227:, is a frame in which a complete image is stored in the data stream. In video compression, only changes that occur from one frame to the next are stored in the data stream, in order to greatly reduce the amount of information that must be stored. This technique capitalizes on the fact that most video sources (such as a typical movie) have only small changes in the image from one frame to the next. Whenever a drastic change to the image occurs, such as when switching from one camera shot to another or at a scene change, a key frame must be created. The entire image for the frame must be output when the visual difference between the two frames is so great that representing the new image incrementally from the previous frame would require more data than recreating the whole image.
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that reason, it is beneficial to include key frames at arbitrary intervals while encoding video. For example, a key frame may be output once for each 10 seconds of video, even though the video image does not change enough visually to warrant the automatic creation of the key frame. That would allow seeking within the video stream at a minimum of 10-second intervals. The downside is that the resulting video stream will be larger in disk size because many key frames are added when they are not necessary for the frame's visual representation. This drawback, however, does not produce significant compression loss when the
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highlights. Lights have many parameters, including light intensity, beam size, light color, and the texture cast by the light. Supposing that an animator wants the beam size to change smoothly from one value to another within a predefined period of time, that could be achieved by using key frames. At the start of the animation, a beam size value is set. Another value is set for the end of the animation. Thus, the software program automatically interpolates the two values, creating a smooth transition.
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Because video compression only stores incremental changes between frames (except for key frames), it is not possible to fast-forward or rewind to any arbitrary spot in the video stream. That is because the data for a given frame only represents how that frame was different from the preceding one. For
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In software packages that support animation, especially 3D graphics, there are many parameters that can be changed for any one object. One example of such an object is a light. In 3D graphics, lights function similarly to real-world lights. They cause illumination, cast shadows, and create specular
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software, a key frame is a frame used to indicate the beginning or end of a change made to a parameter. For example, a key frame could be set to indicate the point at which audio will have faded up or down to a certain level.
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timeline. A sequence of key frames defines which movement the viewer will see, whereas the position of the key frames on the film, video, or animation defines the
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of the movement. Because only two or three key frames over the span of a second do not create the illusion of movement, the remaining frames are filled with "
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List of animated television series by episode count
173:Use of key frames as a means to change parameters
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1476:List of animated films by box office admissions
149:because their position in time is measured in
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62:introducing citations to additional sources
1550:"Understanding Key Frames in Video Editing"
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19:For key frames in video compression, see
52:Relevant discussion may be found on the
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223:, a key frame, also known as an
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45:relies largely or entirely on a
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270:from the original on 2024-09-14
211:Video compression picture types
25:Video compression picture types
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266:. Video Production London UK.
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1471:Most expensive animated films
1126:Direct manipulation animation
777:Barrier-grid and stereography
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1017:Non-photorealistic rendering
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536:Early TV broadcast era
196:, as well as in video
1574:"PicsArt MOD APK APP"
1354:Independent animation
1344:Educational animation
209:Further information:
159:digital video editing
1613:Animation techniques
1334:Animated documentary
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1059:Traditional puppetry
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612:Biologist simulators
575:Animation department
58:improve this article
1407:Character animation
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725:Children's animated
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1309:Abstract animation
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678:Lost or unfinished
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580:Animation director
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69:Find sources:
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47:single source
43:This article
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1581:. Retrieved
1578:Your Website
1577:
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1557:. Retrieved
1554:Your Website
1553:
1544:
1538:
1486:anime series
1444:Motion comic
1396:
1313:visual music
1259:Pose to pose
1234:Inbetweening
1214:Chuckimation
1156:Shadowmation
1109:Animatronics
1010:eye tracking
990:Morph target
942:Multi-sketch
693:Short series
607:Art pipeline
585:Story artist
531:World War II
400:South Africa
272:. Retrieved
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114:October 2020
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1412:model sheet
1269:Rubber hose
1192:model sheet
970:Cel shading
812:Stop motion
797:Rotoscoping
769:Traditional
698:Stop-motion
644:Outsourcing
405:South Korea
385:Philippines
380:North Korea
225:intra-frame
198:compositing
73:"Key frame"
1597:Categories
1583:2024-05-27
1559:2024-05-27
1417:walk cycle
1284:Syncro-Vox
1197:walk cycle
1101:Mechanical
1027:Procedural
927:PowerPoint
880:Puppetoons
875:Pixilation
840:silhouette
829:strata-cut
820:Claymation
761:Techniques
750:Television
521:Silent Era
453:Bangladesh
448:Azerbaijan
335:Bangladesh
324:By country
274:2024-07-14
264:Monopolygo
246:References
188:non-linear
167:inbetweens
131:filmmaking
84:newspapers
1427:off-model
1397:Key frame
1254:Pixel art
1249:Pinscreen
1207:off-model
1151:Scanimate
1069:Machinima
868:Brickfilm
856:go motion
782:Flip book
316:Animation
242:format).
135:key frame
127:animation
54:talk page
1513:Category
1422:lip sync
1302:Variants
1289:Zoetrope
1239:Morphing
1202:lip sync
1182:Blocking
1074:Aniforms
1051:Puppetry
1032:Skeletal
899:timeline
890:Computer
745:Internet
627:regional
563:Animator
556:Industry
420:Thailand
390:Portugal
370:Malaysia
268:Archived
157:or on a
139:keyframe
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27:.
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