Monday, May 10, 2010

Introduction to video!

1. The video format we will be using this term is Digital Video, what is the other, older format that was used recently.
Older format of video that was used recently is analog video.

2. Describe the difference between the two formats
The difference between the two formats are that analog technologies record waveforms as they are, while digital technologies convert analog waveforms into sets of numbers, recording the numbers instead.

3. What are some advantages of digital video.
Some advantages of digital video are: learning as moving pictures and sound is more effective than stills. The footage can be updated or changed with ease. They add a whole new dimension to presentation since it can be easily incorporated into computer presentations. Network capabilities, presentations can be distributed rather easily.

4. What is meant by frame rate in video
Frame rate is the number of frames or images that are displayed per second. When a series of pictures is shown to us-humans,  the pictures get shown like an animation instead of different images. That is what frame rate is meant in video.

5. Do all applications use the same frame rate, explain your answer
The higher the number of frames playing per second, the smoother the video playback appears to the user. Lower rates result in a choppy playback. As a reference point, film uses 24 frames per second to allow the viewer to perceive smooth playback.

6. What is meant by resolution, how is it measured.
It is an idea that continues to baffle even graphic artists. In terms of framework of editing photos, resolution is a measurement of the output quality of an image. The units used to measure resolution are units such as: PPI (pixels per inch), DPI (dots per inch), LPI (lines per inch), and SPI (samples per inch).

7. What is the colour system called RGB
Red, Green, Blue. These are the prime colours used to make all other colours. Its name RGB came from additive primary colour. 

8. Explain the video standards PAL, NTSC, and SECAM, what are the main differences between them.
PAL: Is short for Phase Alternate Line, it is an anlogue television encoding system used in broadcast television systems in large parts of the world.
NTSC: It is named for the National Television System Committee and it is also an analog television system mostly used in North America, South America, Burma, South Korea, Taiwan, Japan and Pacific island nations and territories.
SECAM: It is the french for Sequential Colour with Memory, it is an analog colour television system first used in France.
The main difference between the three is that they are all used in different countries. Another difference is the number of frames per second.

9. Which standard do we use in Australia?
In Australia we use PAL.

10. For what type of video camera would you need to have a Video Capture Card in your computer to download video?
For an analog camera we would need to have a video capture care in our computer to download the video.

11. Why don’t we need a video capture card for the video we will be doing at school.
We dont need a video capture card for the videos we will be doing at school because we will be using digital cameras and mobiles which easily connect to the computer by a cord.

12. What is an IEEE 1394 port
It is a port for connecting devices to your personal computer.

13. Why do digital video cameras use video compression
Video compressions are used to reduce the size of the data in digitized frame or series of frames fo a video/audio. So that it is easier to transfer or send.

14. Describe what a codec is.
Codec is a technical term for compression/decompression. It also stands for compressor/decompressor and codec/decode. All these mean the same thing. A codec is a computer program that shrinks large files and makes them suitable for you computer.

15. What is meant by generation loss, where does it happen?
Generation loss is when the quality and potential increase of file size between subsquent copies of data are loss. Anything that reduces the quality of represtation when copying can be considered a form of generation loss. It is mostly in analog systems, even with the best equipment; generation loss does occur.


 

Video Idea 1

My idea was to make a tutorial on:  how to annoy the librarians??
but Julie found it too boring...so we are not doing this idea, even though it was a great idea in my opinion by Julie didnt like it..so we will think of some other idea...:D

Thursday, May 6, 2010

Video =]

Change of plan!

Now Julie and I will be doing a tutorial...fairytale seemed too hard...
If you guys have any ideas for tutorials please post them...thanks :D

Tuesday, May 4, 2010

VIdeo =]

We have decided to do a fairytale...some ideas we got for fairytales were:


Cinderella - too many characters needed...


Snow white- too many characters needed...


Little Red Riding Hood- the final choice...


Julie- Wolf and Grandmother
Kritika- Little Red Riding Hood :D
We planned to video it on one of the weekends at either Julie's or my place :D

Thursday, April 22, 2010

What to look for in a camera phone?

In a camera phone megapixels arent everything, they are only half the story. There six main thing which make a best quality camera.
1). AutoFocus:
It makes the camera focus on your subect perfectly and helps to avoid blurred shots. If the photo you are taking is going to be actually used for something then you need autofocus. In this case megapixels do not matter, if your phone doesnt have autofocus, the photos will look terrible. It'll be suprising to see how many camera phones dont have autofocus so just dont assume make sure your phone does.


2). Dual LED or Xenon flash:
Seeing that most photos from a camera phone are taken in low light conditions i.e. parties, clubs etc, a high quality flash is essential. Standard LED just wont work, because they throw out less light than your camera's screen. The best type of flash Xenon, it produces a much brighter burst of light, which helps your camera phone take great photos even in the dark. But the weakness of Xenon is that it wastes battery to quickly and it takes time to reset. In between the two types of flashes is the Dual LED flash. It is twice as better as normal LED flash  but 1/1000th that of Xenon. It has the advantage of being able to run continuosly so it can be used for videos and still photos. It's alot cheaper than Xenon.  


3). White Balance, Exposure, and Preset Scene Modes:
If you prefer to take pictures out in the sun, you would need a camera phone that will let you tweak white balance or exposure settings becuase if it doesnt than over exposed shots will tend to look completely washed out. Make sure you that least your camera phone includes the cloudy, sunny, incandescent and fluorescent settings.


4). Image stabilization:
Image stabilization is needed if you do not want the photos that are blurred. Camera phones produce poor results if they are placed on a tripod or the camera taker i.e. They would rarely produce a good pic...The result of you taking a picture would be a shaky hand taking blurry pics.
Image Stabilization cant prevent blurred pics completely, but it can do a great job in the minimizing the blur. If you want good photos check that your camera phone has image stabilization in the specs.


5). Mobile Gizmos!
A camera pjhone is not just a camera it is also a phone, so that means you can upload your pic to different sharing sites as well as social network sites such as Facebook. Your camera phone to be able to be a great phone it should include:
Fast Internet Conenction. Wifi and 3G.
Built-in support for image sharing Web sites
An easy to use user interface.
You might also want automatic geo-tagging, so that it can stamp the location you took the pic at, with the time and date it got taken. But this is not a necessary feature, it is only if you need it. Other features that you may want our features such as photo editing, ten to be gimmicky at best- there are alot of thigns you can do on a 3" screen! So these things are hard to get in the one phone, so dont really worry about these. Features you might want and arent easy to get are features such as: red-eye deductio and smile detectition but they are not important.


6). MEGAPIXELS!
Megazpixels were purposely left till last, because people obsess about them too much. A good quality 3 megapixels camera will take way better pictures that a poor quality 8 megapixels camera. If you are looking for good quality pictures you should buy a camera phone with a minimum of 5 megapixels camera. If you plan to buy any smaller your pictures wont be able to capture enough detail. They'll be alright but not great. But if you find a 5 megapixel camera and it doesnt have the five feautures shown about, avoid it!
Going up the scale, 8 megapixels has become more popular in 2009, while Sony Ericsson and Samsung now have 12 megapixel camera phones in the shape of the Sony Ericsson Satio and the Samsung Pixon 12. Both of these phones are pitched as high-end camera phones and so have a wealth of camera-related extras, making either of them excellent choices. Whether you need 12 megapixels, though, depends on what you want to do with your camera phone. If you’re looking for perfect pics, you’d be better get a digital camera. However, the newer 12 megapixel camera phones are at least as good as low end camera phones from a few years ago, so if that’s the level of quality you’re after, then the 12 megapixellers will do you nicely.
The minium set of features you need for a great camera phone are the following:
8 megapixels (5 at a pinch)
auto-focus
image stabilization
a nice range of preset scene modes (and the more manual control you have over exposure and white balance settings, the better)

xenon or dual LED flash
good quality optics
fast Internet connection
easy to use interface

The phone I would want....for my daily use and for a good camera is LG GD900!
It has all the features I need and I want...=]

Tuesday, April 20, 2010

TERM 2!!

HEYY!!
From now on term 2 work will be posted :D
this is just for the seperations sake...

My Partner!!

Heyy!!
For the new video assignment i am partnered with Julie Lichaa!!
Awesomee!!
Byee..:D