Odroid c2 - 1080p HDR To SDR (Tone Mapping?)

danmed · February 26, 2018 at 2:13 PM

HI all,

Say i have some 1080p HDR files.. is the Odroid C2 able to tone map (term?) these so they look nice on a non HDR TV?

Tim_Taylor · February 26, 2018 at 2:51 PM

You want to look HDR videos, played on odroid(no HDR support) connected to a non HDR TV in HDR quality ?

YMMD

danmed · February 26, 2018 at 3:45 PM

If you consider the environment i'm in...

I have 1 4k HDR TV, but 2 non 4K HDR Tv's.

the 4K Tv has a Vero 4K with OSMC.. full HDR support.. but the other 2 TV's are running Odroid C2's with LibreElec.

rather than keeping multiple copies of my media, i'd rather have 1.. So my question (i believe) still stands.

**The Coolest** · February 26, 2018 at 6:22 PM

~~You can't do that with an Odroid C2, as far as I know it uses S905 which doesn't support HEVC 10 bit decoding.~~

**kszaq** · February 26, 2018 at 6:24 PM

The Coolest S905 supports H.265 10bit hardware decoding, it doesn't support 10bit output.

**The Coolest** · February 26, 2018 at 7:02 PM

Thanks for the correction, got confused with the S812

blackie · February 27, 2018 at 12:50 PM

This is a very important issue for S905 models owners.

Number of HDR movies is growing, S905 models can play them, but they look bad - very bright and unnatural colors.

Please implement some HDR to SDR conversion to allow proper output of SDR signal, if possible. Thanks

**mmpp** · February 27, 2018 at 1:29 PM

As 10bit x265 HDR/SDR decoding is done completely in hardware, there is little to nothing that can be done in kodi or libreelec to change it.

The mapping is different if a S905X is used (I have both a S905 and S905X box on a non-hdr TV so I can compare), you might want to try one of these for your purpose.

danmed · March 15, 2018 at 11:42 AM

Sorry for the late reply, but ar eyou saying they look better on a s905x device than they do on an s905 device?

**The Coolest** · March 15, 2018 at 1:09 PM

I'm of the opinion that there's no real way to properly tone map HDR content to SDR.

Perhaps if you use a PC with MadVR, but even then the results aren't that great. It also depends a lot on your TV, and the ability to configure the tone mapping to suit your TV correctly. (which is non-existent, AFAIK, on these boxes)

If you want to play HDR content, you'd better get a HDR display and a player that supports HDR.