X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=_manual%2F19_synchronization%2F04_overview-of-timecode-related-settings.html;h=03c69456a0900febbee254b0203b523c97f33c8b;hb=26d592b95119669e5121a4f34862ded1e9a6915e;hp=c9e486a0ef955e9d180aaa394ccfda463abddff1;hpb=946a7ce5099643c412239eb4250d8e1368572f02;p=ardour-manual-diverged diff --git a/_manual/19_synchronization/04_overview-of-timecode-related-settings.html b/_manual/19_synchronization/04_overview-of-timecode-related-settings.html index c9e486a..03c6945 100644 --- a/_manual/19_synchronization/04_overview-of-timecode-related-settings.html +++ b/_manual/19_synchronization/04_overview-of-timecode-related-settings.html @@ -4,45 +4,105 @@ title: Overview of all Timecode related settings menu_title: Overview of Timecode settings --- -

Accessing the Settings and Preferences

-

-Timecode related settings are accessed from the menu: + Timecode settings are accessed from the menu in three places:

- -

Timecode Settings

-

Thes settings are session specific:

- - +
+
Timecode frames-per-second
+
+ Configure timecode frames-per-second (23.976, 24, 24.975, 25, 29.97, + 29.97 drop, 30, 30 drop, 59.94, 60). Note that all fractional + framerates are actually fps*(1000.0/1001.0). +
+
Pull up/down
+
+ Video pull-up modes change the effective samplerate of Ardour to + allow for changing a film soundtrack from one frame rate to another. + See Telecine +
+
Slave Timecode offset
+
+ The specified offset is added to the received timecode (MTC or + LTC). +
+
Timecode Generator offset
+
+ Specify an offset which is added to the generated timecode (so far only LTC). +
+
JACK Time Master
+
+ Provide Bar|Beat|Tick and other information to JACK. +
+
+

These settings are session specific.

Transport Preferences

- - +
+
External timecode source
+
+ Select timecode source: JACK, LTC, MTC, MIDI Clock +
+
Match session video frame rate to external timecode
+
+ This option controls the value of the video frame rate while + chasing an external timecode source. When enabled, the + session video frame rate will be changed to match that of the selected + external timecode source. When disabled, the session video frame rate + will not be changed to match that of the selected external timecode + source. Instead the frame rate indication in the main clock will flash + red and Ardour will convert between the external timecode standard and + the session standard. +
+
External timecode is sync locked
+
+ Indicates that the selected external timecode source shares sync (Black + & Burst, Wordclock, etc) with the audio interface. +
+
Lock to 29.9700 fps instead of 30000/1001
+
+ The external timecode source is assumed to use 29.97 fps instead of + 30000/1001. SMPTE 12M-1999 specifies 29.97df as 30000/1001. The spec + further mentions that drop-frame timecode has an accumulated error of -86ms + over a 24-hour period. Drop-frame timecode would compensate exactly for a + NTSC color frame rate of 30 * 0.9990 (ie 29.970000). That is not the actual + rate. However, some vendors use that rate — despite it being against + the specs — because the variant of using exactly 29.97 fps has zero + timecode drift. +
+
LTC incoming port
+
+ Offers a session agnostic way to retain the LTC port connection. +
+
Enable LTC generator
+
Does just what it says.
+
Send LTC while stopped
+
+ Enable to continue to send LTC information even when the transport + (playhead) is not moving. This mode is intended to drive analog tape + machines which unspool the tape if no LTC timecode is received. +
+
LTC generator level
+
+ Specify the Peak Volume of the generated LTC signal in dbFS. A good value + is 0 dBu (which is -18 dbFS in an EBU calibrated system). +
+
+

These settings are common to all sessions.

MIDI Preferences

- +
+
Send MIDI Timecode
Enable MTC generator
+
Send MIDI Clock
Enable MIDI Clock generator
+
+

These settings are also common to all sessions.