How Does HDMI Video Differ?
How does HDMI video differ?
Just because a receiver has the capability to connect HDMI sources does not mean that each receiver is the same. In fact, very few are similar at all. There are currently five separate ways that receivers handle HDMI signals and we will list them in degrees of technological advancement starting from the bottom up:1. HDMI video switching: Allows for top notch video passthrough. Only HDMI video inputs are output via the HDMI out. Audio has to be run separately using another connection like an optical or digital coaxial cable.
2. HDMI A/V switching: What comes in, must go out. Only HDMI inputs are output via the HDMI out. You must use multiple connections to the TV if you are using any other video connections like composite or component video but both audio and video will go over one cable.
3. HDMI upconversion: Makes life a little easier. All video connections, like composite video and component video are upconverted to HDMI but the resolution of the video signal does not improve.
4. HDMI upconversion with a de-interlacer: Progressive scan and ease of use. Everything is upconverted to HDMI like before but also put in progressive scan so your resolution is improved to 480p on all non-High Definition sources.
5. HDMI upconversion and upscaling: Nothing but the best. Every video source is upconverted to HDMI and non-High Definition sources are upscaled to make every video source either 720p/1080i or 1080p depending upon the receiver.
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