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Chapter 3, Connecting External Devices to Matrox VS4
Available Matrox VS4 connections
The Matrox VS4 card offers four SDI inputs. Each input supports HD/SD video
and up to eight channels of embedded audio.
¦NoteReferences to the VS4 card apply to both VS4 and VS4 Pro cards.
You can install up to two Matrox VS4 cards in the same system (see “Selecting
your primary VS4 card” on page 93). In a two-card system, VS4 input
availability is as follows:
• VS4Recorder Pro When using VS4 with the VS4Recorder Pro
application, recording is supported on the four inputs of the VS4 card
selected as the primary.
• Telestream Wirecast When using VS4 with Telestream Wirecast, all eight
VS4 inputs can be used as input devices to feed live video and audio to
Telestream Wirecast for streaming. ISO recording is supported on the four
inputs of the primary VS4.
• StudioCoast vMix When using VS4 with StudioCoast vMix, the four
inputs of the primary VS4 can be used as input devices to feed live video and
audio to StudioCoast vMix for streaming and ISO recording.
Supported input formats
This section lists the video formats that are supported on the Matrox VS4 inputs.
When connecting sources with different video formats, the sources must have
compatible frame rates. For example, 1080i at 29.97 fps and 720p at 59.94 fps, or
1080i at 25 fps and 720p at 50 fps. The table below shows the supported video
input formats grouped by compatible frame rates.
¦NoteIf using VS4 with Telestream Wirecast for streaming, you can use the
scaling options available in Wirecast to scale the VS4 video input. Matrox VS4
does not support video input scaling for recording.
• 720×480 at 29.97 fps
(NTSC) 4:3
• 720×480 at 29.97 fps
(NTSC) 16:9
• 720p at 59.94 fps
• 1080i at 29.97 fps
• 1080PsF at 23.98 fps
• 1080PsF at 29.97 fps
• 1080p at 23.98 fps
• 1080p at 29.97 fps
• 720×576 at 25 fps
(PAL) 4:3
• 720×576 at 25 fps
(PAL) 16:9
• 720p at 50 fps
• 1080i at 25 fps
• 1080PsF at 25 fps
• 1080p at 25 fps
• 1080PsF at 24 fps
• 1080p at 24 fps
• 1080p at 30 fps
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