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306 044 resultados para test em vídeos

TV colour bars test card screen. SMPTE Television Color Test Calibration Bars. Test card. SMPTE color bars. Graphic for footage video and 1Khz Sine Wave
00:28
Pipette with liquid inside drop water in test tubes. Close up macro.
00:14
4K Close up of pencil being used on a multiple choice test paper
00:33
Please stand by screen display featuring a tv test pattern with please stand by message. Suitable for indicating waiting times in presentations. 4k looping
00:10
Generic 3d car crash test with crashtest dummy. Car destruction. Realistic 4k animation.
00:10
Woman face, blue eyes and vision focus, thinking idea and contact lenses to see, eyesight and awareness. Closeup macro on face, eyeball and optometry test stare with awake perception of human anatomy
00:11
over shoulder doctor writing on a form for a blood test
00:18
Close-up of the Row of Students Writing in the Notebooks, Taking Exam. Focus of Hands with Pens. Shot on RED EPIC-W 8K Helium Cinema Camera.
00:12
Lab assistant makes urgent blood test for detection of antibodies and infections
00:29
Please Stand By - Retro Television Test Pattern with Static and Glitch Effect.
00:10
An abstract television test pattern displays vibrant color bars with digital glitches and static noise.
00:15
hand with pencil taking a multiple choice test
00:18
An engineer in a crash test lab uses a car crash test system to simulate a traffic accident, to obtain the safety parameters of an eco-friendly cutting edge electric vehicle being developed.
00:12
A scientist in his laboratory holds a test tube containing DNA and is able to control the evolution of man thanks to holography. Concept of: DNA, technology, augmented reality.
00:14
Drop chemical fluid into laboratory test tube , science biological or chemistry research concept
00:16
Analog capture (intentional heavy distortion fx): a tv test pattern (also called cinescope) made of blocks and shapes of varying dimensions.
00:12
Scantron Test Paper
00:16
Retro analog television test pattern with color bars and please stand by text featuring static noise.
00:10
Inserting the test sample in the sample container into the pre paid envelope ready for sending to the Bowel Cancer Screening Programme for testing.
00:25
Test results, working mom Unexpectedly Reading a pregnancy test Sitting in the bathroom, Slow motion Pregnant woman Analyzing test strips Women's health centers, Test
00:08
Scientist in blue gloves holds rack of blue liquid filled test tubes amidst vapor
00:08
Thyroid hormone t3 and t4 molecules circulate blood vessels representing endocrine health with detailed blood test concept showing molecular structure and red blood cells supporting thyroid function
00:08
Glass test tubes with liquid on white background.
00:12
Waist up slowmo of group of multiethnic college students sitting one by one at desk in classroom writing test
00:28
Glitchy test pattern screen for please stand by break, suitable for video production, tv and film projects, broadcasting, waiting rooms, and presentations.
00:10
Streaming countdown TV test card signal pattern animation. Television Color Test seamless looping
00:14
Generic 3d car crash test with crashtest dummy. Car destruction. Realistic 4k animation.
00:10
Nurse puts a bar code on a test tube with a blood test
00:11
Tv screen with Indian Head Test Pattern
00:14
4K CRT glitch signal diagnostic screen animation, horizontal RGB scanlines and numeric line readouts, analog test interface with heavy noise, chromatic distortion and interference, broken broadcast
00:11
Retro Analog TV Glitch Background. Distorted No Signal Screen Error, White Noise Static, Flickering Color Bars Test Pattern Animation 4k video animation seamless loop
00:10
TU, MS, Side View shot of the head and shoulders of a crash test dummy
00:18
Science, laboratory and woman with beaker for medical analysis, research and medicine. Healthcare, pharmaceutical and scientist with test tube for vaccine development, chemistry and liquid results
00:17
Doctor hand taking a blood sample tube from a rack with machines of analysis in the lab background, Technician holding blood tube test in the research laboratory.
00:17
Tilting down fast to slow to a covid 19 positive antigen test on a wooden table, 23.98 fps
00:11
Taking a blood sample for testing in the tube and putting it on the stand
00:12
Lab assistant in gloves putting blood test tubes in rack or holder close up
00:10
Airbag Deploys Closeup 2
00:29
Vintage television test pattern overlay with colorful bars and glitch effect moving vertically with hand drawn scribbles creating analog distortion seamless loop animation
00:15
Retro television broadcast test pattern featuring vibrant vertical color bars and a grayscale static section, indicating signal loss or display calibration
00:05
Close-up of the process of taking blood from the vein from man for biochemical blood testing. Preparation for blood test with by phlebotomist technician doctor in medical clinic.
00:56
Retro TV test pattern please stand by screen suitable for showcasing broadcast standby or vintage television interruptions in presentations, videos, or graphics related to media and technology
00:20
Process of express fast coronavirus covid Antigen AG PCR testing examination at home, COVID-19 swab collection kit, test tube for taking OP NP patient specimen sample, testing carried out
00:06
Senior woman, eyes and focus for eye exam, test or assessment of vision, eyesight and optometry for elderly patient. Eye, closeup and old lady thinking with wrinkles, natural skin and wellness
00:05
Male engineer simulates and watches process of traffic accident using digital tablet with modern system to change the safety parameters. 3D animation of electric car experimental crash test in lab.
00:14
Close Up Tracking Of Woman Holding Positive Pregnancy Test In Public Bathroom
00:10
TV test card signal pattern animation. Please stand by starting soon streaming countdown. Television Color Test Calibration Bars. seamless looping
00:14
Doctor in medical PPE suit holds a covid antigen test of care testing. Lab performing rapid diagnostic test for antibodies to detect presence of antigens Coronavirus disease.
00:14
Blood samples in test tubes rotates in a centrifuge to separate blood from plasma for further analysis. Scientists biochemical laboratory manufacturing a vaccine against the covid-19 coronavirus.
00:10
TV test tablet with glitch interference on lcd screen background animation - new quality digital twitch technology colorful video footage
00:10
Analysis of the PH and chlorine of the water in a swimming pool in Summer. Check quality of water with test strip, comparing results.
00:15
Blood samples in a test-tube centrifuge. Lab environment. Looping animation 4KHD
00:10
Bright RGB color changing animated background for screen test
00:12
Team of Research Scientists Working On Computer, with Medical Equipment, Analyzing Blood and Genetic Material Samples with Special Machines in the Modern Laboratory.
00:13
The blood analysis. Analysis to identify the HIV virus.
00:13
scientist take test tube
00:10
Scientist with gloves injecting liquid sample into a plastic gradient lab for test
00:09
Closeup, hands and a couple with pregnancy test results, comfort and reading together. Family, support and a man and woman with information on a baby, pregnant and care on the sofa for infertility
00:06
Selective focus shot of female scientist in protective mask and glasses pouring blue liquid in test tubes with pipette during microbiology experiment in laboratory
00:18
Classic television test pattern with 'SIGNAL LOST' message, showing broadcast interruption
00:05
Evaluation or measurement concept. Student testing in exercise taking fill in exam at school or university in test room, writing document exams paper at campus classroom, education back to school idea
00:09
Blood, research and hands of scientist in laboratory with sample for science, medical study or investigation. Healthcare, pharmaceutical and person with DNA test vial, RNA analysis and writing notes
00:09
factory and industrial complex with passing clouds with test cards
00:08
Lab technician in blue gloves labeling urine sample test tube with barcode in modern medical laboratory for diagnostic analysis and research.
00:13
A person brings vision glasses to his eyes. Moving from out of focus to focus. View of the First person view on the vision test table.
00:06
A beautiful woman takes a pregnancy test and as soon as she reads that she is pregnant, she explodes in a moment of happiness and joy for the future birth of her child. Concept of: birth, life, family
00:12
Scientist hands with microscope close-up shot in the laboratory
00:13
Lockdown, CU, SLO MO, head and shoulders of a crash test dummy hitting a deployed airbag
00:37
Generic 3d car crash test with people driver. Car destruction. Realistic 4k animation.
00:10
scientist hand putting test tubes ampoules bottles in pcr machine Spbas. dna test, molecular biology technology. concept examining, diagnostics, pharmaceutical laboratory
00:17
Optometry, eyesight and eye test for senior woman, optometrist and slit lamp. Doctor, specialist and healthcare professional for ophthalmology, prescription and optician for eyecare appointment exam
00:06
Warning symbol for chemical hazard on test tube, chemical in factory
00:08
Unrecognizable man walking on treadmill during cardiac stress test
00:14
Medical Science Laboratory with Diverse Team of Professional Biotechnology Scientists Developing Drugs, Female Biochemist Working on Computer Showing Gene Therapy Interface. Back view Shot
00:16
the inspector checks the form and puts a a worst grade on a exam test
00:06
Walking, exam and students talking about results on university campus and share test information or paperwork together. Scholarship, education and group of young people or friends in discussion
00:08
Scientist holding test strip and checking result
00:14
School girl writing in book in classroom, student learning for education at table and studying for exam in notebook in class. Children doing exam on paper, creative test at desk and focus on study
00:07
Asian female virologist in protective suit, mask, glasses and gloves dripping blue liquid from pipette into test tubes while working on antiviral vaccine at desk with microscope on it in laboratory
00:23
Woman fingers pregnancy test making indoor closeup. Lady looking negative result Generative AI
00:09
A vintage television screen displays colorful test pattern bars
00:11
4k stock. Bad interface damage. No signal test pattern TV screen. Tv static animation glitch. Noise color error video with scanline effect.
00:13
Lab Research Test Tubes
00:06
Tilting down slowly to a Covid 19 positive antigen test on a wooden table 23.98 fps
00:10
after the test, the doctor puts the blood tests in a pallet
00:06
Portrait of female scientist with a pipette analyzes a liquid to extract the DNA and molecules in the test tubes in laboratory. Shot in 8K. Concept: research,biochemistry, pharmaceutical medicine
00:16
Doctor hand taking a blood sample tube from a rack with machines of analysis in the lab background, Technician holding blood tube test in the research laboratory.
00:19
A confident mature woman scientist stands with arms crossed in a well-equipped laboratory, surrounded by scientific equipment.
00:09
Blood test taking of a young patient man of a young woman doctor in a modern clinic room , assistant are behind of the doctor.
00:24
16:9 TV color bar damage glitch distortion background, abstract noise effect. (4K UHD seamless looping, computer digitally generated animation.)
00:10
Vintage “Please Stand By” test card with radial calibration pattern, sepia tone, and film dust texture
00:20
Hands, gloves and blood sample in lab with label for test, assessment or clinical analysis at pharma company. Scientist, person and glass container with dna, results and ppe with vaccine development
00:17
Hands holding pregnancy test, turning to show one line negative test, problem family planning.
00:10
An old retro vintage tv test pattern (appearing on air in case of technical difficulties), with a heavy glitch effect.
00:18
automatic hematology analyzer with glass test tubes with blood
00:12
Conceptual 4K video of a doctor holding and looking at a test tube while testing samples for presence of coronavirus (COVID-19).
00:10
Broadcast Test Card With 59-Second Countdown For Technical Breaks. Color television test pattern with Please Stand By text and countdown timer from 00:59 to 00:00 seconds.
01:00
Muscular athlete with mask running on treadmill in gym for monitoring his performance. Sportsman in sports science lab measuring his performance cardio respiratory test professional athlete
00:25
Scientists wearing lab coats and gloves are analyzing blood test tubes and taking notes in a laboratory
00:19
Smile, pregnancy test and happy couple with positive result excited for their family together. Happiness, joyful and pregnant woman celebrating with love and support from her husband with future baby
00:06