Turning on HDMI/SDI output is simple; just 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.) Currently, this is supported
+from the *Video* menu in the regular menu bar.) Currently, this is supported
for DeckLink cards only (PCI/Thunderbolt), as the precise output protocol for
the Intensity Shuttle cards is still unknown. The stream and recording will
keep running just as before.
The 4K series in this context include everything that have “4K” in their
names, plus the Mini Recorder, Duo 2 and Quad 2 devices.
-TODO: Write about queuing options. And latency measurements. And audio.
+Controlling latency
+...................
+
+Of the different sources of latency outlined in the previous section,
+the only one that is really under your control (short of buying faster
+or better hardware) is the input queue latency. By default, Nageru
+attempts to strike a balance between reducing latency and having to
+drop frames due to jitter; by looking at each queue's input length
+history, it attempts to find a “safe queue limit”, above which it
+can drop frames without risking underrun (which requires duplicating
+frames). However, if latency is more important to you than 100% smooth
+motion, you can override this by using the *--max-input-queue-frames=*
+flag; this is a hard limit on the number of frames that can be kept
+in the queue, on top of Nageru's own heuristics. It cannot be set lower
+than 1, or else all incoming frames would immediately get dropped
+on arrival.
+
+TODO: Write about output queuing options. And latency measurements. And audio.
TODO: Write something about time codes here.
projects / nageru-docs / blobdiff