2019-06-25, 12:05
So weird, i've been waiting for a raspberry pi with 4k support for a year. So i went ahead and bought an s912 box. Just a mere DAY LATER this drops lmao
(2019-06-25, 10:23)Klojum Wrote:(2019-06-25, 09:21)solamnic Wrote: LOLOLOLOLOLOLOLOLOLOLOL
What else do you expect with only a limited number of developers, and the rest of the people picking their noses on the sidelines.
(2019-06-25, 09:21)solamnic Wrote: "4K and HDR support expected on late 2020 - beginning of 2021...."
LOLOLOLOLOLOLOLOLOLOLOL
(2019-06-25, 10:23)Klojum Wrote:I am sorry but when something is advertised that supports 4K and HDR, i expect at least that there is software to support it.(2019-06-25, 09:21)solamnic Wrote: LOLOLOLOLOLOLOLOLOLOLOL
What else do you expect with only a limited number of developers, and the rest of the people picking their noses on the sidelines.
(2019-06-25, 18:54)solamnic Wrote: I am sorry but when something is advertised that supports 4K and HDR, i expect at least that there is software to support it.
(2019-06-27, 10:24)noggin Wrote: Just to update. If you are running LibreElec and want to try 4K/50-60 (aka 2160p50-60) video output you need to edit your config.txt to include 'hdmi_enable_4k=1', without this line you will be limited to 2160p30 and below in 4K.
Also, my Pi 4B is currently outputting RGB 8-bit in 2160p60 modes, which requires a higher bandwidth HDMI 2.0 input. If your TV only supports 4:2:0 2160p50-60 inputs (as is particularly common with UHD SDR TVs sold in the early days) you won't be able to get 2160p50-60. In a thread over at the Pi Forums there is a suggestion that 4:4:4/RGB and 4:2:2 are supported but 4:2:0 isn't currently (as it requires more processing for vertical subsampling).
This may mean that the only mode supported for HDR at 2160p50-60 will be 4:2:2 12-bit (which can carry 10-bits padded - there isn't an HDMI 2.0 4:2:2 10-bit mode in the spec) For 2160p30 and below 4:4:4/RGB are valid specs for 8-16 bit output, with 4:2:2 also supported for 12-bit (same as 2160p50-60) (4:2:0 isn't a valid output spec for 2160p30 and below)
(2160p50-60 4:2:0 8-bit was often the only HDMI 2.0 mode supported on early SDR UHD TVs as it didn't require the higher HDMI 2.0 bandwidth hardware and could use HDMI 1.4b bandwidth chipsets. This is how some manufacturers were able to offer an 'HDMI 2.0 upgrade' via a firmware update...)
The LibreElec image has a lot of rough edges at the moment, as would be expected for an Alpha, and this is only 3 days after launch. So far in my tests 1080i h.264 isn't deinterlacing well, the GUI tearing is pretty noticeable, I'm not seeing HDMI 5.1/7.1 PCM audio output for FLAC multichannel stuff (Dolby Digital is bitstreaming OK) but HEVC hardware playback is good. I also noticed that both LibreElec and Raspbian required HDMI to be used for reliable single display working. Using HDMI 1 on its own didn't seem reliable.
(2019-06-27, 16:04)C.O.D. Wrote: It would be too nice if someone with a Raspberry 4 could check if it's playing 1080p within the Netflix addon.
Many thanks in advance...
(2019-06-27, 16:04)C.O.D. Wrote: It would be too nice if someone with a Raspberry 4 could check if it's playing 1080p within the Netflix addon.It's all very early days. Initial testing was done with LibreELEC, sw decoding had a 2/3rd impact.