| 1. | Characters needed to be dynamic, so we used key frame.
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| 2. | The majority of mainstream anime uses fewer expressive key frames and more in-between animation.
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| 3. | The traditional method of adding hand and finger motion is to key frame the fingers.
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| 4. | Every key frame is numbered with a multi-digit identifier that may be referred to later.
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| 5. | :So, one advantage of key frame is that it prevents encoding errors from accummulating over time.
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| 6. | Remember the traditional process : Master animator draws key frames, maybe one or two per second.
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| 7. | For that reason, it is beneficial to include key frames at arbitrary intervals while encoding video.
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| 8. | Master animators would draw key frames of the film, then, junior animators would draw the in-between frames.
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| 9. | In computer graphics, Catmull Rom splines are frequently used to get smooth interpolated motion between key frames.
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| 10. | This is called inbetweening or tweening and the overall process is called " key frame animation ".
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