Write some more basic Futatabi docs.

[nageru-docs] / hardware.rst

diff --git a/hardware.rst b/hardware.rst
index 15c4ac749abeb3aafef140186ebb2479615ad9fd..79057c0fad40b2e32d399345b271ea269eb27b6d 100644 (file)
--- a/hardware.rst
+++ b/hardware.rst
@@ -112,8 +112,8 @@ Video format conversion
 -----------------------
 
 If you have an input source with a different resolution than the native mode
 -----------------------
 
 If you have an input source with a different resolution than the native mode

-(currently locked to 720p; this will be configurable without recompiling
-in the future), Nageru will scale transparently for you using a Lanczos3
+(720p by default, but you can change this using the -w and -h command line
+parameters), Nageru will scale transparently for you using a Lanczos3

 filter (or rather, the :doc:`theme <theme>` will). This requires some extra GPU power,
 so if you can avoid it, use the native mode. Similarly, if you connect an
 interlaced input, Nageru will automatically deinterlace for you.
 filter (or rather, the :doc:`theme <theme>` will). This requires some extra GPU power,
 so if you can avoid it, use the native mode. Similarly, if you connect an
 interlaced input, Nageru will automatically deinterlace for you.


@@ -126,7 +126,14 @@ account for clock and jitter).
 
 Nageru works in 16-bit floating-point RGBA internally. High-quality conversion to and
 from subsampled Y'CbCr (typically 4:2:2 for inputs and 4:2:0 for outputs)
 
 Nageru works in 16-bit floating-point RGBA internally. High-quality conversion to and
 from subsampled Y'CbCr (typically 4:2:2 for inputs and 4:2:0 for outputs)

-is done transparently on the GPU.
+is done transparently on the GPU. Input and output is 8-bit Y'CbCr by default,
+but be aware that 8-bit Y'CbCr, however common, cannot capture the full color
+fidelity of 8-bit RGB (not to mention 10-bit RGB). If you have spare GPU power,
+you can enable 10-bit Y'CbCr input and output with --10-bit-input and
+--10-bit-output, respectively, although you should be aware that client
+support for 10-bit H.264 is very limited. Also, Quick Sync Video does not
+support 10-bit H.264 encoding, so in this case, the digital intermediate needs
+to be encoded in software.

 
 
 Performance tips
 
 
 Performance tips