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Video Editing Worksheet: Video Length

Animation and design lesson 21: Video length sums · Set 38 · 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.⏱️ Speeding a clip up to 2× makes it … (a) the same length (b) twice as long (c) half as long (d) silent
  2. 2.⏱️ A video has three clips of 25, 35 and 36 seconds. How long is the video (in seconds)?
  3. 3.⏱️ A 92-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  4. 4.⏱️ A video is 255 seconds long. How long is that in minutes and seconds? (a) 4 min 45 s (b) 5 min 15 s (c) 4 min 15 s (d) 2 min 55 s
  5. 5.⏱️ A video is 395 seconds long. How long is that in minutes and seconds? (a) 6 min 5 s (b) 6 min 35 s (c) 3 min 95 s (d) 7 min 35 s
  6. 6.⏱️ Your video must be 120 seconds long. Your clips add up to 65 seconds. How many more seconds of video do you need?
  7. 7.⏱️ A video is 495 seconds long. How long is that in minutes and seconds? (a) 8 min 15 s (b) 4 min 95 s (c) 8 min 45 s (d) 9 min 15 s
  8. 8.⏱️ When you put clips one after another, the video length is … (a) the sum of the clips (b) the shortest clip (c) the longest clip (d) always 1 minute
  9. 9.⏱️ How many seconds are in 1 minute? (a) 10 (b) 30 (c) 100 (d) 60
  10. 10.⏱️ 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
  11. 11.⏱️ A video has three clips of 39, 57 and 13 seconds. How long is the video (in seconds)?
  12. 12.⏱️ How many seconds is 8 minutes 12 seconds?
  13. 13.⏱️ A 29-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  14. 14.⏱️ A 28-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  15. 15.⏱️ A 5-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  16. 16.⏱️ A video is 145 seconds long. How long is that in minutes and seconds? (a) 1 min 45 s (b) 3 min 25 s (c) 2 min 25 s (d) 2 min 55 s
  17. 17.⏱️ A 96-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  18. 18.⏱️ A 13-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  19. 19.⏱️ Your video must be 90 seconds long. Your clips add up to 75 seconds. How many more seconds of video do you need?
  20. 20.⏱️ A 10-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  21. 21.⏱️ Your video must be 90 seconds long. Your clips add up to 85 seconds. How many more seconds of video do you need?
  22. 22.⏱️ An 88-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  23. 23.⏱️ How many seconds is 1 minute 12 seconds?
  24. 24.⏱️ Your video must be 90 seconds long. Your clips add up to 61 seconds. How many more seconds of video do you need?
  25. 25.⏱️ A 58-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  26. 26.⏱️ Your video must be 180 seconds long. Your clips add up to 37 seconds. How many more seconds of video do you need?
  27. 27.⏱️ How many seconds is 2 minutes 39 seconds?
  28. 28.⏱️ An 18-second clip is sped up to 2× speed. How long does it last now (in seconds)?
  29. 29.⏱️ A 20-second clip is slowed to half speed (slow motion). How long does it last now (in seconds)?
  30. 30.⏱️ A 60-second clip is sped up to 3× speed. How long does it last now (in seconds)?
  31. 31.⏱️ A video has three clips of 13, 8 and 38 seconds. How long is the video (in seconds)?
  32. 32.⏱️ How many seconds is 3 minutes 59 seconds?
  33. 33.⏱️ How many seconds is 7 minutes 40 seconds?
  34. 34.⏱️ Your video must be 60 seconds long. Your clips add up to 43 seconds. How many more seconds of video do you need?
  35. 35.⏱️ A video is 265 seconds long. How long is that in minutes and seconds? (a) 4 min 55 s (b) 2 min 65 s (c) 4 min 25 s (d) 5 min 25 s
  36. 36.⏱️ A video is 225 seconds long. How long is that in minutes and seconds? (a) 2 min 25 s (b) 3 min 15 s (c) 3 min 45 s (d) 4 min 45 s
  37. 37.⏱️ A 144-second clip is sped up to 4× speed. How long does it last now (in seconds)?
  38. 38.⏱️ A video has three clips of 47, 52 and 30 seconds. How long is the video (in seconds)?
  39. 39.⏱️ Your video must be 90 seconds long. Your clips add up to 23 seconds. How many more seconds of video do you need?
  40. 40.⏱️ A 10-second clip is sped up to 2× speed. How long does it last now (in seconds)?

Answer key

  1. half as long
  2. 96
  3. 23
  4. 4 min 15 s
  5. 6 min 35 s
  6. 55
  7. 8 min 15 s
  8. the sum of the clips
  9. 60
  10. 4 min 0 s
  11. 109
  12. 492
  13. 58
  14. 56
  15. 10
  16. 2 min 25 s
  17. 32
  18. 26
  19. 15
  20. 20
  21. 5
  22. 22
  23. 72
  24. 29
  25. 29
  26. 143
  27. 159
  28. 9
  29. 40
  30. 20
  31. 59
  32. 239
  33. 460
  34. 17
  35. 4 min 25 s
  36. 3 min 45 s
  37. 36
  38. 129
  39. 67
  40. 5

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