Vision Capture Cards
Vision Capture Cards
Professional Video and Audio Capture Cards
Datapath have developed a sizeable portfolio of capture cards providing HD capture or HDMI capture capabilites as well as
a number of high resolution video capture modes including 3G-SDI, HD-SDI and dual-link DVI. Whether you are looking for a
video capture solution for streaming, recording or presentation applications we’ll have a solution to suit your needs. With
requirements for high quality capture cards continously increasing, Datapath is responding by offering new improved
innovative products at regular intervals.
Our extensive product range provides solutions for many wide and varied applications including: display wall controller
hardware and software, multi-screen desktop applications, multiple video overlay window applications, RGB/ VGA capture
hardware and RGB streaming.
VisionHD4
VisionAV-SDI
•
HDMI / DVI / RGB / YPbPr video
capture
•
•
Maximum resolution up to
4096 x 2048, at 165 MHz Pixel
Clock (Digital modes) or 170 Msps in analog modes.
•
•
HDMI audio capture with streaming from each DVI
Channel
•
~800 MB/s bandwidth per capture processor, 3.2GB/s
for the card
•
•
VisionAV-HD
•
•
•
•
Triple channel PCI Express
capture card
Direct DMA to graphics memory
of third party graphics cards
HDMI embedded audio capture
and streaming
PAL, NTSC, SECAM up to 720 x 576 @16 Bit colour
Triple channel PCI Express
capture card
Balanced (XLR) and Unbalanced
(RCA) audio capture from
optional audio module
Low input to 0utput capture latency
SDI embedded audio capture and streaming
VisionAV
•
Dual channel video HD/HDMI
and Composite Video
•
Flexible audio capture - Balanced
(XLR and Unbalanced (RCA) from
optional module
•
HDMI audio through HD Video Channel
VisionRGB-E2S
VisionRGB-E1S
•
Single channel RGB/DVI/HD
capture card
•
Component HD up to 1080p at
60 frames per second
•
4 lane PCI Express interface with
maximum data rate of
650MB/sec
•
DVI up to 1920 x 1200\VGA up
to 2048 x 1536
•
HDMI up to 1080p
•
Maximum analog RGB capture resolution of 2048 x
1536 x 24bit
•
Maximum data rate 650MB/sec
•
Maximum DVI capture resolution of 1920 x 1200 x
24bit and 1920 x 1080 x 32bit at 60Hz
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VisionSD4+1S
•
Four channel SD video + one
channel RGB/DVI/HD capture
cards
•
Data transfer at 650MB/sec
•
Max analog RGB capture
resolution of 2048 x 1536 x 24bit
•
Max DVI capture resolution of 1920 x 1200 x 24bit
VisionSD8
•
8 composite/ S-video inputs
•
Maximum video capture
resolution 720 x 576
•
Supports de-interlacing
•
Data transfer at 480MB/s
VisionDVI-DL
VisionSDI2
•
Dual channel PCI Express
3G/ HD/ SD capture cards
•
4 lane PCI Express bus with
max data rate of 650MB/sec
•
Supports all 3G/ HD/ SD video
modes up to 1080p 60Hz
•
Long range, single co-ax cable support. (150 metres
capturing 1080p, 300 metres capturing SD)
•
Support for 330MHz pixel clock
and a maximum canvas of
4k x 4k
•
HD video capture for all
progressive and interlaced
DVI/HDMI modes
•
Captures Quad-HD Digital Cinema modes at
24/25/30fps
•
High quality scaling (7 x 3 Polyphase filter)
Vision Range Features
High Performance Data Transfer (DMA)
Gets data to its destination quickly, allows high frame rate and pixel depths to be used. Performance is measured in Mega Bytes
per second (MB/s). The throughput in frames per second is dependent on pixel depth, video capture resolution and any wider
system bottlenecks.
Datapath MultiStream Technology
Open and independently control multiple instances of the same capture from a single input source. MultiStream functionality is
made possible through low level hardware control available only in the Vision capture card range. MultiStream technology
provides DMA support for 16 independent capture clients, each with different capture size (scale factors), frame rates, pixel
depths and cropping rectangles. MultiStream allows ‘Preview’, ‘Capture’ and ‘Stream’ clients with different bandwidth
requirements to be supported from a single input.
Triple Buffered Hardware Frame Store
Motion perfect image capture. Three memory buffers receive frames sequentially 1,2,3,1,2,3... Frames are read out from the
last completed and therefore latest buffer. Triple buffering ensures pixel data is not written and read from the same buffer at
the same time avoiding ‘image tearing’. A LiveStream client will function differently, this is described in the LiveStream section.
Powerful Hardware Scaler
Adjust the incoming video size to your requirements. A captured frame can be scaled up or down within a 4K x 4K range using
a high quality polyphase filter. The scaling process reduces overall DMA bandwidth allowing un-scaled data to be up-scaled by
the destination device under certain circumstances. Any of the 16
MultiStream input clients can be up or down scaled independently.
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Datapath LiveStream Technology
Low latency video and audio capture minimizes the delay prior to post processing. Using various APIs including RGBEasy,
Kernel Streaming, DirectX and Open GL, low latency peer-to-peer DMA operations are achieved using a proprietary technology
allowing capture lines (not frames) to be transferred as they arrive into the frame store. The process reduces the DMA transfer
time from a full frame time to a single line time. Datapath LiveStream technology is available for selection if and when required,
only a single client per input can be considered for LiveStream. Using Datapath LiveStream technology, clients 2-16 will operate
as usual in a ‘round robin’ transfer schedule immediately after the LiveStream client transfer. If the LiveStream client is
disabled, all clients will DMA after the completed frame has finished capturing into the frame store. The capture card transfers
data to system memory or off-screen memory on the graphics device, depending on the system and how the software is
written.
AMD DirectGMA & NVIDIA GPUDirect ™ for Video
Reduce the capture delay seen on the monitor. Low latency transfer interfacing for third party graphic device vendors. See
Sample5 of the RGBEasy SDK for working examples of Datapath Vision captures into these technologies using the OpenGL API.
AMD DirectGMA technology in conjunction with the Vision capture card produces a 3 frame latency, input to output rate. This
rate includes capture, transfer and display. A ‘peer to peer’ DMA is setup and executed in this model. NVIDIA GPUDirect™
technology in conjunction with the Vision capture card produces 5 frames latency, input to output rate. This rate includes
capture, transfer and display. A System Memory DMA is setup and executed in this model.
Note that in practice the above technologies will post process the captured data and incur further latency on the input to
output stream time.
Common Hardware Buffer Time Stamp
Synchronize video and audio data across all capture cards and inputs. The Datapath hardware timestamp uses a common clock
for both video and audio buffers.
Hardware time stamping provides precise knowledge of when a frame is captured, allowing multiple buffers from different
input sources to be synchronized. The start time stamp corresponds to the arrival of the first pixel of a field or frame within the
Vision hardware. The hardware timer is synchronized with the systems high precision performance counter
(KeyQueryPerformanceCounter) across all capture inputs in a system, regardless of whether they are from different physical
capture cards. The units of the timestamp are in 100ns ‘ticks’ with a resolution of 100ms. Time stamping functionality can be
adapted for high resolution frame stitching across capture cards, stereoscopic interleaving and input signal calibration.
The audio buffer stamp is represented by the first stereo pair sample captured into the hardware audio store. The common
video and audio time stamp allows precision lip-sync streaming when the Datapath clock is used for rendering.
Windows & Linux Single Driver Model
Single installation package for all Vision capture cards and operating systems. The Vision range of video capture cards listed
above use a single driver, application and interface model. A single Windows installation package is required for all capture
cards and operating systems covering x86 and x64 bit, Windows XP to Windows 8. Microsoft Windows interfaces include Kernel
Streaming, COM, DirectShow, MMAPI and WASAPI. A private Windows RGBEasy interface allows finer control of Datapath
hardware when required. A Video for Linux installation including support for the G-Streamer application is available for
downloaded at the Datapath website. Card model dependent features will
return an appropriate error when not supported.
www.datapath.co.uk | sales@datapath.co.uk | (+44) (0) 1332 29444
Comprehensive Software Development Kits
Take advantage of the Vision features easily and quickly. SDK features described above are documented by sample applications
found in the Datapath SDK bundle including RGBEasy, DirectX, DirectShow, MMAPI, WASAPI, OpenGL and .Net source code.
The Vision SDKs can be found either within the Vision stand alone installation or as a separate downloaded from the Datapath
website.
HDCP Capture onto Datapath Graphics Cards
View encrypted video content. Support for VisionAV range captures of HDCP sources onto ImageDP4 graphic card only.
Vision Input Matrix
CAPTURE CARDS
VISION cards
RGB-E1S
RGB-E2S
SD4+1S
VISIONAV cards
SD8
SDI2
DVI-DL
F/ H
B
HD
SDI
HD4
INPUTS
Total Inputs
1
2
5
Total Clients
16
32
32
8
2
1
2
2
3
3
4
16
16
32
32
64
MULTISTREAM CLIENTS
16
32
16
HD INPUTS
RGB
1
2
1
1
1
2
1
4
VGA
1
2
1
1
1
2
1
4
DVI
1
2
1
1
1
2
1
4
DVI-DL
1
HDMI
1*
2*
1*
1
1
2
1
4
Component
1
2
1
1
1
2
1
4
HD-SDI
2
1
3G-SDI
2
1
Total HD
1
2
1
2
1
1
2
2
1
1
1
1
4
SD INPUTS
Composite
4
8
S-Video
4
8
SD-SDI
2
1
SDI BNC
2
1
Total SD
4
8
2
1
1
1
2
1
1
2
1
1
**
1
1
1
**
1
1
AUDIO INPUTS
HDMI***
XLR
RCA
or
SDI***
2
Total Audio
2
4
1
2
1
3
3
4
800
800
1.6 GB/s
1.6 GB/s 3.2GB/s
PROCESSING
DMA Bandwidth 650
650
650
480
650
MB/s
*
Requires DVI backwards compatability of source
** Audio module required
*** Digital audio embedded with the video
www.datapath.co.uk | sales@datapath.co.uk | (+44) (0) 1332 294441
650
total
total
total
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