X-Git-Url: http://shamusworld.gotdns.org/cgi-bin/gitweb.cgi?a=blobdiff_plain;f=_manual%2F19_synchronization%2F03_timecode-generators-and-slaves.html;h=08f0bb255de9b01306e9e18377ed0d1f257d73da;hb=876124925eb2b43064a58dcc118e685ac876514c;hp=33a9141440472eb5f336170c7900a4c898075531;hpb=27ff2f09a183a7cd1d105bdd73a91d0e29e0b766;p=ardour-manual-diverged diff --git a/_manual/19_synchronization/03_timecode-generators-and-slaves.html b/_manual/19_synchronization/03_timecode-generators-and-slaves.html index 33a9141..08f0bb2 100644 --- a/_manual/19_synchronization/03_timecode-generators-and-slaves.html +++ b/_manual/19_synchronization/03_timecode-generators-and-slaves.html @@ -39,7 +39,7 @@ Each Ardour session has a specific timecode frames-per-second setting which is c

-Note that some timecode formats are limited to a subset of Ardour's available fps. e.g. MTC is limited to 24, 25, 29.97 and 30 fps.

+Note that some timecode formats are limited to a subset of Ardour's available fps. e.g. MTC is limited to 24, 25, 29.97 and 30 fps.

@@ -135,7 +135,7 @@ An edge case can also occur with 29.97 drop-frame timecode. While the SMPTE 12M-

-When enabled the external timecode source is assumed to use 29.970000 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 yields zero timecode drift. +When enabled the external timecode source is assumed to use 29.970000 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 yields zero timecode drift.

@@ -183,7 +183,7 @@ The incoming timecode signal needs to arrive at the ardour:LTC-in p

-Ardour's transport is aligned to LTC-frame start/end positions according to the SMPTE 12M-1999 spec which means that the first bit of an LTC-Frame is aligned to different Lines of a Video-Frame, depending on the TV standard used. Only for Film (24fps) does the LTC-Frame directly match the video Frame boundaries. +Ardour's transport is aligned to LTC-frame start/end positions according to the SMPTE 12M-1999 spec which means that the first bit of an LTC-Frame is aligned to different Lines of a Video-Frame, depending on the TV standard used. Only for Film (24fps) does the LTC-Frame directly match the video Frame boundaries.

LTC frame alignment