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295 246 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
TV test card signal pattern animation. Please stand by starting soon streaming countdown. Television Color Test Calibration Bars. seamless looping
00:14
Generic 3d car crash test with crashtest dummy. Car destruction. Realistic 4k animation.
00:10
Vintage “Please Stand By” test card with radial calibration pattern, sepia tone, and film dust texture
00:20
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
4K Close up of pencil being used on a multiple choice test paper
00:33
Tilting down slowly to a Covid 19 positive antigen test on a wooden table 23.98 fps
00:10
Lab assistant makes urgent blood test for detection of antibodies and infections
00:29
over shoulder doctor writing on a form for a blood test
00:18
One-minute black and white retro TV test pattern with countdown timer in center. Perfect for broadcasters and streamers countdown.
01:00
Retro tv test pattern please stand by broadcast signal. waiting screen vintage television. 4k animation video
00:10
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
Scantron Test Paper
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
Waist up slowmo of group of multiethnic college students sitting one by one at desk in classroom writing test
00:28
Retro TV screen displaying colorful vertical bars and snowy static, with 'PLEASE STAND BY' message.
00:10
Lab Research Test Tubes
00:08
Nurse puts a bar code on a test tube with a blood test
00:11
Vintage switch on off television displays a Please stand by on retro TV screen test pattern after flicking a vintage switch.
00:10
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
Streaming countdown TV test card signal pattern animation. Television Color Test seamless looping
00:14
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
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
Close Up Tracking Of Woman Holding Positive Pregnancy Test In Public Bathroom
00:10
Generic 3d car crash test with crashtest dummy. Car destruction. Realistic 4k animation.
00:10
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
Unrecognizable man walking on treadmill during cardiac stress test
00:14
TV test tablet with glitch interference on lcd screen background animation - new quality digital twitch technology colorful video footage
00:10
automatic hematology analyzer with glass test tubes with blood
00:12
Please stand by tv test pattern retro vintage broadcast. 4k animation video
00:10
Tilting down fast to slow to a covid 19 positive antigen test on a wooden table, 23.98 fps
00:11
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
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
An old retro vintage tv test pattern (appearing on air in case of technical difficulties), with a heavy glitch effect.
00:18
Glass test tubes with liquid on white background.
00:12
no signal old TV background. Television screen error. color bars technical problems, white noise. TV Distortion and Flickering Animation. Distorted TV Test Pattern Glitch: Retro Analog Static Noise
00:10
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.
00:13
Airbag Deploys Closeup 2
00:29
Technical difficulties error tv test pattern showcases a message for broadcast production, television, troubleshooting, technical difficulties, media projects, and presentations.
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
Television turn on and off. Vintage switch on, turn off television. Led Tv on and off. Lcd Tv on and off effect on black background
00:12
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
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
Closeup view 4k video of child hand with red spot reaction to conducting Mantoux test after 72 hours from injection. Nurse in blue gloves applying transparent ruler to check reaction.
00:16
Tilt up close up shot of female biomedical scientist in goggles and face mask putting test tubes with blood samples from patients tested positive for covid-19 in rack
00:06
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
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
Drop chemical fluid into laboratory test tube , science biological or chemistry research concept
00:16
Woman fingers pregnancy test making indoor closeup. Lady looking negative result Generative AI
00:09
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
scientist take test tube
00:10
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
The blood analysis. Analysis to identify the HIV virus.
00:13
Lab assistant in gloves putting blood test tubes in rack or holder close up
00:10
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
Laboratory Scientist Use Pippete for Experimental Solution Into Test Tube. Concept of Digitally Visualized Cells in Molecular Biology, Regenerative Biotechnology, Healthcare Innovation in Medicine
00:17
Female and male engineers in experimental crash test laboratory watching process of traffic accident simulation, to get safety parameters of a new electro eco-friendly car body using computer system.
00:12
Serious young female doctor in medical uniform consulting elderly male patient, showing lab test results on computer screen at checkup visit in hospital. Focused old man listening to cardiologist.
00:09
Please stand by screen with color bars pattern background with static noise
00:05
A positive pregnancy test with a pregnant woman and her man feeling happy, excited and celebrating the good news. Hugging, cheering and feeling overjoyed about having a baby together as a couple
00:11
Classic monochrome TV test pattern displaying the 'please stand by' message, simulating a vintage broadcast interruption with static and visual glitches
00:08
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
A vintage television screen displays colorful test pattern bars
00:11
Men, developer and fist bump with computer in office for programming, coding success and software update. People, online and celebration for website development, teamwork and launch of testing server
00:14
In the laboratory, a tensile test is carried out on the sample. Determination of the physical and mechanical properties of the material
00:09
Positive pregnancy test in the hands of a teenage girl.
00:19
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
Hands of a food scientist mixing experimental food samples in test tubes and petri dishes highlighting the scientific approach to food formulation and preservation.
00:06
Close-up of positive Covid antigen test in hand, rack focus
00:15
Ink Rorschach test
00:11
Distorted Television bars signal. Error on the test signal
00:16
Portrait of happy young woman looking at pregnancy test. Girl smiling after the positive result of pregnancy test
00:14
4k video no signal test pattern on TV screen; colorful flickering. Perfect for media, broadcasting, technology, communication, or entertainment industry projects.
00:10
Scientist mixes chemicals in laboratory and holds test tube with orange liquid
00:15
Tv screen with Indian Head Test Pattern
00:14
sad girl sitting on the bathroom floor with a pregnancy test. the concept of a positive or negative pregnancy test or other problems related to the position and health of women
00:13
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
Pipette with liquid inside drop water in test tubes. Close up macro.
00:14
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
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
Lab technician in blue gloves labeling urine sample test tube with barcode in modern medical laboratory for diagnostic analysis and research.
00:13
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
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
Close up unrecognizable man businessman writing paperwork report on desktop male hands signing business documents on office table student write educational test english exam studying in university
00:11
after the test, the doctor puts the blood tests in a pallet
00:06
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
16:9 TV color bar damage glitch distortion background, abstract noise effect. (4K UHD seamless looping, computer digitally generated animation.)
00:10
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
Blood samples in a test-tube centrifuge. Lab environment. Looping animation 4KHD
00:10
Scientist with gloves injecting liquid sample into a plastic gradient lab for test
00:09
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
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
Glitch static on the tv, no signal preview on the tv 4K resolution video
00:10
Drop of blue transparent liquid into test tubes in laboratory
00:15
No signal test pattern TV screen. 4k footage.
00:13
Super slow motion close up of scientist examines with pipette molecules of DNA sample substance in test tubes during biochemical analysis of experimental data research in laboratory at 1000 fps.
00:12
TU, MS, Side View shot of the head and shoulders of a crash test dummy
00:18
Glass test tube in laboratory with blue color ink inside. Close up macro.
00:20
Conceptual 4K video of a doctor holding and looking at a test tube while testing samples for presence of coronavirus (COVID-19).
00:10