Function pixel_buffer_from_vec 

pub fn pixel_buffer_from_vec(
    data: Vec<u8>,
    width: u32,
    height: u32,
    format: PixelFormat,
    primaries: ColorPrimaries,
    transfer: TransferFunction,
) -> Result<PixelBuffer>

Wrap an existing Vec<u8> as a PixelBuffer, validating ultrahdr-core’s dimension caps and format subset.