Enable --vo=gpu-next Support on Darwin to Reshape Dolby Vision Content

[shivabohemian]

In the latest version of mpv 0.38, the issue with Vulkan instance creation on macOS has been fixed (the pr). Here, we can use --vo=gpu-next to support content reshaping for Dolby Vision (you can use test videos here). I noticed that the darwin builds of the media-kit package are using an older version of mpv and Vulkan is not enabled. So, do we need to update libmpv-darwin-build?

[birros]

See media-kit/libmpv-darwin-build#28.

Unfortunately, I don't think libmpv uses Vulkan, but only OpenGL like previous versions. It seems to me that Vulkan is only for direct rendering in a native view.

To use Vulkan in media-kit, we need to :

• Wait for libmpv to replace OpenGL with Vulkan
• Or use a Platform View from Flutter, but I don't think this API is yet stable for macOS, and that it would be as efficient

[shivabohemian]

All right. It looks like gpu-next is still not supported in the rendering API (mpv-player/mpv#10810). So, as it stands, it appears that Dolby Vision tone mapping is also not properly supported on the medit-kit.