What is the impact of supporting video formats?

Amplifier or echo wall, the top grade will be marked as supporting 4K / 60p (4: 4: 4), support the terms HDR, HLG, Dolby Vision, BT2020, as a speaker, what is the use of supporting these? ? In fact, the problem lies in the HDMI first-line audio and video signals. If these video specifications are not supported, it is very likely that the video signal of the video source cannot be passed to the TV, that is, the video pass-through PassThrough.

Traditional AV amplifiers are connected to the video source HDMI IN, the display device is connected to the HDMI OUT, the amplifier leaves the audio to decode, and the video is transmitted to the display device intact, so it must support the corresponding video protocol to connect successfully.
video format on AV amplifier

Like my old Onkyo 605, HDMI version 1.3 does not support 1080P3D and later 4K, so it cannot be used in series. The solution is to use a dual HDMI output signal source, or use fiber optic connection to downgrade audio specifications, or Use a splitter or eliminate it.

Because of this, in 2020, it is best to choose a sound wall or AV amplifier that supports the above video specifications, which can be used for one year.

After sieving the product, I found that there are still a lot of HDMI OUT ARC. Compared with optical fiber, it does not add new decoding capabilities, but the advantage is that it supports HDMI CEC and can be turned on and off with the TV. This function is still very important, and does not Considering the straight-through video specification, the DTS decoding capability is castrated together, because streaming media has never seen the shadow of the DTS audio track, so this design is normal.
 
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