I need some help with HDMI passthru and Apple TV 4K.
Equipment: LG oled 6e. Apple 4ktv. Brand new SP3. Apple TV set to 4K HDR. Chroma 4:2:2. Match content range & frame rate on. Switching from SDR to HDR and DV 30hz and back works seamlessly when the Apple TV is connected directly to the LG tv. It is quick and no flicker.
However passing through HDMI input on SP3 Results in a sporadic handshake and therefore, more often than not, no picture. Switching from a movie in SDR back to the HDR results in HDR logo appearing but a black screen. Sometimes just switching on the SP3 and Apple TV results in no handshake with LG tv. Dolby Vision 30hz actually works once the handshake is complete. BUT the only way to get the picture is to leave Apple TV on SP3 on and toggle the LG tv off then on. And this is not always a fix. It can take 5 minutes of fiddling with the sources and components to get the picture displaying on the LG tv. The picture is perfect when ithe SP3 completes the handshake but the SP3 HDMI board cannot seem to cope with changing range and frame rates. It almost seems too slow as the HDMI led indicator goes red then blue then red and again blue. Even switching the LG tv off and on can still result in no picture as the handshake fails. I have tried all 4 HDMI settings in the Setup. No real difference. And I’ve tried changing the Apple TV parameters. Nothing fixes this handshaking problem.
I wondered if anyone has a similar issue as I do. Any suggestions or help would be very much appreciated.
Otherwise I will have to use a splitter sending the video directly to the LG tv and the audio to the SP3 which if it actually even works, defeats the whole purpose of using the SP3 as an HDMI switcher.
I would imagine the SP4 would have the same HDMI board and since that is designed specifically for home theatre an Apple 4K tv would be quite a common video source used with that Processor.
HELP.
Howard