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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 349 · 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.⏱️ When you put clips one after another, the video length is … (a) the shortest clip (b) the sum of the clips (c) the longest clip (d) always 1 minute
  2. 2.⏱️ A video has three clips of 41, 58 and 9 seconds. How long is the video (in seconds)?
  3. 3.⏱️ How many seconds are in 1 minute? (a) 30 (b) 100 (c) 60 (d) 10
  4. 4.⏱️ Your video must be 90 seconds long. Your clips add up to 78 seconds. How many more seconds of video do you need?
  5. 5.⏱️ A 57-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  6. 6.⏱️ How many seconds is 2 minutes 56 seconds?
  7. 7.⏱️ How many seconds is 9 minutes 1 second?
  8. 8.⏱️ A video has three clips of 60, 32 and 34 seconds. How long is the video (in seconds)?
  9. 9.⏱️ A video has three clips of 16, 48 and 55 seconds. How long is the video (in seconds)?
  10. 10.⏱️ A 128-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  11. 11.⏱️ A video has three clips of 49, 11 and 58 seconds. How long is the video (in seconds)?
  12. 12.⏱️ How many seconds is 9 minutes 53 seconds?
  13. 13.⏱️ A video has three clips of 40, 59 and 39 seconds. How long is the video (in seconds)?
  14. 14.⏱️ A video is 65 seconds long. How long is that in minutes and seconds? (a) 3 min 5 s (b) 2 min 5 s (c) 1 min 5 s (d) 1 min 35 s
  15. 15.⏱️ A video is 465 seconds long. How long is that in minutes and seconds? (a) 7 min 15 s (b) 7 min 45 s (c) 4 min 65 s (d) 8 min 45 s
  16. 16.⏱️ A 33-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  17. 17.⏱️ A video has three clips of 16, 46 and 56 seconds. How long is the video (in seconds)?
  18. 18.⏱️ A video has three clips of 25, 55 and 39 seconds. How long is the video (in seconds)?
  19. 19.⏱️ A 64-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  20. 20.⏱️ A video is 530 seconds long. How long is that in minutes and seconds? (a) 9 min 50 s (b) 8 min 50 s (c) 5 min 30 s (d) 8 min 20 s
  21. 21.⏱️ A 39-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  22. 22.⏱️ A 23-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  23. 23.⏱️ Your video must be 60 seconds long. Your clips add up to 30 seconds. How many more seconds of video do you need?
  24. 24.⏱️ How many seconds is 5 minutes 45 seconds?
  25. 25.⏱️ A 4-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  26. 26.⏱️ A video has three clips of 7, 46 and 18 seconds. How long is the video (in seconds)?
  27. 27.⏱️ A 24-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  28. 28.⏱️ A video is 170 seconds long. How long is that in minutes and seconds? (a) 2 min 20 s (b) 3 min 50 s (c) 1 min 70 s (d) 2 min 50 s
  29. 29.⏱️ Your video must be 90 seconds long. Your clips add up to 76 seconds. How many more seconds of video do you need?
  30. 30.⏱️ A video is 315 seconds long. How long is that in minutes and seconds? (a) 3 min 15 s (b) 6 min 15 s (c) 5 min 45 s (d) 5 min 15 s
  31. 31.⏱️ A video has three clips of 15, 49 and 18 seconds. How long is the video (in seconds)?
  32. 32.⏱️ How many seconds is 9 minutes 11 seconds?
  33. 33.⏱️ A 25-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  34. 34.⏱️ How many seconds is 8 minutes 19 seconds?
  35. 35.⏱️ A 26-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  36. 36.⏱️ A 75-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  37. 37.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) twice as long (c) silent (d) half as long
  38. 38.⏱️ A 6-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  39. 39.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  40. 40.⏱️ A 45-second clip is sped up to 3× speed. How long does it last now (in seconds)?

Answer key

  1. the sum of the clips
  2. 108
  3. 60
  4. 12
  5. 19
  6. 176
  7. 541
  8. 126
  9. 119
  10. 32
  11. 118
  12. 593
  13. 138
  14. 1 min 5 s
  15. 7 min 45 s
  16. 11
  17. 118
  18. 119
  19. 32
  20. 8 min 50 s
  21. 13
  22. 46
  23. 30
  24. 345
  25. 8
  26. 71
  27. 48
  28. 2 min 50 s
  29. 14
  30. 5 min 15 s
  31. 82
  32. 551
  33. 50
  34. 499
  35. 52
  36. 25
  37. half as long
  38. 12
  39. 58
  40. 15

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