Misplaced Pages

#358641

97-434: Progressive scanning (alternatively referred to as noninterlaced scanning ) is a format of displaying, storing, or transmitting moving images in which all the lines of each frame are drawn in sequence. This is in contrast to interlaced video used in traditional analog television systems where only the odd lines, then the even lines of each frame (each image called a video field ) are drawn alternately, so that only half

194-413: A 120 or 240 Hz (current and former NTSC countries) or 100 or 200 Hz (PAL/SECAM countries) refresh rate. The rate of 120 was chosen as the least common multiple of 24 fps (cinema) and 30 fps (NTSC TV), and allows for less distortion when movies are viewed due to the elimination of telecine (3:2 pulldown). For PAL at 25 fps, 100 or 200 Hz is used as a fractional compromise of

291-414: A CRT are ideally suited to this approach, fast scenes will benefit from the 50 Hz refresh, the earlier field will have largely decayed away when the new field is written, and static images will benefit from improved resolution as both fields will be integrated by the eye. Modern CRT-based televisions may be made flicker-free in the form of 100 Hz technology. Many high-end LCD televisions now have

388-482: A Film would probably be about the aesthetics or theory of film, while a book entitled Let's Go to the Movies would probably be about the history of entertaining movies and blockbusters . Refresh rate Non-raster displays may not have a characteristic refresh rate. Vector displays , for instance, do not trace the entire screen, only the actual lines comprising the displayed image, so refresh speed may differ by

485-531: A PC monitor or an LCD or plasma-based television set, with the interlaced images displayed using the same mode as the progressive images. Progressive scan is used for scanning and storing film-based material on DVDs , for example, as 480p 24 or 576p 25 formats. Progressive scan was included in the Grand Alliance 's technical standard for HDTV in the early 1990s. It was agreed that all film transmission by HDTV would be broadcast with progressive scan in

582-611: A coin-operated peep-box Electrotachyscope model were manufactured by Siemens & Halske in Berlin and sold internationally. Nearly 34,000 people paid to see it at the Berlin Exhibition Park in the summer of 1892. Others saw it in London or at the 1893 Chicago World's Fair . On 25 November 1894, Anschütz introduced a Electrotachyscope projector with a 6x8 meter screening in Berlin. Between 22 February and 30 March 1895,

679-545: A combination of some or all of these techniques, and other visual effects . Before the introduction of digital production, a series of still images were recorded on a strip of chemically sensitized celluloid ( photographic film stock ), usually at a rate of 24 frames per second. The images are transmitted through a movie projector at the same rate as they were recorded, with a Geneva drive ensuring that each frame remains still during its short projection time. A rotating shutter causes stroboscopic intervals of darkness, but

776-413: A conservative rate, usually 60 Hz. Some fullscreen applications, including many games, now allow the user to reconfigure the refresh rate before entering fullscreen mode, but most default to a conservative resolution and refresh rate and let you increase the settings in the options. Old monitors could be damaged if a user set the video card to a refresh rate higher than the highest rate supported by

873-474: A contract that called for an annual salary of one million dollars. From 1931 to 1956, film was also the only image storage and playback system for television programming until the introduction of videotape recorders . In the United States, much of the film industry is centered around Hollywood, California . Other regional centers exist in many parts of the world, such as Mumbai -centered Bollywood ,

970-421: A day or two to formulate their opinions. Despite this, critics have an important impact on the audience response and attendance at films, especially those of certain genres . Mass marketed action , horror , and comedy films tend not to be greatly affected by a critic's overall judgment of a film. The plot summary and description of a film and the assessment of the director's and screenwriters' work that makes up

1067-540: A few decades before it was successfully combined with a method to record series of sequential images in real-time. In 1878, Eadweard Muybridge eventually managed to take a series of photographs of a running horse with a battery of cameras in a line along the track and published the results as The Horse in Motion on cabinet cards . Muybridge, as well as Étienne-Jules Marey , Ottomar Anschütz and many others, would create many more chronophotography studies. Muybridge had

SECTION 10

#1732798321359

1164-400: A fixed 60 fps rate cannot display a 24 fps movie at an even, judder-free rate. Usually a 3:2 pulldown is used, giving a slight uneven movement. While common multisync CRT computer monitors have been capable of running at even multiples of 24 Hz since the early 1990s, recent "120 Hz" LCDs have been produced for the purpose of having smoother, more fluid motion, depending upon

1261-551: A flashing soda can during a screening). These fields may further create derivative fields, such as a movie review section in a newspaper or a television guide. Sub-industries can spin off from film, such as popcorn makers, and film-related toys (e.g., Star Wars figures ). Sub-industries of pre-existing industries may deal specifically with film, such as product placement and other advertising within films. The terminology used for describing motion pictures varies considerably between British and American English . In British usage,

1358-406: A minimum of 200 Hz. Different operating systems set the default refresh rate differently. Microsoft Windows 95 and Windows 98 (First and Second Editions) set the refresh rate to the highest rate that they believe the display supports. Windows NT -based operating systems, such as Windows 2000 and its descendants Windows XP , Windows Vista and Windows 7 , set the default refresh rate to

1455-764: A more dynamic and engaging experience for the viewer. The development of scene construction through mise-en-scène , editing, and special effects led to more sophisticated techniques that can be compared to those utilized in opera and ballet. The French New Wave movement of the late 1950s and 1960s also embraced the montage technique, with filmmakers such as Jean-Luc Godard and François Truffaut using montage to create distinctive and innovative films. This approach continues to be influential in contemporary cinema, with directors employing montage to create memorable sequences in their films. In contemporary cinema, montage continues to play an essential role in shaping narratives and creating emotional resonance. Filmmakers have adapted

1552-425: A new section or sequence within a film. This technique can be used to convey a narrative or to create an emotional or intellectual effect by juxtaposing different shots, often for the purpose of condensing time, space, or information. Montage can involve flashbacks , parallel action, or the interplay of various visual elements to enhance the storytelling or create symbolic meaning . The concept of montage emerged in

1649-466: A projection before 1882. He then further developed the device into the Théâtre Optique which could project longer sequences with separate backgrounds, patented in 1888. He created several movies for the machine by painting images on hundreds of gelatin plates that were mounted into cardboard frames and attached to a cloth band. From 28 October 1892 to March 1900 Reynaud gave over 12,800 shows to

1746-562: A relationship between the content in the separate shots in the minds of the viewer. It is this relationship that makes all film storytelling possible. In a simple example, if a person is shown looking out a window, whatever the next shot shows, it will be regarded as the view the person was seeing.) Each scene was a single stationary shot with the action occurring before it. The scenes were later broken up into multiple shots photographed from different distances and angles. Other techniques such as camera movement were developed as effective ways to tell

1843-472: A separate picture. For this reason, it is usually recommended to use a display capable of at least 120 Hz, because divided in half this rate is again 60 Hz. Higher refresh rates result in greater image stability, for example 72 Hz non-stereo is 144 Hz stereo, and 90 Hz non-stereo is 180 Hz stereo. Most low-end computer graphics cards and monitors cannot handle these high refresh rates, especially at higher resolutions. For LCD monitors

1940-526: A source of profit almost as soon as the process was invented. Upon seeing how successful their new invention, and its product, was in their native France, the Lumières quickly set about touring the Continent to exhibit the first films privately to royalty and publicly to the masses. In each country, they would normally add new, local scenes to their catalogue and, quickly enough, found local entrepreneurs in

2037-415: A story with film. Until sound film became commercially practical in the late 1920s, motion pictures were a purely visual art , but these innovative silent films had gained a hold on the public imagination. Rather than leave audiences with only the noise of the projector as an accompaniment, theater owners hired a pianist or organist or, in large urban theaters, a full orchestra to play music that fit

SECTION 20

#1732798321359

2134-687: A time through "peep show" devices such as the Electrotachyscope , Kinetoscope and the Mutoscope . Not much later, exhibitors managed to project films on large screens for theatre audiences. The first public screenings of films at which admission was charged were made in 1895 by the American Woodville Latham and his sons, using films produced by their Eidoloscope company, by the Skladanowsky brothers and by

2231-531: A total of circa 7,000 paying customers came to view a 1.5-hour show of some 40 scenes at a 300-seat hall in the old Reichstag building in Berlin. Émile Reynaud already mentioned the possibility of projecting the images of the Praxinoscope in his 1877 patent application. He presented a praxinoscope projection device at the Société française de photographie on 4 June 1880, but did not market his praxinoscope

2328-516: A total of over 500,000 visitors at the Musée Grévin in Paris. By the end of the 1880s, the introduction of lengths of celluloid photographic film and the invention of motion picture cameras , which could photograph a rapid sequence of images using only one lens, allowed action to be captured and stored on a single compact reel of film. Movies were initially shown publicly to one person at

2425-474: A valid fine art . André Bazin reacted against this theory by arguing that film's artistic essence lay in its ability to mechanically reproduce reality, not in its differences from reality, and this gave rise to realist theory . More recent analysis spurred by Jacques Lacan 's psychoanalysis and Ferdinand de Saussure 's semiotics among other things has given rise to psychoanalytic film theory , structuralist film theory , feminist film theory , and others. On

2522-401: Is a shortening of the word " cinematography " and is used to refer to either filmmaking , the film industry , the overall art form, or a movie theater . The moving images of a film are created by photographing actual scenes with a motion-picture camera , by photographing drawings or miniature models using traditional animation techniques, by means of CGI and computer animation , or by

2619-403: Is drawn. The development of televisions in the 1930s was determined by a number of technical limitations. The AC power line frequency was used for the vertical refresh rate for two reasons. The first reason was that the television's vacuum tube was susceptible to interference from the unit's power supply, including residual ripple. This could cause drifting horizontal bars (hum bars). Using

2716-411: Is having a shot that zooms in on the forehead of an actor with an expression of silent reflection that cuts to a shot of a younger actor who vaguely resembles the first actor, indicating that the first person is remembering a past self, an edit of compositions that causes a time transition. Montage is a film editing technique in which separate pieces of film are selected, edited, and assembled to create

2813-424: Is not being updated, during which the image data in the host system's frame buffer can be updated. Vsync options can eliminate screen tearing by rendering the whole image at the same time. On smaller CRT monitors (up to about 15 in or 38 cm), few people notice any discomfort between 60–72 Hz. On larger CRT monitors (17 in or 43 cm or larger), most people experience mild discomfort unless

2910-487: Is scaled and displayed. Deinterlacing can result in noticeable visual artifacts and/or input lag between the video source and the display device. Moving image A film , also known as a movie , is a work of visual art that simulates experiences and otherwise communicates ideas, stories, perceptions, emotions, or atmosphere through the use of moving images that are generally accompanied by sound and (less commonly) other sensory stimulations. The word "cinema"

3007-443: Is that it requires higher bandwidth than interlaced video that has the same frame size and vertical refresh rate . Because of this 1080p is not used for broadcast. For explanations of why interlacing was originally used, see interlaced video . For an in-depth explanation of the fundamentals and advantages/disadvantages of converting interlaced video to a progressive format, see deinterlacing . The main advantage with progressive scan

Progressive scan - Misplaced Pages Continue

3104-417: Is that motion appears smoother and more realistic. There is an absence of visual artifacts associated with interlaced video of the same line rate, such as interline twitter. Frames have no interlace artifacts and can be captured for use as still photos. With progressive scan there is no need to introduce intentional blurring (sometimes referred to as anti-aliasing) to reduce interline twitter and eye strain. In

3201-446: Is the greatest director , the one who invented a new language , true to the nature of film, as it captures life as a reflection, life as a dream." An example of the language is a sequence of back and forth images of one speaking actor's left profile, followed by another speaking actor's right profile, then a repetition of this, which is a language understood by the audience to indicate a conversation. This describes another theory of film,

3298-460: The 180-degree rule , as a visual story-telling device with an ability to place a viewer in a context of being psychologically present through the use of visual composition and editing. The " Hollywood style " includes this narrative theory, due to the overwhelming practice of the rule by movie studios based in Hollywood, California, during film's classical era. Another example of cinematic language

3395-545: The French New Wave , New German Cinema wave, Indian New Wave , Japanese New Wave , New Hollywood , and Egyptian New Wave ) and the rise of film-school-educated independent filmmakers contributed to the changes the medium experienced in the latter half of the 20th century. Digital technology has been the driving force for change throughout the 1990s and into the 2000s. Digital 3D projection largely replaced earlier problem-prone 3D film systems and has become popular in

3492-802: The Indian film industry's Hindi cinema which produces the largest number of films in the world. Though the expense involved in making films has led cinema production to concentrate under the auspices of movie studios , recent advances in affordable film making equipment have allowed independent film productions to flourish. Profit is a key force in the industry, due to the costly and risky nature of filmmaking; many films have large cost overruns , an example being Kevin Costner 's Waterworld . Yet many filmmakers strive to create works of lasting social significance. The Academy Awards (also known as "the Oscars") are

3589-426: The interline twitter effect associated with interlacing. On the left there are two progressive scan images. In the middle there are two interlaced images and on the right there are two images with line doublers . The original resolutions are above and the ones with spatial anti-aliasing are below. The interlaced images use half the bandwidth of the progressive ones. The images in the center column precisely duplicate

3686-432: The 120 Hz rate is produced by frame-doubling a 60 fps 3:2 pulldown signal, the uneven motion could still be visible (i.e., so-called 6-4 pulldown). Additionally, material may be displayed with synthetically created smoothness with the addition of motion interpolation abilities to the display, which has an even larger effect on filmed material. "50 Hz" TV sets (when fed with "50 Hz" content) usually get

3783-438: The 1840s and commercial success since the early 1850s, raised interest in completing the photographic medium with the addition of means to capture colour and motion. In 1849, Joseph Plateau published about the idea to combine his invention of the phénakisticope with the stereoscope, as suggested to him by stereoscope inventor Charles Wheatstone , and to use photographs of plaster sculptures in different positions to be animated in

3880-427: The 1890s. Photography was introduced in 1839, but initially photographic emulsions needed such long exposures that the recording of moving subjects seemed impossible. At least as early as 1844, photographic series of subjects posed in different positions were created to either suggest a motion sequence or document a range of different viewing angles. The advent of stereoscopic photography, with early experiments in

3977-432: The 1920s, with pioneering Soviet filmmakers such as Sergei Eisenstein and Lev Kuleshov developing the theory of montage. Eisenstein's film Battleship Potemkin (1925) is a prime example of the innovative use of montage, where he employed complex juxtapositions of images to create a visceral impact on the audience. As the art of montage evolved, filmmakers began incorporating musical and visual counterpoint to create

Progressive scan - Misplaced Pages Continue

4074-686: The 2000s is so intense, well-coordinated and well financed that reviewers cannot prevent a poorly written or filmed blockbuster from attaining market success. However, the cataclysmic failure of some heavily promoted films which were harshly reviewed, as well as the unexpected success of critically praised independent films indicates that extreme critical reactions can have considerable influence. Other observers note that positive film reviews have been shown to spark interest in little-known films. Conversely, there have been several films in which film companies have so little confidence that they refuse to give reviewers an advanced viewing to avoid widespread panning of

4171-508: The Dolby A noise reduction system, which became a standard in the recording industry and eliminated the hissing sound associated with earlier standardization efforts. Dolby Stereo , a revolutionary surround sound system, followed and allowed cinema designers to take acoustics into consideration when designing theaters. This innovation enabled audiences in smaller venues to enjoy comparable audio experiences to those in larger city theaters. Today,

4268-458: The United States is "movie", while in Europe , "film" is preferred. Archaic terms include "animated pictures" and "animated photography". "Flick" is, in general a slang term, first recorded in 1926. It originates in the verb flicker, owing to the flickering appearance of early films. Common terms for the field, in general, include "the big screen", "the movies", "the silver screen", and "cinema";

4365-402: The United States, movie is the predominant term for the medium. Although the words film and movie are sometimes used interchangeably, film is more often used when considering artistic , theoretical , or technical aspects. The term movies more often refers to entertainment or commercial aspects, as where to go for fun evening on a date. For example, a book titled How to Understand

4462-423: The United States. Even if a signal is sent interlaced, an HDTV will convert it to progressive scan. Progressive scan is used for most cathode-ray tube (CRT) computer monitors , all LCD computer monitors, and most HDTVs as the display resolutions are progressive by nature. Other CRT-type displays, such as SDTVs , needed to use interlace to achieve full vertical resolution, but could display progressive video at

4559-408: The apparent flicker by painting first the odd lines and then the even lines (these are known as fields). This doubles the refresh rate, compared to a progressive scan image at the same frame rate. This works perfectly for video cameras, where each field results from a separate exposure – the effective frame rate doubles, there are now 50 rather than 25 exposures per second. The dynamics of

4656-414: The case of most media, such as DVD movies and video games, the video is blurred during the authoring process itself to subdue interline twitter when played back on interlaced displays. As a consequence, recovering the sharpness of the original video is impossible when the video is viewed progressively. A user-intuitive solution to this is when display hardware and video games come equipped with options to blur

4753-479: The chronophotography works of Muybridge and Étienne-Jules Marey . In 1886, Anschütz developed the Electrotachyscope , an early device that displayed short motion picture loops with 24 glass plate photographs on a 1.5 meter wide rotating wheel that was hand-cranked to a speed of circa 30 frames per second. Different versions were shown at many international exhibitions, fairs, conventions, and arcades from 1887 until at least 1894. Starting in 1891, some 152 examples of

4850-552: The combined device. In 1852, Jules Duboscq patented such an instrument as the "Stéréoscope-fantascope, ou Bïoscope", but he only marketed it very briefly, without success. One Bïoscope disc with stereoscopic photographs of a machine is in the Plateau collection of Ghent University, but no instruments or other discs have yet been found. By the late 1850s the first examples of instantaneous photography came about and provided hope that motion photography would soon be possible, but it took

4947-403: The contours of dozens of his chronophotographic series traced onto glass discs and projected them with his zoopraxiscope in his lectures from 1880 to 1895. Anschütz made his first instantaneous photographs in 1881. He developed a portable camera that allowed shutter speeds as short as 1/1000 of a second in 1882. The quality of his pictures was generally regarded as much higher than that of

SECTION 50

#1732798321359

5044-480: The cost of halving the vertical resolution. Before HDTV became common, some televisions and video projectors were produced with one or more full-resolution progressive-scan inputs, allowing these displays to take advantage of formats like PALPlus , progressive scan DVD players , and certain video game consoles. HDTVs support the progressively-scanned resolutions of 480p and 720p. 1080p displays are usually more expensive than comparable lower resolution HDTV models. At

5141-448: The debut of UHD , TVs had emerged on the consumer market in the 2010s, also using progressive resolutions, but usually sold with prohibitive prices ( 4k HDTVs ) or were still in prototype stage ( 8k HDTVs ). Prices for consumer-grade 4k HDTVs have since lowered and become more affordable, which has increased their prevalence amongst consumers. Computer monitors can use even greater display resolutions . The disadvantage of progressive scan

5238-593: The early 2010s. " Film theory " seeks to develop concise and systematic concepts that apply to the study of film as art . The concept of film as an art-form began in 1911 with Ricciotto Canudo 's manifest The Birth of the Sixth Art . The Moscow Film School , the oldest film school in the world, was founded in 1919, in order to teach about and research film theory. Formalist film theory , led by Rudolf Arnheim , Béla Balázs , and Siegfried Kracauer , emphasized how film differed from reality and thus could be considered

5335-444: The film by 4%. The resulting picture is therefore smooth, however, there is a small shift in the pitch of the audio. NTSC sets display both 24 fps and 25 fps material without any speed shifting by using a technique called 3:2 pulldown , but at the expense of introducing unsmooth playback in the form of telecine judder . Similar to some computer monitors and some DVDs, analog television systems use interlace , which decreases

5432-792: The film. However, this usually backfires, as reviewers are wise to the tactic and warn the public that the film may not be worth seeing and the films often do poorly as a result. Journalist film critics are sometimes called film reviewers. Critics who take a more academic approach to films, through publishing in film journals and writing books about films using film theory or film studies approaches, study how film and filming techniques work, and what effect they have on people. Rather than having their reviews published in newspapers or appearing on television, their articles are published in scholarly journals or up-market magazines. They also tend to be affiliated with colleges or universities as professors or instructors. The making and showing of motion pictures became

5529-410: The future of sound in film remains uncertain, with potential influences from artificial intelligence , remastered audio, and personal viewing experiences shaping its development. However, it is clear that the evolution of sound in cinema has been marked by continuous innovation and a desire to create more immersive and engaging experiences for audiences. A significant technological advancement in film

5626-522: The future of the cinema industry, and Hollywood employment has become less reliable, particularly for medium and low-budget films. Derivative academic fields of study may both interact with and develop independently of filmmaking, as in film theory and analysis. Fields of academic study have been created that are derivative or dependent on the existence of film, such as film criticism , film history , divisions of film propaganda in authoritarian governments, or psychological on subliminal effects (e.g., of

5723-517: The horizontal scan rate by dividing the scanning frequency by the number of horizontal lines, plus some amount of time to allow for the beam to return to the top. By convention, this is a 1.05x multiplier. For instance, a monitor with a horizontal scanning frequency of 96 kHz at a resolution of 1280 × 1024 results in a refresh rate of 96,000 ÷ (1024 × 1.05) ≈ 89 Hz (rounded down). CRT refresh rates have historically been an important factor in video game programming. In early videogame systems,

5820-493: The innovative work of D. W. Griffith in The Birth of a Nation (1915) and Intolerance (1916). However, in the 1920s, European filmmakers such as Eisenstein , F. W. Murnau and Fritz Lang , in many ways inspired by the meteoric wartime progress of film through Griffith, along with the contributions of Charles Chaplin , Buster Keaton and others, quickly caught up with American film-making and continued to further advance

5917-452: The last of these is commonly used, as an overarching term, in scholarly texts and critical essays. In the early years, the word "sheet" was sometimes used instead of "screen". The art of film has drawn on several earlier traditions in fields such as oral storytelling , literature , theatre and visual arts . Forms of art and entertainment that had already featured moving or projected images include: The stroboscopic animation principle

SECTION 60

#1732798321359

6014-562: The least common multiple of 600 (24 × 25). These higher refresh rates are most effective from a 24p -source video output (e.g. Blu-ray Disc ), and/or scenes of fast motion. As movies are usually filmed at a rate of 24 frames per second, while television sets operate at different rates, some conversion is necessary. Different techniques exist to give the viewer an optimal experience. The combination of content production, playback device, and display device processing may also give artifacts that are unnecessary. A display device producing

6111-522: The lower refresh rate of 50 Hz introduces more flicker, so sets that use digital technology to double the refresh rate to 100 Hz are now very popular. (see Broadcast television systems ) Another difference between 50 Hz and 60 Hz standards is the way motion pictures (film sources as opposed to video camera sources) are transferred or presented. 35 mm film is typically shot at 24 frames per second (fps). For PAL 50 Hz this allows film sources to be easily transferred by accelerating

6208-461: The majority of most film reviews can still have an important impact on whether people decide to see a film. For prestige films such as most dramas and art films , the influence of reviews is important. Poor reviews from leading critics at major papers and magazines will often reduce audience interest and attendance. The impact of a reviewer on a given film's box office performance is a matter of debate. Some observers claim that movie marketing in

6305-405: The medium. In the 1920s, the development of electronic sound recording technologies made it practical to incorporate a soundtrack of speech, music and sound effects synchronized with the action on the screen. The resulting sound films were initially distinguished from the usual silent "moving pictures" or "movies" by calling them "talking pictures" or "talkies." The revolution they wrought

6402-402: The monitor. Some models of monitors display a notice that the video signal uses an unsupported refresh rate. Some LCDs support adapting their refresh rate to the current frame rate delivered by the graphics card. Two technologies that allow this are FreeSync and G-Sync . When LCD shutter glasses are used for stereo 3D displays , the effective refresh rate is halved, because each eye needs

6499-401: The mood of the film at any given moment. By the early 1920s, most films came with a prepared list of sheet music to be used for this purpose, and complete film scores were composed for major productions. The rise of European cinema was interrupted by the outbreak of World War I , while the film industry in the United States flourished with the rise of Hollywood , typified most prominently by

6596-440: The most prominent film awards in the United States, providing recognition each year to films, based on their artistic merits. There is also a large industry for educational and instructional films made in lieu of or in addition to lectures and texts. Revenue in the industry is sometimes volatile due to the reliance on blockbuster films released in movie theaters . The rise of alternative home entertainment has raised questions about

6693-477: The name of the medium is film . The word movie is understood but seldom used. Additionally, the pictures (plural) is used somewhat frequently to refer to the place where movies are exhibited; in American English this may be called the movies , but that term is becoming outdated. In other countries, the place where movies are exhibited may be called a cinema or movie theatre . By contrast, in

6790-612: The number of actual image frames are used to produce video. The system was originally known as "sequential scanning" when it was used in the Baird 240 line television transmissions from Alexandra Palace , United Kingdom in 1936. It was also used in Baird's experimental transmissions using 30 lines in the 1920s. Progressive scanning became universally used in computer screens beginning in the early 21st century. This rough animation compares progressive scan with interlace scan, also demonstrating

6887-436: The number of films made in color gradually increased year after year. In the early 1950s, the proliferation of black-and-white television started seriously depressing North American theater attendance. In an attempt to lure audiences back into theaters, bigger screens were installed, widescreen processes, polarized 3D projection , and stereophonic sound were introduced, and more films were made in color, which soon became

6984-427: The only time available for computation was during the vertical blanking interval , during which the beam is returning to the top right corner of the screen and no image is being drawn. Even in modern games, however, it is important to avoid altering the computer's video buffer except during the vertical retrace, to prevent flickering graphics or screen tearing . Unlike CRTs, where the image will fade unless refreshed,

7081-454: The other hand, critics from the analytical philosophy tradition, influenced by Wittgenstein , try to clarify misconceptions used in theoretical studies and produce analysis of a film's vocabulary and its link to a form of life . Film is considered to have its own language . James Monaco wrote a classic text on film theory, titled "How to Read a Film," that addresses this. Director Ingmar Bergman famously said, " Andrei Tarkovsky for me

7178-411: The pixel brightness changes are much slower than CRT or plasma phosphors. Typically LCD pixel brightness changes are faster when voltage is applied than when voltage is removed, resulting in an asymmetric pixel response time. With 3D shutter glasses this can result in a blurry smearing of the display and poor depth perception, due to the previous image frame not fading to black fast enough as the next frame

7275-401: The pixels of liquid-crystal displays retain their state for as long as power is provided, and consequently there is no intrinsic flicker regardless of refresh rate. However, the refresh rate still determines the highest frame rate that can be displayed, and despite there being no actual blanking of the screen, the vertical blanking interval is still a period in each refresh cycle when the screen

7372-422: The pixels of the ones on the left, but interlacing causes details to twitter. Real interlaced video blurs such details to prevent twittering, but as seen in the pictures of the lower row, such softening (or anti-aliasing) comes at the cost of image clarity. A line doubler shown in the bottom right picture cannot restore the previously interlaced image in the center to the full quality of the progressive image shown in

7469-413: The refresh is set to 72 Hz or higher. A rate of 100 Hz is comfortable at almost any size. However, this does not apply to LCD monitors. The closest equivalent to a refresh rate on an LCD monitor is its frame rate , which is often locked at 60 fps. But this is rarely a problem, because the only part of an LCD monitor that could produce CRT-like flicker—its backlight—typically operates at around

7566-523: The rule rather than the exception. Some important mainstream Hollywood films were still being made in black-and-white as late as the mid-1960s, but they marked the end of an era. Color television receivers had been available in the US since the mid-1950s, but at first, they were very expensive and few broadcasts were in color. During the 1960s, prices gradually came down, color broadcasts became common, and sales boomed. The overwhelming public verdict in favor of color

7663-492: The same dreams and hurts, then it deserves to be called great. — Roger Ebert (1986) Film criticism is the analysis and evaluation of films. In general, these works can be divided into two categories: academic criticism by film scholars and journalistic film criticism that appears regularly in newspapers and other media. Film critics working for newspapers, magazines , and broadcast media mainly review new releases. Normally they only see any given film once and have only

7760-840: The same frequency reduced this, and made interference static on the screen and therefore less obtrusive. The second reason was that television studios would use AC lamps, filming at a different frequency would cause strobing . Thus producers had little choice but to run sets at 60 Hz in America, and 50 Hz in Europe. These rates formed the basis for the sets used today: 60 Hz System M (almost always used with NTSC color coding) and 50 Hz System B/G (almost always used with PAL or SECAM color coding). This accident of chance gave European sets higher resolution, in exchange for lower frame-rates. Compare System M (704 × 480 at 30i) and System B/G (704 × 576 at 25i). However,

7857-481: The screen since their phosphors will fade and the image will disappear quickly unless refreshed regularly. In a CRT, the vertical scan rate is the number of times per second that the electron beam returns to the upper left corner of the screen to begin drawing a new frame. It is controlled by the vertical blanking signal generated by the video controller , and is partially limited by the monitor's maximum horizontal scan rate . The refresh rate can be calculated from

7954-434: The size and complexity of the image data. For computer programs or telemetry , the term is sometimes applied to how frequently a datum is updated with a new external value from another source (for example; a shared public spreadsheet or hardware feed). While all raster display devices have a characteristic refresh rate, the physical implementation differs between technologies. Raster-scan CRTs by their nature must refresh

8051-408: The source material, and any subsequent processing done to the signal. In the case of material shot on video, improvements in smoothness just from having a higher refresh rate may be barely noticeable. In the case of filmed material, as 120 is an even multiple of 24, it is possible to present a 24 fps sequence without judder on a well-designed 120 Hz display (i.e., so-called 5-5 pulldown). If

8148-602: The spoken words, music, and other sounds ) runs along a portion of the film exclusively reserved for it, and was not projected. Contemporary films are usually fully digital through the entire process of production, distribution, and exhibition. The name "film" originally referred to the thin layer of photochemical emulsion on the celluloid strip that used to be the actual medium for recording and displaying motion pictures. Many other terms exist for an individual motion-picture, including "picture", "picture show", "moving picture", "photoplay", and "flick". The most common term in

8245-510: The street, and the view from the front of a trolley as it traveled a city's Main Street. According to legend, when a film showed a locomotive at high speed approaching the audience, the audience panicked and ran from the theater. Around the turn of the 20th century, films started stringing several scenes together to tell a story. (The filmmakers who first put several shots or scenes discovered that, when one shot follows another, that act establishes

8342-445: The television threat emerged in the 1940s and 1950s, the film industry needed to innovate to attract audiences. In terms of sound technology, this meant the development of surround sound and more sophisticated audio systems, such as Cinerama's seven-channel system. However, these advances required a large number of personnel to operate the equipment and maintain the sound experience in theaters. In 1966, Dolby Laboratories introduced

8439-412: The top left. Note: Because the refresh rate has been slowed by a factor of three, and the resolution is less than half a resolution of a typical interlaced video, the flicker in the simulated interlaced portions and also the visibility of the black lines in these examples are exaggerated. Also, the images above are based on what it would look like on a monitor that does not support interlaced scan, such as

8536-451: The traditional montage technique to suit the evolving aesthetics and storytelling styles of modern cinema. As the medium of film continues to evolve, montage remains an integral aspect of visual storytelling, with filmmakers finding new and innovative ways to employ this powerful technique. If a movie can illuminate the lives of other people who share this planet with us and show us not only how different they are but, how even so, they share

8633-564: The various countries of Europe to buy their equipment and photograph, export, import, and screen additional product commercially. The Oberammergau Passion Play of 1898 was the first commercial motion picture ever produced. Other pictures soon followed, and motion pictures became a separate industry that overshadowed the vaudeville world. Dedicated theaters and companies formed specifically to produce and distribute films, while motion picture actors became major celebrities and commanded huge fees for their performances. By 1917 Charlie Chaplin had

8730-490: The video at will, or to keep it at its original sharpness. This allows the viewer to achieve the desired image sharpness with both interlaced and progressive displays. Progressive scan also offers clearer and faster results for scaling to higher resolutions than its equivalent interlaced video, such as upconverting 480p to display on a 1080p HDTV. HDTVs not based on CRT technology cannot natively display interlaced video, therefore interlaced video must be deinterlaced before it

8827-403: The viewer does not notice the interruptions due to flicker fusion . The apparent motion on the screen is the result of the fact that the visual sense cannot discern the individual images at high speeds, so the impressions of the images blend with the dark intervals and are thus linked together to produce the illusion of one moving image. An analogous optical soundtrack (a graphic recording of

8924-420: The – arguably better known – French brothers Auguste and Louis Lumière with ten of their own productions. Private screenings had preceded these by several months, with Latham's slightly predating the otherss'. The earliest films were simply one static shot that showed an event or action with no editing or other cinematic techniques . Typical films showed employees leaving a factory gate, people walking in

9021-488: Was clear. After the final flurry of black-and-white films had been released in mid-decade, all Hollywood studio productions were filmed in color, with the usual exceptions made only at the insistence of "star" filmmakers such as Peter Bogdanovich and Martin Scorsese . The decades following the decline of the studio system in the 1960s saw changes in the production and style of film. Various New Wave movements (including

9118-549: Was introduced in 1833 with the stroboscopic disc (better known as the phénakisticope ) and later applied in the zoetrope (since 1866), the flip book (since 1868), and the praxinoscope (since 1877), before it became the basic principle for cinematography. Experiments with early phénakisticope-based animation projectors were made at least as early as 1843 and publicly screened in 1847. Jules Duboscq marketed phénakisticope projection systems in France from c.  1853 until

9215-947: Was swift. By 1930, silent film was practically extinct in the US and already being referred to as "the old medium." The evolution of sound in cinema began with the idea of combining moving images with existing phonograph sound technology. Early sound-film systems, such as Thomas Edison's Kinetoscope and the Vitaphone used by Warner Bros ., laid the groundwork for synchronized sound in film. The Vitaphone system, produced alongside Bell Telephone Company and Western Electric , faced initial resistance due to expensive equipping costs, but sound in cinema gained acceptance with movies like Don Juan (1926) and The Jazz Singer (1927). American film studios, while Europe standardized on Tobis-Klangfilm and Tri-Ergon systems. This new technology allowed for greater fluidity in film, giving rise to more complex and epic movies like King Kong (1933). As

9312-458: Was the introduction of "natural color," where color was captured directly from nature through photography, as opposed to being manually added to black-and-white prints using techniques like hand-coloring or stencil-coloring. Early color processes often produced colors that appeared far from "natural". Unlike the rapid transition from silent films to sound films, color's replacement of black-and-white happened more gradually. The crucial innovation

9409-485: Was the three-strip version of the Technicolor process, first used in animated cartoons in 1932. The process was later applied to live-action short films, specific sequences in feature films, and finally, for an entire feature film, Becky Sharp, in 1935. Although the process was expensive, the positive public response, as evidenced by increased box office revenue, generally justified the additional cost. Consequently,

#358641