What is Video: Definition and 722 Discussions

Video is an electronic medium for the recording, copying, playback, broadcasting, and display of moving visual media. Video was first developed for mechanical television systems, which were quickly replaced by cathode ray tube (CRT) systems which were later replaced by flat panel displays of several types.
Video systems vary in display resolution, aspect ratio, refresh rate, color capabilities and other qualities. Analog and digital variants exist and can be carried on a variety of media, including radio broadcast, magnetic tape, optical discs, computer files, and network streaming.

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  1. F

    Medical How Does Nicotine Affect the Brain and Body?

  2. F

    A very good video on quantum mechanics

    http://www.youtube.com/watch?v=TMwrl8Yc3Bw&feature=related
  3. F

    Medical How cocaine works on the brain video

    http://www.youtube.com/watch?v=7A4Qxx7j63Y&feature=related
  4. PainterGuy

    Which application used to make the video

    hello everyone; is there anyone which can tell me what application was used to create this video... i think this is cool way to illustrate your problem or help someone...i often seek help from my friend who is settled in another country...sometimes i has to attach so many individual...
  5. F

    An awesome video on the double slit experiment

  6. F

    A good video on the history of quantum physics

  7. F

    Unlocking the Mysteries of Gravity: A Must-See Video Guide

  8. F

    A good video explaining time dilation

  9. F

    A good video on the Higgs Boson

  10. marcus

    Spin Foams and Noncommutative Geometry (video, Marcolli at Perimeter)

    Marcolli has been a frequent collaborator with Alain Connes, and is now math prof at Caltech. Since NC geometry has yielded the Standard Model particles, plus some predictions, there is interest in basing the NC matter on spinfoam quantum geometry http://pirsa.org/11020110/ Spin Foams and...
  11. rhody

    Ted Video How to make work-life balance work

    http://www.ted.com/talks/nigel_marsh_how_to_make_work_life_balance_work.html?utm_source=newsletter_weekly_2011-02-08&utm_campaign=newsletter_weekly&utm_medium=email" Nigel has a dry sense of humor, even though a few lines I have heard in other contexts before, IMHO, worth watching...
  12. M

    Khan academy video mistake?

    Homework Statement http://www.khanacademy.org/video/2-dimensional-projectile-motion--part-3?playlist=Physics Skip video to 4:40. He says that the average velocity in the horizonatal direction is the same as the initial velocity (7.07m/s) because it doesn't change. but wouldn't the velocity...
  13. Ivan Seeking

    Medical Video Game Addiction Tied To Depression, Social Problems And Poorer Grades

    http://www.medicalnewstoday.com/articles/213929.php
  14. M

    How can I display milliseconds on my HD camcorder for outdoor video monitoring?

    I'm surprised we don't have an Equipment category on PF. Much of working with Physics is equipment for monitoring, testing, calculating, etc. Then there's not just the equipment (hardware) but software, operation, source of supply, repair, calibration, rentals, etc. So let me throw that in the...
  15. N

    Composite Video Output Circuit: Get Ideas & Solutions

    Hey Guys, Does anyone have a general idea of the circuit needed to generate a composite video signal?
  16. G

    Is it Possible to Have Statics in Captured Video?

    I recently watched Fourth Kind and was left wondering if it's possible to have statics in captured video. From my understanding, static is mostly associated with radio interference when signals interfere with one another on similar frequencies. Since a captured video records visible light (part...
  17. N

    Capturing the speed of sound and speed of light on video.

    Hi! Consider a high-speed camera set up to record an explosion and the resulting shockwave emanating from the explosion. In the same frame you can see the shock wave as well as people in the distance. Is it true that the people in the distance wouldn't hear the sound of the explosion until...
  18. DaveC426913

    Help Video editing software for Windows 7

    I need to do some editing of videos I've got in .VOB format from a minicam. I need to do the usual fading, video marking in and out, and inclusion of still slides. One of the more sophisticated things it looks like I need to do is to crop dynamically over time (i.e. crop the video down to...
  19. I

    Academic Earth- A Collection of Free Video Lectures on Many Subjects

    Hey guys. I just stumbled upon this site which I find really awesome. Its called Academic Earth. This site has a collection of video lectures on many different subjects: Math, Science, Engineering, History, Philosophy and many more. It has lectures from M.I.T, Berkeley, Harvard, Yale and more...
  20. eri

    Programs So you want to get a PhD in physics? The video

    OK, 'fess up. Which one of you made this? I'm sending it around to the other grad students in my program.
  21. Q

    Learn Topology with Our Ongoing Video Series - Perfect for All Levels!

    Hello, I am currently creating an ongoing series of Topology video lectures and looking for students of an appropriate level for some accurate feedback. They are much in the style of the popular Khan Academy. Link Thank you for your time.
  22. G

    Stream video from Arduino wirelessly

    I want to make an RC car that I can control in two ways. One would be over local wifi and I am actually watching the car and controlling it with my iPhone using touchOSC. The Arduino is using the http://asynclabs.com/" to connect to the wireless network at home or Ad-Hoc when no network is...
  23. D

    Extracting video from damaged VCDs

    what's the best way to extract video from damaged VCDs? the final video needs to be in mov, mpg, mp4, wmv or similar format...
  24. N

    Video of spider heart beating - real?

    https://www.youtube.com/watch?v=Zw9UUuUpmcQ Seems like it is faked, but I dunno. BTW, the uploader explained that the noise in the background is a howler monkey and you'll hear the guy making a howling sound back early in the video. Sounds strange, but anyway. That's the spider's exoskeleton...
  25. F

    Information Abou FTL Video Needed

    Hello, I am searching for the equipment used in the Youtube/BBC video posted below. I have looked for contact info at Cologne University, but a lot of their sight was not translated over to English. Specifically, I am searching for the barrier used in the video. Also I hope this is the...
  26. C

    Whats going on in this video with the water ?

    ok so this guy throws up a cup of hot water at like 45 below zero F. And I am not sure what exactly is going on . Does the water first evaporate really fast and then freeze into tiny ice crystals. When its really cold outside the humidity is really low, so does stuff evaporate really quickly.
  27. M

    RF Detector: Understanding Video Bandwidth

    what is the meaning of Video bandwidh for rf detector?
  28. P

    Video Lectures for Quantum Mechanics?

    Are there any? If so, which are the best ones? (Upper Division Undergrad)
  29. T

    Speed of light & streaming video

    If one were to travel towards a star at the speed of light, and the spaceship beamed to Earth a continuous video stream of the voyage with an on board camera running not @ 25 FPS but at 300,000,000 FPS; Then what will the person on Earth watching the streaming video see as the voyage progressed...
  30. B

    Find Space Video: Gravityless Environment 5+ Mins

    Greetings and excuse me if my question doesn't belong here. I've been searching for quite a while but I can't find a video that matches this describing: A footage of a more than 5 minutes lasting video in a gravityless environment. The camera may not stop recording once during the 5 minutes...
  31. P

    Seeing an ufo from an airplane window (video)

    Im not sure what this is: http://www.dumpert.nl/mediabase/1092641/c3edd207/curious_stroboscopic_effect.html Maybe this is an explanation for some sightings seen by airplane passengers. Or maybe it is an artifact of a bad videocamera and you wouldn't see it with the naked eye.
  32. marcus

    4d gauge theory: Witten video on his current research

    Peter Woit ("Not Even Wrong" blog) reported today on two recent talks by Edward Witten which are available video online. Here is the link to Woit's blog, which gives an brief overview of what the talks are about. http://www.math.columbia.edu/~woit/wordpress/?p=3107 In case anyone is...
  33. wolram

    Treasures of the Anglo Saxons | BBC iPlayer

    http://www.bbc.co.uk/iplayer/episode/b00t6xzx/Treasures_of_the_Anglo_Saxons/ Well worth watching.
  34. B

    Exploring Calabi-Yau: Is It Correct or Just a Guess?

    what do you think of this explanation about calabi-yau and other 4 dimensions 1) http://www.youtube.com/watch?v=aed3SGEifpE&feature=related 2) http://www.youtube.com/watch?v=BTY8aqjBotQ&feature=related 3) http://www.youtube.com/watch?v=TUl_8L86d2M&feature=related is it correct? or is...
  35. S

    What are some free and legal video lectures for first year physics?

    So, after quite a while of internet browsing over the past couple of months I've accumulated quite a hefty collection of resources for learning first year physics & I think it's about time I posted it as I've found a few of these resources practically nowhere on the internet. As far as I can...
  36. L

    Reducing RF power of video transmitter

    Hi, I have a tiny (.6"x.6"x.125") 2.4ghz video transmitter that puts out about 1mw or rf power. I want to severely reduce the output power in order to reduce the range of this transmitter. instead of a few hundred feet line of sight range I would prefer no more than 10ft, and as little as 2...
  37. N

    Can You Switch Your Brain's Perception? Left vs. Right Brain Video Experiment

    http://www.readnrock.com/?p=38 It's probably been posted before, but I still find it interesting. I can easily switch between the two, but I saw it going clockwise first. I don't believe that this proves my iq is over 160 (I don't believe in iq tests anyway...) I'm going into...
  38. G

    Music Nerds Rock! - Check Out the Music Video Here

    "Nerds Rock" I thought this was cute/funny. Go youtube. http://www.youtube.com/watch?v=iUidEDWDlcA"
  39. L

    Why no video streams of space?

    Video encoding hardware is cheap and inexpensive. Even the tiniest trickle of bandwidth is enough for crisp, sharp, colourful moving images. http://www.boston.com/bigpicture/2010/05/checking_in_on_saturn.html Browsing these images you really wonder our cameraman in space is just taking...
  40. S

    Vote for Shawn Harris: Personal Trainer at SIFF Online Film Festival!

    Vote for my video please! :) Hello Everybody! So I am in the Seattle International Film Festival Online, and for my video to win, I need the most votes with the highest rating. I created this video with a friend during a summer internship for a show on PBS called "In the Mix." It is called...
  41. M

    Illuminate Your Video Inspections with a 30/60Hz Strobe Lamp

    I need to illuminate a scene for a video inspection. Unfortunately it's a big scene and I don't have unlimited power. I though of using a strobe light triggered at 30Hz (or ideally 60Hz) and synced from the frame pulse of the video camera - so I get a bright pulse of light as each image is...
  42. L

    Music What's your favorite part of this music video and give the formula for that part

    Consider the following music video: And describe what kind of theory and/ or which Law of science your favorite part is about?
  43. W

    QFT Video Lectures with David Tong

    Here are some cool video lectures on introductory QFT: QFT Video Lectures
  44. marcus

    Henderson video: spinfoam approach to cosmology

    Henderson gives a good talk. He's been working with Abhay Ashtekar on reformulating loop cosmology as a spinfoam-like path integral---also using GFT (group field theory) where a parameter shows up that may have physical interest (possible connection with the cosmological constant). He got...
  45. marcus

    Erik Verlinde video on entropic force gravity

    http://pirsa.org/10050022/ The Emergence of Gravity Erik Verlinde 12/05/2010 "Theoretical insights originated from the study of black holes combined with developments in string theory indicate that space time and gravity are emergent. A central role in these developments is played by the...
  46. marcus

    Krasnov framework for asymptotic safety in QG (Perimeter video)

    http://pirsa.org/10050002/ Deformations of General Relativity Kirill Krasnov 2010-05-05 "I will describe a very special (infinite-parameter) family of gravity theories that all describe, exactly like General Relativity, just two propagating degrees of freedom. The theories are obtained by...
  47. E

    Space Travel Videos: Find 10-20 min Video for Seminar

    Anyone know of a good 10-20 minute video on space travel? Anything that provides sufficient information on space crafts, progression of space travel, future space travel? Much appreciated, thanks. I need to show a video for my Space Travel seminar.
  48. B

    Violent video games make you can you guess?

    I read, some time ago, a research unveiled by the Centers for Disease Control and Prevention (CDC) that claims video game players were more likely to be overweight, depressed and introverted. but this article says...
  49. rhody

    Stephen Wolfram: Computing a theory of everything TED Video April 2010

    Thought you might like this... This http://www.ted.com/talks/stephen_wolfram_computing_a_theory_of_everything.html?utm_source=newsletter_weekly_2010-04-27&utm_campaign=newsletter_weekly&utm_medium=email" by Stephen Wolfram is about 20 minutes long, but the most interesting parts are from...
  50. G

    Undergrad Real Analysis video course from Harvey Mudd College

    There is a Harvey Mudd College first semester real analysis course posted at http://www.youtube.com/user/Learnstream, based on the classic text Principles of Mathematical Analysis (Baby Rudin), by Walter Rudin. Professor Francis Su, who delivers these lectures, does a great job helping to tie...
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