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Low Earth Orbit
Pro AV, Staging, & Rigging
Switching for video
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<blockquote data-quote="Brad Weber" data-source="post: 88626" data-attributes="member: 114"><p>Re: Switching for video</p><p></p><p>One of the factors may be how 'cleanly' you want or expect it to switch. A simple HDMI switch may have to reestablish the HDMI 'handshake' every time you switch sources, which may also result in the projector having to resync to a different resolution or scan/refresh rate and all that can take several seconds (or longer) during which you get no image. More advanced seamless switchers with EDID management may allow much quicker and cleaner switches with a fixed resolution and scan/refresh rate output to the projector but you will pay a price for that added functionality.</p><p></p><p>The satellite receiver and MacBook may also introduce HDCP considerations. With a single output to a single display device that may not be as complex but there may still be considerations in how the switcher passes through or other handles HDCP.</p><p></p><p>One of the biggest 'gotchas' with HDCP is that the standards require enabling it when called for by the content but do no prohibit enabling it at other times. Thus if it is considered easier or better for a device to enable HDCP whenever connected to a HDCP compliant input or even at all times rather than only when the content flags it that is acceptable within the standards, although with sometimes unexpected consequences. In this case a switcher that is HDCP compliant feeding a projector that is not might trigger HDCP for the satellite receiver or Mac and then not allow the projector to display that signal.</p></blockquote><p></p>
[QUOTE="Brad Weber, post: 88626, member: 114"] Re: Switching for video One of the factors may be how 'cleanly' you want or expect it to switch. A simple HDMI switch may have to reestablish the HDMI 'handshake' every time you switch sources, which may also result in the projector having to resync to a different resolution or scan/refresh rate and all that can take several seconds (or longer) during which you get no image. More advanced seamless switchers with EDID management may allow much quicker and cleaner switches with a fixed resolution and scan/refresh rate output to the projector but you will pay a price for that added functionality. The satellite receiver and MacBook may also introduce HDCP considerations. With a single output to a single display device that may not be as complex but there may still be considerations in how the switcher passes through or other handles HDCP. One of the biggest 'gotchas' with HDCP is that the standards require enabling it when called for by the content but do no prohibit enabling it at other times. Thus if it is considered easier or better for a device to enable HDCP whenever connected to a HDCP compliant input or even at all times rather than only when the content flags it that is acceptable within the standards, although with sometimes unexpected consequences. In this case a switcher that is HDCP compliant feeding a projector that is not might trigger HDCP for the satellite receiver or Mac and then not allow the projector to display that signal. [/QUOTE]
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