultaneously and triple buffers them into onboard storage, alongside an audio stream that can be selected from the HDMI or analogue audio port. The Standard Definition channel accepts composite video on a single RCA connector and can auto-detect between PAL, NTSC and SECAM formats up to 720×576 at 16 bit colour.
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The High Definition signals are input via a DVI-I connector and can support HDMI, DVI, RGB and analog Component (YPbPr) video formats all at resolutions up to 4096 x 4096 pixels and supports 1080p (1920×1080) at 60 frames per second. The XtremeAV-HD1+ also adds analog audio capture, which can be perfectly synchronised with either video capture channel. The XtremeAV-HD1+ has two independent video capture channels – one supporting HD capture and a second simultaneously accepting Standard Definition composite video. This card provides HDMI audio capture and streaming from DVI Channel, as well as balanced and unbalanced analogue audio capture.
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It can also capture digital video for progressive and interlaced modes up to 4096×4096 resolutions to a maximum of 165 MHz pixel clock for DVI and 170 MHz for analogue RGB. The XtremeAV-HV1+ has up to 256 MB buffer memory, enabling triple buffering for all video modes for tear free play back.
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The XtremeAV-HD1+ is a four lane PCI Express capture card providing up to 800MB/s bandwidth from the capture engine. Provides simultaneous SD and HD video capture through one channel of DVI-I or HDMI capture and one channel of composite video capture. Description Two Channel Video Capture Card