Sebsky Tools overview
Sebsky Tools consists of five utilities, aimed at making Apple Computers Final Cut Pro (FCP) and Avids Media and Film Composer (Avid) integrate better: ale2fcp, fcp2ale, Batch Add TC, TC Player and bwf2qt.
ale2fcp and fcp2ale lets you convert batch lists/ALE shot logs between the two systems.
Batch Add TC lets you automatically add timecode tracks to QuickTime movies exported from Avid.
TC Player lets you view QuickTime movies and add and delete timecode tracks manually.
bwf2qt lets you import Broadcast Wave Format (bwf) audio files into FCP.

Video Standards and timecode
Sebsky Tools work with three Video Standards: PAL, NTSC and 24 fps. Converting timecodes from NTSC to 24 fps in FCP batch lists is possible, just as it is possible to add a 24 fps based timecode track to a QuickTime file with data taken from an NTSC ALE shot log. NOTE: It is currently NOT possible to convert PAL timecode into 24 fps timecode.

The conversion of NTSC timecode to 24 fps uses this scheme:
 
NTSC frame number 24 fps frame number
00 00
01 01
02 02
03 02
04 03
05 04
06 05
07 06
08 06
09 07
10 08
11 09
12 10
13 10
14 11
15 12
16 13
17 14
18 14
19 15
20 16
21 17
22 18
23 18
24 19
25 20
26 21
27 22
28 22
29 23

This conversion is used in Batch Add TC and in ale2fcp.

It is possible to add a NTSC timecode to a 24 fps clip WITHOUT the conversion. However, FCP cannot recognize this timecode and will display the timecode as 00:00:00:00.