X-Git-Url: https://git.sesse.net/?a=blobdiff_plain;f=hdmisdi.rst;h=a04c62ba3d09336680d80acb5d6936a2f75e90a8;hb=HEAD;hp=f6f032cf48a29df3c27cb9e6a4b8359a2242d6d2;hpb=98d5e14a2f775ba38182cf43c0623d3a3aaf2833;p=nageru-docs

diff --git a/hdmisdi.rst b/hdmisdi.rst
index f6f032c..a04c62b 100644
--- a/hdmisdi.rst
+++ b/hdmisdi.rst
@@ -8,14 +8,14 @@ the stream on another PC, but for many uses, the end-to-end latency is
 too high, and you might not want to involve a full extra PC just for this
 anyway.
 
-Thus, since 1.5.0, Nageru supports using a spare output card for HDMI/SDI
+Thus, Nageru supports using a spare output card for HDMI/SDI
 output, turning it into a simple, reasonably low-latency audio/video switcher.
 
 
 Setting up HDMI/SDI output
 --------------------------
 
-Turning on HDMI/SDI output is simple; just right-click on the live view and
+To turn on HDMI/SDI output, right-click on the live view and
 select the output card. (Equivalently, you can access the same functionality
 from the *Video* menu in the regular menu bar, or you can give the
 *--output-card=* parameter on the command line.) Currently, this is supported
@@ -26,11 +26,23 @@ keep running just as before.
 A video mode will automatically be picked for you, favoring 59.94 fps if possible,
 but you can change the mode on-the-fly to something else if you'd like,
 as long as the resolution matches with what you've set up at program start.
-Note that whenever HDMI/SDI output is active, the output card will be the
+
+
+Unsynchronized HDMI/SDI output
+------------------------------
+
+By default, whenever HDMI/SDI output is active, the output card will be the
 master clock; you cannot change it to any of the input cards. This also means
 that the frame rate you choose here will determine the frame rate for the
 stream.
 
+In Nageru 2.1.0 or newer, you can use the flag --output-card-unsynchronized
+to counteract this (there is currently no way to do it from the GUI).
+This is for if you want just a monitor output without synchronizing
+your entire stream chain to the output card (ie., you want to keep
+some other camera as the master). Sound support is untested, and is
+probably going to crackle a fair bit.
+
 
 A note on latency
 -----------------
@@ -171,7 +183,7 @@ Measuring latency
 
 In order to optimize latency, it can be useful to measure it, but for most
 people, it's hard to measure delays precisely enough to distinguish reliably
-between e.g. 70 and 80 milliseconds by eye alone. Nageru gives you some simple
+between e.g. 70 and 80 milliseconds by eye alone. Nageru gives you some
 tools that will help.
 
 The most direct is the flag *--print-video-latency*. This samples, for every