[permalink] [id link]
In video compression, a keyframe, also known as an Intra Frame, is a frame in which a complete image is stored in the data stream.
from
Wikipedia
Some Related Sentences
video and compression
* A device applying video compression to a video signal
Digital video and digital still photography systems sometimes use a luma / chroma decomposition for improved compression.
For instance, a compression scheme for video may require expensive hardware for the video to be decompressed fast enough to be viewed as it is being decompressed, and the option to decompress the video in full before watching it may be inconvenient or require additional storage.
A number of popular compression formats exploit these perceptual differences, including those used in music files, images, and video.
Similarly, DVDs use the lossy MPEG-2 Video codec for video compression.
Video compression uses modern coding techniques to reduce redundancy in video data.
Most video compression algorithms and codecs combine spatial image compression and temporal motion compensation.
In practice most video codecs also use audio compression techniques in parallel to compress the separate, but combined data streams.
The majority of video compression algorithms use lossy compression.
As in all lossy compression, there is a tradeoff between video quality, cost of processing the compression and decompression, and system requirements.
These pixel groups or blocks of pixels are compared from one frame to the next and the video compression codec sends only the differences within those blocks.
In areas of video with more motion, the compression must encode more data to keep up with the larger number of pixels that are changing.
The sequence of frames contains spatial and temporal redundancy that video compression algorithms attempt to eliminate or code in a smaller size.
One of the most powerful techniques for compressing video is interframe compression.
Interframe compression works well for programs that will simply be played back by the viewer, but can cause problems if the video sequence needs to be edited.
Some video formats, such as DV, compress each frame independently using intraframe compression.
Today, nearly all commonly used video compression methods ( e. g., those in standards approved by the ITU-T or ISO ) apply a discrete cosine transform ( DCT ) for spatial redundancy reduction.
The following table is a partial history of international video compression standards.
Instead the broadcast can use the channel to include PSIP and can also subdivide across several video subchannels ( aka feeds ) of varying quality and compression rates, including non-video datacasting services that allow one-way high-bandwidth streaming of data to computers like National Datacast.
video and keyframe
For example, a keyframe 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 keyframe.
# The timeline, which gives the user a time-based view of all video and audio tracks in the project, as well as keyframe data for e. g. camera movement, effects, or opacity ;
* Rubber-bands, keyframe manipulation or dissolves: These are techniques in which the editor makes points in a video source on the timeline of the non-linear editing program that they can drag to different positions which makes the video either fade in or fade out.
video and also
This Einstein android, also called " Albert Hubo ", thus represents the first full-body walking android in history ( see video at
* Atmosfear ( series ), also known as Nightmare, a video oriented boardgame famously known for introducing " The Gatekeeper "
It also found a prominent role in the desktop video, video production, and show control business, leading to affordable video editing systems such as the Video Toaster.
24-bit graphics cards and video cards were also available.
Due to needing two accesses to each chip instead of one, and the complications of the video hardware also needing access, reading or writing RAM was much slower than on the BBC Micro.
Tridgell was also a leader in hacking the TiVo to make it work in Australia, which uses the PAL video format.
The ansible is also featured in the video game Advent Rising, for which Card helped write the story.
To enhance and modernize the Aster CT-80 the company also designed three alternative video display adapters to supplement or replace the TRS-80 compatible video card, ( due to the modular nature of the Aster it was simply a matter of changing the video card, and / or CPU card to upgrade the system ).
* A very High resolution monochrome video card with blitter and hardware text line and arc drawing capability, was designed for CAD applications, based on the NEC µPD7220 chip designed for graphic terminals, but was also used by some personal computers like the DEC Rainbow, and notably also for the Tulip System I.
The video card also supported 16 foreground and 16 background colors per character, by providing one byte per character position ( 2K ) of " color ram ".
This video card would also support fast scrolling of high resolution color screens for games, because it had the indirection of the character pointers, so it was possible to quickly scroll the high resolution display, ( or use other effects ) by simply manipulating the 1920 / 1024 bytes of text video instead of the 24. 576 bytes of high resolution video memory.
Arcologies also appear in video games, such as SimCity 2000, Escape Velocity Nova, Deus Ex: Invisible War, Call to Power II, Shadowrun, and Mass Effect.
* It was also during the 1990s that the anime craze grew out of video games, and the youth group known as otaku began to pour into Akihabara.
In the Nintendo / GameFreak video game franchise " Pokémon ", there are three creatures in the same evolutionary chain named Abra, Kadabra, and Alakazam ( the third of which is also an alleged magic word used by stage magicians ).
There was also a music video where a man runs on fire in slow motion (" California " by Wax ).
The track with Cher also resulted in a music video directed by Tamra Davis and Yvette Kaplan.
The eye in the sky usually makes a video recording of the table, which helps in resolving disputes and identifying dealer mistakes, and is also used to protect the casino against dealers who steal chips or players who cheat.
, also known as Bust-a-Move, is a 1994 tile-matching arcade puzzle video game for one or two players created by Taito Corporation.
video and known
A demodulator recovers the video signal and sound as an FM signal at the offset frequency ( this is known as intercarrier sound ).
The Atari 5200 SuperSystem, commonly known as the Atari 5200, is a video game console that was introduced in 1982 by Atari Inc. as a higher end complementary console for the popular Atari 2600.
Anheuser-Busch is known for its sport sponsorship, video game sponsorship ( Tapper ), and humorous advertisements.
* Boomer, a character in the Skylanders video game, known for wielding explosives enthusiastically.
The electronic systems used to play video games are known as platforms ; examples of these are personal computers and video game consoles.
In recent years, a growing Tex-Mex polka band trend from Mexican immigrants ( i. e. Conjunto or Norteño ) has influenced much of new Chicano folk music, especially in large market Spanish language radio stations and on television music video programs in the U. S. The band Quetzal is known for its political songs.
Conan the Barbarian ( also known as Conan the Cimmerian ) is a fictional sword and sorcery hero that originated in pulp fiction magazines and has since been adapted to books, comics, several films ( including Conan the Barbarian and Conan the Destroyer ), television programs ( cartoon and live-action ), video games, role-playing games and other media.
The Metal Gear Solid series of video games has a recurring character known as Grey Fox or the " Cyborg Ninja " who is a person wearing a cybernetic exoskeleton ( either worn as a suit or grafted directly to the character's body ) and wielding a high-frequency blade.
Until the early 1980s, they were known as video display terminals and were physically attached to the computer and keyboard.
* Cheat Code Central, a video game website primarily known for its extensive list of cheat codes
* D1, D2, D3, D5, D9 ( also known as Digital-S ) — various SMPTE commercial digital video standards
Dubbing, also known as rerecording, is the post-production process, used in filmmaking and video production, in which vocal recording ( usually dialogue ) occurs subsequent to the original recording stage.
Dance Dance Revolution, abbreviated DDR, and previously known as Dancing Stage in Europe and Australasia, is a music video game series produced by Konami.
* SUZAK Inc., also known as Suzaku, a video game developer
The highly successful BattleTech line led to a series of video games, some of the first virtual reality gaming suites, called Virtual World ( created by a subdivision of the company known at the time of development as ESP, an acronym for " Extremely Secret Project ") and a Saturday-morning animated TV series.
Since the original series ' run, he has become well known as an example of stop motion clay animation and an influential cultural icon, spawning many tributes and parodies, including a video game and toys.
H. 263v2 ( also known as H. 263 +, or as the 1998 version of H. 263 ) is the informal name of the second edition of the ITU-T H. 263 international video coding standard.
Also, in the popular video game Morrowind, its expansion Bloodmoon has a plot enemy known as Hircine, the Daedric god of the Hunt, who appears as a horned man with the face of a deer skull.
Other lesser known groups include the Islamic Liberation Party, Al-Najun min al-nar and Al-Takfir wa al-Hijra and these groups have variously been involved in activities such as attempted assassinations of political figures, arson of video shops and attempted takeovers of government buildings.
Later, he incorporated videotape, and as more portable and affordable equipment became available, this technique would become an industry standard known as video assist.
0.587 seconds.