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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 197 · 40 questions
TalentJR

Creator's tip (Add the clips): Video length = the clips added up. Minutes → seconds: × 60, then add the extra seconds. Seconds → minutes: take away 60 as many times as it fits. Still needed = target − what you have; 2× speed halves the time, half speed doubles it.

NameDateTime takenScore ___ / 40
  1. 1.⏱️ Your video must be 60 seconds long. Your clips add up to 10 seconds. How many more seconds of video do you need?
  2. 2.⏱️ Your video must be 120 seconds long. Your clips add up to 20 seconds. How many more seconds of video do you need?
  3. 3.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  4. 4.⏱️ How many seconds are in 1 minute? (a) 30 (b) 60 (c) 10 (d) 100
  5. 5.⏱️ An 11-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  6. 6.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  7. 7.⏱️ A video is 240 seconds long. How long is that in minutes and seconds? (a) 5 min 0 s (b) 2 min 40 s (c) 4 min 30 s (d) 4 min 0 s
  8. 8.⏱️ A 12-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  9. 9.⏱️ How many seconds is 2 minutes 35 seconds?
  10. 10.⏱️ A 96-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  11. 11.⏱️ When you put clips one after another, the video length is … (a) the longest clip (b) the sum of the clips (c) the shortest clip (d) always 1 minute
  12. 12.⏱️ A video has three clips of 19, 20 and 26 seconds. How long is the video (in seconds)?
  13. 13.⏱️ A 100-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  14. 14.⏱️ A 64-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  15. 15.⏱️ Your video must be 60 seconds long. Your clips add up to 50 seconds. How many more seconds of video do you need?
  16. 16.⏱️ A video has three clips of 18, 56 and 12 seconds. How long is the video (in seconds)?
  17. 17.⏱️ A 10-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  18. 18.⏱️ An 84-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  19. 19.⏱️ Your video must be 90 seconds long. Your clips add up to 71 seconds. How many more seconds of video do you need?
  20. 20.⏱️ How many seconds is 7 minutes 21 seconds?
  21. 21.⏱️ A video is 360 seconds long. How long is that in minutes and seconds? (a) 3 min 60 s (b) 6 min 30 s (c) 6 min 0 s (d) 7 min 0 s
  22. 22.⏱️ How many seconds is 8 minutes 56 seconds?
  23. 23.⏱️ A 16-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  24. 24.⏱️ A video has three clips of 49, 31 and 26 seconds. How long is the video (in seconds)?
  25. 25.⏱️ Your video must be 120 seconds long. Your clips add up to 29 seconds. How many more seconds of video do you need?
  26. 26.⏱️ A 12-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  27. 27.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  28. 28.⏱️ Your video must be 60 seconds long. Your clips add up to 34 seconds. How many more seconds of video do you need?
  29. 29.⏱️ A 30-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  30. 30.⏱️ A 9-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  31. 31.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  32. 32.⏱️ Speeding a clip up to 2× makes it … (a) silent (b) half as long (c) the same length (d) twice as long
  33. 33.⏱️ How many seconds is 4 minutes 25 seconds?
  34. 34.⏱️ A 19-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  35. 35.⏱️ A video has three clips of 41, 44 and 16 seconds. How long is the video (in seconds)?
  36. 36.⏱️ A video has three clips of 48, 6 and 55 seconds. How long is the video (in seconds)?
  37. 37.⏱️ A video has three clips of 46, 25 and 32 seconds. How long is the video (in seconds)?
  38. 38.⏱️ A 60-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  39. 39.⏱️ A 17-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ A video is 375 seconds long. How long is that in minutes and seconds? (a) 6 min 15 s (b) 7 min 15 s (c) 3 min 75 s (d) 6 min 45 s

Answer key

  1. 50
  2. 100
  3. 58
  4. 60
  5. 22
  6. 12
  7. 4 min 0 s
  8. 24
  9. 155
  10. 32
  11. the sum of the clips
  12. 65
  13. 25
  14. 32
  15. 10
  16. 86
  17. 5
  18. 28
  19. 19
  20. 441
  21. 6 min 0 s
  22. 536
  23. 32
  24. 106
  25. 91
  26. 6
  27. 8
  28. 26
  29. 60
  30. 18
  31. 50
  32. half as long
  33. 265
  34. 38
  35. 101
  36. 109
  37. 103
  38. 30
  39. 34
  40. 6 min 15 s

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