updated README

1 files changed, 31 insertions, 13 deletions

diff --git a/README b/README
index ad920e3..99ec55b 100644
--- a/README
+++ b/README
@@ -35,7 +35,7 @@ Requirements:
   - freetype2 for GPU accelerated text drawing
   - valid MPEG-2 license when watching MPEG-2 streams
   - Raspberry Pi userland libraries: https://github.com/raspberrypi/userland
-  - Raspberry Pi firmware from 2015/01/18 or newer
+  - Raspberry Pi firmware version of 2015/01/18 or newer
   
 Install:
 
@@ -62,15 +62,33 @@ Usage:
   or change any video mode settings. So it's the user's choice, what's being 
   displayed when no video is shown, e.g. during channel switches or for radio
   channels.
-  
-  The user also needs to select an appropriate video mode by editing config.txt:
-  http://www.raspberrypi.org/documentation/configuration/config-txt.md
-  
-  For best performance, choose a mode which fits the desired video material,
-  especially regarding frame rate.
-  
+
+Options:
+
+  -d, --disable-osd  Disables creation of OSD layer and prevents the plugin of
+                     allocating any OSD related resources. If set, VDR's dummy
+                     OSD is used, when selecting rpihddevice as primary device.
+
 Plugin-Setup:
 
+  Resolution: Set video resolution. Possible values are: "default",
+  "follow video", "720x480", "720x576", "1280x720", "1920x1080"
+
+  Frame Rate: Set video frame rate. Possible values are: "default",
+  "follow video", "24p", "25p", "30p", "50i", "50p", "60i", "60p"
+
+  When set to "default", the resolution/frame rate will not be changed and the
+  plugin keeps the current setting of the framebuffer, normally set by the mode
+  number in /boot/config.txt or changed with 'tvservice'. To let the plugin
+  automatically set a value matching the current video stream, choose
+  "follow video". In general, video setting are only applied if both, resolution
+  and frame rate, fits to a video mode supported by the connected device,
+  indicated by its EDID.
+
+  EDID information can by overridden with various settings in /boot/config.txt,
+  see the official documentation for further information:
+  https://www.raspberrypi.org/documentation/configuration/config-txt.md
+
   Video Framing: Determines how the video frame is displayed on the screen in
   case the aspect ratio differs. "box" and "cut" will preserve the video's
   aspect ratio, while "box" (often called "letter box", however "pillar box" is
@@ -83,11 +101,11 @@ Plugin-Setup:
   Audio Port: Set the audio output port to "analog" or "HDMI". When set to
   analog out, multi channel audio is sampled down to stereo.
   
-  Digital Audio Pass-Through: Enabled pass through of compressed digital audio
-  if supported by the receiver.
-  
-  Ignore Audio EDID: In case the HDMI peer reports false audio EDID information,
-  they can be ignored with this option.
+  Digital Audio Format: Specify the audio format when using the HDMI port as
+  output. If set to "pass through", (E)AC-3 and DTS audio can be decoded by the
+  connected HDMI device, if EDID indicates specific codec support. For local
+  decoding, select "mutli channel PCM" or "Stereo PCM" if additional stereo
+  dowmix of mutli channel audio is desired.
   
   Use GPU accelerated OSD: Use GPU capabilities to draw the on screen display.
   Disable acceleration in case of OSD problems to use VDR's internal rendering