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. M

    Calculating Video Recording Capability of 4500 ft Object w/ Camcorder

    I am working on this as an outside of school project. An object is 4500 feet away from the video camera. Will my video camera be able to video record it? I have no idea how to calculate this, and I seriously need some help in understanding this. Please include any math equations you use to...
  2. G

    Moonlander new video (very funny)

    In 1969 when Armstrong first landed on the moon, it was the biggest event of our time. It left everyone watching in awe. The moon lander, a machine that looked like a miracle in technology at the time, is nowadays the technical equivalent of something so small and insignificant as a Furby toy...
  3. H

    Tracking an object in a recorded video

    Hi guys, i stumble across this forum searching for a way to tag an object in a recorder video and track it as it goes. Can i check is this possible to do ? for example i had a video of my 2 dogs playing fetch. is it possible to tag both my dogs and the stick and track them throughout...
  4. thrill3rnit3

    UCCS Video Lectures | Math Courses | Register Now!

    Video Lectures from the University of Colorado at Colorado Springs, ranging from Calculus I and Discrete Mathematics all the way through Real Analysis and Chaotic Dynamical Systems. http://www.uccs.edu/~math/vidarchive.html You do need to register to access the videos. Good stuff.
  5. I

    News Exploring an Unseen Destination: Where is this Place? (Video)

    https://www.youtube.com/watch?v=yZfmYq7O0WU
  6. A

    Knock-off video games are awesome

    I just made a knock-off of Minesweeper called Gopher Hunter. It's pretty sweet because the "mines" move around and the board is updated in real time. It's pretty fun... at least as fun as the original. Yay! Anybody else write little things like this from time to time? Care to share your ideas?
  7. I

    Dr. Michio kaku's video on transitioanl civilizations

    this has to be one of the most profound videos I've ever seen (possible repost but I couldn't resist) whats facinating is that we are currently at a transitionary period in this century. However it brings hope to a currently shunned global union gov body.
  8. Evo

    Watch the Amazing Scuba Cat Video

    Check out the Scuba Cat video! http://animals.howstuffworks.com/pets/scuba-cat.htm
  9. M

    Audio Video Receiver Power Limiting

    If you have ever seen the benchmark of an audio video receiver, you will see how the power drops off as more channels are driven at the same time. For example, a benchmark done on my receiver, the Yamaha RX-V3900 showed 189 watts into one channel, and only 88 watts into seven channels. Is...
  10. G

    Microsoft's Natal Video: Video Games Getting Weird?

    http://www.viddler.com/explore/Joystiq/videos/1118/ Wii is coming out with the motion plus and Microsoft has a new device which provides somekind of a virtual reality experience ... now I am not an avid gamer but the first impression that I am sensing from the Natal video is that it seems...
  11. Gamma

    Music Background music for my video on physics

    Hi every one, This question is not related to politics. However I am looking for a background music for my video on physics. I love the background music in this web site:- http://www.origenmusic.com/background-music.html Do you know a place to download this music (if it is freely...
  12. Cyrus

    Insane YouTube Videos - WARNING: Don't Watch if You're Squeamish!

    Warning: Don't watch these videos of you are squemish! Lately, I find myself addicted to watching all sorts of off the wall videos on youtube. Motorcycle crashes, airplane crashes, car crashes, train wrecks. Some of these videos are INSANE! This guy had a head on with another motorcycle...
  13. R

    What type of signals are needed for transmitting and receiving data from Mars?

    I was wondering what kind of things you would need to transmit to a satellite or something on Mars and get video and whatever other signals back from there. Like transmit controls there for a rover to take and possibly to bring it back. So for the journey there and back.
  14. E

    How to transmit video long distance for cheap

    I am looking to build or Gerry-rig up a system to transmit a composite video feed from a car over a distance of 1 mile with a fair amount of physical barriers between transmitter and receiver. Pre-made systems that I've been able to find have been ridiculously expensive ($3k). So I'm looking...
  15. V

    Free Video File Converter - Convert MOD to WMP

    Are there any truly free video files converter out there? I have seen many that give you a trial version but for the full version you must pay. I am trying to convert MOD files from my camcorder to something I can watch on WMP.
  16. Ivan Seeking

    Would you do this? Video of tower-climbing excavator

    http://img262.imageshack.us/img262/2758/excavator1.jpg http://img262.imageshack.us/img262/1928/excavator2.jpg http://img262.imageshack.us/img262/2980/excavator3.jpg http://img262.imageshack.us/img262/5326/excavator4.jpg
  17. Artlav

    Explosion video phantom light?

    Frames from the latest MythBusters episode, an explosion where they fuse some plates together. You can see the phantom flash high above the explosion place. What is it? It appears to be in a right place for a lens flare, but doesn't look like one.
  18. F

    A good video to help one understand time dilation

  19. M

    Discover the Power of Educational Videos at HowStuffWorks and Beyond!

    Sometimes a concept that I'd been trying to understand for about half an hour I grasp in about 5 seconds by watching an animation of it in action. Videos are a rapid way to learn in my opinion. Heres a really good site I've found http://videos.howstuffworks.com/ Anyone know any other good sites...
  20. F

    Video on the Large Hadron Collider

    http://www.youtube.com/watch?v=qQNpucos9wc&feature=rec-HM-r2
  21. F

    Good video on superconductivity by Dr. Kaku

    This video is not anything new to anyone on this forum, but I still thought it was a good video worth watching.
  22. L

    What are the available video lectures for Calc I & II at NC State?

    Hey I found these video lectures from Calc I & II awhile back from NC state, they might not be the greatest as the classes seemed to be oriented to learning how do problems not really learning the theory behind things. But they come in handy if you miss a lecture...
  23. C

    US 'cell assault' video released

    http://news.bbc.co.uk/1/hi/world/americas/7917295.stm This video is just amazing. Police officers are supposed to be showing an example to the rest of society, and not abusing their power. This guy should be locked up!
  24. T

    Peruvian video of a small alien

    http://xmb.stuffucanuse.com/xmb/viewthread.php?tid=5929 Seen this linked on a site. Most of us have figured it out, can you? Considering the nature of these forums, you guys should have no problem figuring it out.
  25. L

    Video, Converting .3G2 File Extensions

    My wife and I have cell-phones that take really good video. Unfortunately, the videos are in the ".3G2" format, and when we try to download them to our computers, the computer can't play the video. It is my understanding that we could play them with Apple's QuicktimeTM, but I had that software...
  26. T

    Video about how to find centroids?

    dose anyone know a website that has a video about how to find centroids?
  27. C

    Vote for "Game of the Year" 2020 | Last Year's Results

    So: I do a "game of the year" poll every year. The poll gives you a list of nearly every game released last year, and asks you to make a list of your favorites (up to your top 20). If you would like to vote in it (and if it's okay for me to link this) you can click here to vote. For...
  28. L

    MP3 Video Files Freeze Up In Windows Movie Maker

    Is there any way to fix this? I tried converting the mp3 files to wmv files last night, but it reduces the picture quality by a lot so the picture quality looks all fuzzy. Is there any other free video editing software out there that supports mp3 video files?
  29. L

    Video lectures of Structure and Intepretation of Computer Programs

    Hi, I'm looking for video lectures for the classic MIT course Structure and Interpretation of Computer Programs. While MIT OCW doesn't have any videos for this course, on the internet there seems to be at least two different sets of videos claiming to be of this course. It seems that one is...
  30. Cyrus

    Aerospace Video Lecture Series

    1.1 The Space Shuttle from a Systems Engineering Perspective http://ocw.mit.edu/OcwWeb/Aeronautics-and-Astronautics/16-885JFall-2005/CourseHome/index.htm
  31. N

    Video Lectures on Statistical Physics and Quantum Physics

    is there any video lectures source which is about statistical physics or quantum physics like MIT Lectures. I found some lectures about quantum physics but these are only related with it and it couldn't be considered as essential source.
  32. marcus

    Physics law evo video (from the Perimeter quantum time conference)

    http://www.perimeterinstitute.ca/Events/The_Clock_and_the_Quantum/Abstracts/ The week ending 2 October there was a conference on time and quantum theory at Perimeter. Some who gave talks were Lee Smolin Roger Penrose Neil Turok Leonard Susskind William Unruh Rafael Sorkin ... The link gives...
  33. V

    News This video sums everything up

    http://www.youtube.com/watch?v=mg5tl87rEE4&eurl= This video need to be distributed in newpapers in swing states instead of this crap: http://www.npr.org/templates/story/story.php?storyId=95076174
  34. Doc Al

    Funny Video: 'Crazy Frog in the House' - Check it Out!

    I don't know if anyone's posted this already, but it was sent to me and it's pretty damn funny: http://uk.youtube.com/watch?v=j50ZssEojtM
  35. Ivan Seeking

    The Most Terrifying Video You'll Ever See

    Long winded, but nicely done. The Most Terrifying Video You'll Ever See http://www.youtube.com/watch?v=zORv8wwiadQ&feature=related
  36. Garth

    Like a diamond in the sky(with video)

    Like a diamond in the sky... (with video) Rosetta Spacecraft Passes Asteroid Steins . Garth
  37. T

    Watch Jesus on a Video: Is It Possible?

    Hello, Since we see a 1 lightyear -away from us- star how it was 1 year ago, Is the light emitted from surface of Earth traveling the same way? What about the effects of atmosphere? If first is afirmative, Is it physically possible (with the proper technology) to capture that light in a...
  38. I

    Troubleshooting Flickering/Blinking on GeForce FX 5200 Video Card

    I recently bought a GeForce FX 5200 for a secondary computer. I installed as suggested and the screen flickers slightly now. I've read that there are some adjustments that can be made to the bios but i am unsure as to how to do this. does anyone have any ideas? the screen comes up fine but...
  39. E

    PC restarts everytime I watch a video

    My pc restarts everytime I watch a video after 5 minutes (e.g. on youtube or if I watch a video with the windows media player) . a) I've already done a memory test (the memtest ran for 6 hours and didn't show any errors) b) I formatted the hard drive and reinstalled windows XP...
  40. Z

    A video lecture and tutorials collection site.

    hi, PHers, I found a site: http://videolectures.net/ which contain a lot of video lectures and tutorials. There are a lot video there. When it is playing a video, the slides will change synchronously.:rolleyes: I'm major in Computer vision and image Processing, hope we can communicate each...
  41. M

    How can I update my NVIDIA video drivers for better online gaming performance?

    Hey Everyone My knowledge of computers is pretty much near to nothing. I've just put Counter Strike on my laptop, which is a PC game played online. The game sometimes has to reboot due to the fact that my drivers need updating, even when I start the game it says that I may need to update...
  42. S

    New Gorgeous Video from Deep Impact

    http://www.nasa.gov/mov/260502main_nir_green_blue2.mov You may remember Deep Impact was launched in 2005 with the mission of blasting a 370kg bullet into a comet. Now it has taken a remarkable video from a vantage point of 50 million km away of a spinning earth, complete with visible...
  43. N

    Building a Motor Like the One in the Video

    I'm trying to build a motor like the one in this http://youtube.com/watch?v=h6Ev64h49wg&feature=related". I can't seem to figure out how the split ring works. From what I can tell, only one solenoid would be powered at a time, but wouldn't that be inefficient? Also if only one is powered...
  44. marcus

    Video lecture on Loop Quantum Cosmology

    LQC is the dominant approach to quantum cosmology these days, if you gauge by recent peer-review publication and citations in the professional literature. So anybody who wants to know about quantum cosmology could be well advised to get an introduction to LQC. Parampreet Singh is one of the...
  45. C

    Video inside: could someone explain how this works?

    http://www.woodencigars.com/vwftp.html I don't get it... my face was like O_O at the end of the video he uses e=mc^2 to explain how his "energy" goes into produce "mass". But can it be explained from a more mathematical/geometrical perspective too?
  46. turbo

    Is the Alleged Alien Video Real?

    A guy claims to have video of an alien, and he's going to show it to some people tomorrow. He won't let the public see it because it's going to be included in a documentary. http://media.rockymountainnews.com/drmn/content/purported-ufo-video-be-shown-friday.html
  47. L

    Music Funny Music Video: "I Want a Robot" | Must Watch!

    http://www.youtube.com/watch?v=eaGgpGLxLQw" The lyrics and video had me laughing so hard. Very well done. I want one of those robots!
  48. T

    Where can i find video lectures/animation on

    the stuff that comes after calculus 1 about convergence etc.. and building a function on 3D ?
  49. I

    Coleman's QFT lectures on video

    Coleman's QFT lectures on video! Everybody check out John Baez TWF 264 where he reports Coleman legendary QFT lecture notes are now online!
  50. L

    Maximizing YouTube Visibility: Tips for Optimizing Tags in Your Videos

    I made a video for you tube. When I type in the tags it doesn't show up under the searches. Please help me fix this.
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