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Excel Formula for adding Timecode

Posted on 2011-02-24
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Last Modified: 2012-06-27
Hi,
I need to add video timecodes.  I have a list of inpoints and corresponding durations, and I am trying to calculate the corresponding endpoints.
For example:

COL A             COL B             COL C
START            DURATION     END (This is the column to generate)
00:00:57:12      00:00:03:04      1:01:16
00:01:45:12      00:00:01:13      1:46:25

I found the following formula which would go in cell C3:
=TEXT(LEFT(B3,8)+LEFT(A3,8)+(RIGHT(A3,2)>RIGHT(B3,2))/86401,"m:ss")&TEXT(MOD(RIGHT(B3,2)+RIGHT(A3,2),30),"\:00")
However, it's not always right.  For example, the 'END'  1:01:16 above should really be 1:00:16.
The second one is correct.

Thanks so much for any help!

Evan
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Question by:EBrenner
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Expert Comment

by:barry houdini
ID: 34974160
Are these hours, minutes, seconds and frames with 30 frames per  second?

barry
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Author Comment

by:EBrenner
ID: 34974210
Sorry, they are:

HH:MM:SS:FF  (Where FF is frames)

Rate is 30 frames per second.  Under column C in my example, I left out HH:M but it won't let me edit now.
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Accepted Solution

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barry houdini earned 2000 total points
ID: 34974335
Try this version for C3 copied down following that method to give you a text value

=TEXT(LEFT(A3,8)+LEFT(B3,8)+(RIGHT(A3,2)+RIGHT(B3,2)>=30)/86400,"m:ss:")&TEXT(MOD(RIGHT(A3,2)+RIGHT(B3,2),30),"00")

or a shorter alternative which is actually a time value...(which excel views as h:mm:ss but you can treat as m:ss:ff)

=RIGHT(A3,8)+RIGHT(B3,8)+(SECOND(RIGHT(A3,8)+RIGHT(B3,8))>=30)/2880

you could easily convert the latter to text, too by wrapping in a TEXT function

see attached for both

regards, barry
26846078.xls
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Author Closing Comment

by:EBrenner
ID: 34974391
Amazing!  Thanks Barry!
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