4k Video starts black

Single Board Computers Odroid N2/N2Plus/C4
1

I have a Epson TW9400 connected to my Odroid N2 running on CoreElec 9.2.2. The projector is a 4k lens shift projector.

Whenever I watch any 1080p movie, video and audio start quite immediately after pressing the play button. But when I start with a 4k, audio starts, video stays black for about 4 to 5 seconds until a picture is visible.

Is this a projector thing or is there any setting in CoreElec that I might have forgot to choose?

Thx in advance
Nathan

2

HDR turning on or the resolution/refresh rate changing.
The same thing would happen when you stop playing the video.

3

So behaviour is as expected?

4

Did you set “Delay after change of refresh rate” in Display Settings to off ?

5

Yes, it is set to off.

6

Yes. It takes time for the projector to change the modes. Even if you turn off refresh rate matching, HDR mode has to be changed which takes time.

7

If you set it to on, your problem will go away (meaning that you will get no audio without video). Set it to 4-5 seconds, then the playback will start only after the display has set the correct parameters.

8

Hm yes, I already thought so, because the projector makes “special” noises which might come from the lens shifting mechanism.

9

Oh yes, quite a good idea… a shame that I haven’t thought of it earlier… :slight_smile: