# Film Frame Calculations

Copper Contributor

# Film Frame Calculations

I am trying to work out how to sum a film frame calculation.

For example:

17:40:45:07

12:02:34:17

05:54:28:19

these are hours:minutes:seconds:frames

24 frames makes a second in this scenario (alternatives are that 25 or 30 frames make a sec)

setting the custom cell to hh:mm:ss:ff doesn't work and it always seems to revert to the time and when I attempt a formula to sum the numbers it never works.  Any help would be greatly received!

16 Replies

# Re: Film Frame Calculations

Hi Pamela,

Could be array formula

`=SUMPRODUCT(IFERROR(LEFT(D2:D22,8)*1,0))+SUMPRODUCT(IFERROR(RIGHT(D2:D22,2)*1,0))*\$F\$2/24/60/60`

where number of frames is in F2

# Re: Film Frame Calculations

Hi Sergei,

Thanks for that formula - I've changed the sheet a bit and its not quite working so I'm wondering if you could have a look at this version?  Also I'm trying to point some of the figures into the tabs prior including adding up partial days so I've added in a line to calculate.  I managed to add a few things manually through a TC calculator I found online (https://current360.com/apps/timecode-calculator/tc.html) but it stops when it hits over 100 hours. Wasn't quite matching up.  Anything your able to shed a light on would be helpful.  Thanks in advance.

# Re: Film Frame Calculations

Hi Pamela,

If present result with frames formula will be more complicated

`=TEXT(SUMPRODUCT(IFERROR(LEFT(D3:D9,8)*1,0))+INT(SUMPRODUCT(IFERROR(RIGHT(D3:D9,2)*1,0))/\$F\$2)/24/60/60,"[hh]:mm:ss") & ":" & TEXT(INT((SUMPRODUCT(IFERROR(RIGHT(D3:D9,2)*1,0))/\$F\$2-INT(SUMPRODUCT(IFERROR(RIGHT(D3:D9,2)*1,0))/\$F\$2))*\$F\$2),"00")`

(array formula)

To sum only two values that's regular formula

`=TEXT(LEFT(H10,8)+LEFT(H27,8)+INT((RIGHT(H10,2)+RIGHT(H27,2))/\$F\$2)/24/60/60,"[hh]:mm:ss") & ":" & TEXT(INT(((RIGHT(H10,2)+RIGHT(H27,2))/\$F\$2-INT((RIGHT(H10,2)+RIGHT(H27,2))/\$F\$2))*\$F\$2),"00")`

In attached file there is a small difference with calculator you mentioned. In calculator if enter the time with frames like 20:42:16:10 it shows 20:42:16:11, i.e. adds one frame to each entered value. Don't know is that by design or bug.

In the attached file calculated results are on the right from your ones.

# Re: Film Frame Calculations

Hi Sergei,

the formula is extremely helpful for additions. What do I have to change in the formula for subtractions?

Example:

01:20:14:22 minus 00:00:10:02

I tried but could not find a solution.

# Re: Film Frame Calculations

to substract A1 from A2 with number of frames in sec in B1

perhaps formula in A4 could be

``=TEXT(FLOOR.MATH(LEFT(A2,8)-LEFT(A1,8)+(RIGHT(A2,2)-RIGHT(A1,2))/\$B\$1/24/60/60,"00:00:01"),"hh:mm:ss") & "."&TEXT(MOD(RIGHT(A2,2)-RIGHT(A1,2),\$B\$1),"00")``

# Re: Film Frame Calculations

@SergeiBaklanThank you for your formulas, there are very helpful. Except there is a bug for one instance. When I calculate E2, 1:00:13:00, minus D2, 1:00:01:00, using your formula:

``=TEXT(FLOOR.MATH(LEFT(E2,8)-LEFT(D2,8)+(RIGHT(E2,2)-RIGHT(D2,2))/24/24/60/60,"00:00:01"),"hh:mm:ss") & ":"&TEXT(MOD(RIGHT(E2,2)-RIGHT(D2,2),24),"00")``

The result gives 0:00:11:00, instead of 0:00:12:00. Would you be able to take a look at it? Thank you very much.

# Re: Film Frame Calculations

I think I found a solution for B2 minus A2, 24 frames per second.

``=TEXT(LEFT(B2,8)-LEFT(A2,8)-(RIGHT(A2,2)>RIGHT(B2,2))/(24*60*60),"hh:mm:ss")&TEXT(MOD(RIGHT(B2,2)-RIGHT(A2,2),24),"\:00")``

# Re: Film Frame Calculations

That's rounding error, I'd add some small fraction

``=TEXT(FLOOR.MATH(LEFT(D2,8)-LEFT(D1,8)+(RIGHT(D2,2)-RIGHT(D1,2)+0.00001)/\$B\$1/24/60/60,"00:00:01"),"hh:mm:ss") & "."&TEXT(MOD(RIGHT(D2,2)-RIGHT(D1,2),\$B\$1),"00")``

# Re: Film Frame Calculations

@Pamela Harvey-White  A friend had the same issue and asked for my help to calculate the duration between two cells in hh:mm:ss:ff (ff being the frames) format. I've created a formula that does the trick with precise results. It first subtracts hh:mm:ss and then adds the frames. If the subtraction between frames is less than 0, it subtracts a second and then adds the frames. Then it trims the text to ensure negative values aren't preceded by a minus sign.

This thing is not allowing me to attach files, so I'll just paste the formula here. In a table which has the starting time in cell A2 and the ending time in cell B2, it would go like this, with the duration in C2:
A2: 00:02:08:19
B2: 00:02:37:18
C2: =IF((RIGHT(B2,2)-RIGHT(A2,2))<0,TEXT(LEFT(B2,8)-LEFT(A2,8)-1/86400,"HH:MM:ss")&":"&RIGHT(TEXT(24+RIGHT(B2,2)-RIGHT(A2,2),"00"),2),TEXT(LEFT(B2,8)-LEFT(A2,8),"HH:MM:ss")&":"&RIGHT(TEXT(RIGHT(B2,2)-RIGHT(A2,2),"00"),2))

The result in C2 should be 00:00:28:23

# Re: Film Frame Calculations

Hello,

I would like to thank you for the formulas you've created. They saved me a lot of my time.

I was wondering whether there is any formula which can find clip based on the name, count both durations and round it up to seconds?

For example:

EDIT_Clip_01

00:00:03:00 + 00:00:02:19 = 00:00:05:19  00:00:06:00

Does it make sense?

Best,

T.

 Name Track Timecode In Timecode Out Duration EDIT_Clip_01 V1 00:46:33:03 00:46:36:03 00:00:03:00 EDIT_Clip_02 V1 00:46:36:03 00:46:40:05 00:00:04:02 EDIT_Clip_03 V1 00:01:48:04 00:01:52:23 00:00:04:19 EDIT_Clip_04 V1 00:07:29:16 00:07:32:24 00:00:03:08 EDIT_Clip_05 V1 00:08:04:02 00:08:07:12 00:00:03:10 EDIT_Clip_06 V1 00:01:32:10 00:01:33:24 00:00:01:14 EDIT_Clip_01 V1 00:46:54:14 00:46:57:08 00:00:02:19 EDIT_Clip_02 V1 00:22:27:13 00:22:31:00 00:00:03:12 EDIT_Clip_03 V1 00:00:55:12 00:00:56:16 00:00:01:04 EDIT_Clip_04 V1 00:48:07:08 00:48:11:07 00:00:03:24 EDIT_Clip_05 V1 00:48:03:20 00:48:07:08 00:00:03:13 EDIT_Clip_06 V1 00:48:22:11 00:48:26:00 00:00:03:14

# Re: Film Frame Calculations

@Tess33 I'm glad the formula was useful! The formula would be applied in a separate column or you'd need it nested in the same formula which I shared calculating the duration?

# Re: Film Frame Calculations

@facruz In a separate column please.

# Re: Film Frame Calculations

You'd need to put this formula in D2 for the rounded duration: =IF(NUMBERVALUE(RIGHT(C2,2))<12,LEFT(C2,8),LEFT(C2,8)+1/86400)

11 frames or less will round downwards and 12 frames or more will round upwards.

# Re: Film Frame Calculations

Thanks @facruz. It works well for rounding up the duration. However I was looking for the formula which can find clips with the same name, count durations of these clips and then round the total duration up to seconds.

For example:
EDIT_Clip_01 (row 2 and 8)
00:00:03:00 + 00:00:02:19 = 00:00:05:19 ≐ 00:00:06:00

Is it possible or is that something that excel can't do at all?

Thank you
Tess

# Re: Film Frame Calculations

Hello! I'm loving this because I've been dying to find a solution for the same problem. I tried using your formula, but I don't have the right format for the cells with my start and end times. It's reading as text and cannot calculate as a result. How would I format the input cells A2 and B2 in this example?

Thank you!!

# Re: Film Frame Calculations

If in A2 and B2 is something like this

values are always texts. One in A2 means 2 min 8 sec and 19/24 sec. Excel doesn't support native formats for them, we need to transform by formulae. If you are on Excel 365 or 2021 duration in C2 could be calculated as

``````=LET( st, A2,
en, B2,
frames, \$A\$1,
k, 1/60/60/24,
start, TEXTBEFORE(st,":",3)+TEXTAFTER(st,":",3)/frames*k,
end, TEXTBEFORE(en,":",3)+TEXTAFTER(en,":",3)/frames*k,
duration, end - start,
TEXT(INT(duration/k)*k,"hh:mm:ss") & ":" & ROUND(MOD(duration/k,1)*frames, 0)
)``````

and result is also returned as text.