The Holy Grail of HDR10: new grabbers and P010

[awawa-dev]

Recently, grabbers offering the P010 format have started to appear on the market en masse, which until now was reserved for premium grabbers such as the Elgato HD60X, offering sensational color quality of captured HDR material. Theoretically, the grabber type should not affect the captured video because we receive it in a raw state in P010 stream, but we will verify this. The cost of these grabbers is about 25-40% of the cost of Elgato, more expensive than the ms2130, but they have a built-in HDMI splitter. However, do not expect miracles from such splitters, e.g. CEC support or recording with HDCP enabled or EDID modification for LLDV.

Continuation of the discussion from this thread: #896

PR adding P010 format support to HyperHDR for Windows and theoretically for Linux: #968

Known limitations:

• p010 format scales to 150% rigidly
• p010 format is generally not supported by Linux. Although UVC devices explicitly offer it, v4l2 ignores it because for some reason support for it has not been added in the last few years. Probably kernel needs to be patched and recompiled ... or maybe it wont work at all. For further research and testing.