Clip Duration Percent Speed Change

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Clip Duration Percent Speed Change Calculation:

  • CM =

    Duration of the input clip in minutes from the M:S:F time format

  • CS =

    Duration of the input clip in seconds from the M:S:F time format

  • CF =

    Number of extra frames making up the fraction of a second in the input clip from the M:S:F time format

  • TM =

    Target duration of output clip in minutes from the M:S:F time format

  • TS =

    Target duration of output clip in seconds from the M:S:F time format

  • TF =

    Target number of extra frames making up the fraction of a second in the output clip from the M:S:F time format

  •  F =

    Frames per second in the editing timeline

  •  P =

    Percent of speed change required to convert the duration of the input clip to the target duration

  •

    Choose the number of decimals to show in your answer. This is also known as significant figures. Select an appropriate amount of significant figures based on the precision of the input numbers.

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Clip Duration Percent Speed Change Formula

Given a video clip of a specific duration this calculator will determine the percent speed change required to convert that clip to a specific target duration.

PERCENT SPEED CHANGE = TOTAL INPUT FRAMES / TOTAL TARGET FRAMES * 100

Clip Duration Percent Speed Change Variables

To calculate the required percent speed change the total input frames, total target frames, and timeline frame rate are needed.

Clip Duration Minutes (CM)
Length of the starting video clip in minutes. Fractions of a minute should be entered in the seconds or frames field.
Clip Duration Seconds (CS)
Length of the starting video clip in seconds. Fractions of a second should be entered the frames field.
Clip Sub-Second Frames (CF)
Fractions of a second in the starting video clip measured in frames.
Target Duration Minutes (TM)
Target duration of the video clip in minutes. Fractions of a minute should be entered in the seconds or frames field.
Target Duration Seconds (TS)
Target duration of the video clip in seconds. Fractions of a second should be entered the frames field.
Target Sub-Second Frames (TF)
Fractions of a second in the target video clip duration measured in frames.
Frame Rate (F)
Number of frames per second in the editing timeline where the video clip will be placed or the number of frames per second in the input video. Decimal values are allow to accomodate frame rates of 29.97 or 59.94, etc.
Percent Speed Change (P)
Percent speed change that will convert the duration of the starting clip to the target duration. The starting and ending video clip will use the same frame rate in the calculation.

Clip Duration Percent Speed Change Solution

What percent speed change is required to convert a clip with a MINUTES:SECONDS:FRAMES duration of 1:30:15 to fill a gap of 0:25:0 on a 30 frames per second timeline?

  • PERCENT SPEED CHANGE = TOTAL INPUT FRAMES / TOTAL TARGET FRAMES * 100
  • This is the formula used in the calculation
  • TOTAL INPUT FRAMES = MINUTES * FRAME RATE * 60 + SECONDS * FRAME RATE + FRAMES
  • These are the steps to find the total frames in the input video clip
  • TOTAL INPUT FRAMES = 1 * 30 * 60 + 30 * 30 + 15
  • Enter the known values from the input video clip
  • TOTAL INPUT FRAMES = 2715
  • Complete the operations, multiplication first then addition
  • TOTAL TARGET FRAMES = MINUTES * FRAME RATE * 60 + SECONDS * FRAME RATE + FRAMES
  • Steps to finding the total number of frames targeted
  • TOTAL TARGET FRAMES = 0 * 30 * 60 + 25 * 30 + 0
  • Enter the known values for the target video clip duration
  • TOTAL TARGET FRAMES = 750
  • Complete the operations, multiplication first then addition
  • PERCENT SPEED CHANGE = TOTAL INPUT FRAMES / TOTAL TARGET FRAMES * 100
  • With the total number of frames for each part known the percent speed change can be calculated
  • PERCENT SPEED CHANGE = 2715 / 750 * 100
  • Enter the known values and calculate the result
  • 362%

A given video clip with a M:S:F duration of 1:30:15 would need to speed up by 362% to fill a target duration of 0:25:0.

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