HDR encoding

[mparade]

Can I use Hybrid with DGDecNV for decoding 10 bit HEVC UHD HDR (DGDecNV is compatible with HEVC by now)?

No, Hybrid doesn't support decoding anything above 2048x2048 atm. through DGDecNV.
(VP7 cards should be able to decode HEVC Main and Main 10 profile; VP8 cards should be able to handle HEVC Main 12; VP8 cards should also support 8k resolutions iirc.)
-> might come in the future isn't supported atm. by Hybrid (probably when I get my hands on a newer card, atm. I use a Geforce GTX 980 ti, which doesn't support hevc)

Is it possible to import 10 bit HEVC sources in UHD resolution?

Yes, through libavsource.

Thanks. I have here Geforce GTX 1060. Project crashed. Why may Hybrid leave "--input -" parameter in the command line?

UHD 12-bit HDR encoding just have started using all the infos media info reported after importing the source!!!!