Thursday, October 17, 2013

How to adjust the lighting on a digital camera video recording?

video editing software noise reduction
 on noise cancellation in a non-HiFi application: Diesel exhaust noise ...
video editing software noise reduction image



MonroeGirl


So I recorded a video on my digital camera, unfortunately the lighting was not the greatest. Is there anyway to enhance the video to make it brighter?


Answer
There is hope.

First off, the great thing about digital is that it's easier to get a good image from a dark one than it is from one that's overblown. The reason being is this: the sensors on a digital camera only soak up so much light before they turn to white. If a pixel is recorded as white (blown out, zebra striped, etc.), there is absolutely no way of bringing it back down to a color.

When shooting film, the exact is opposite. A bit off topic but good to know.

So, unless what you shot is completely black, and even if it is, there's sure to be some data in those pixels, and data in pixels is a good thing! Having data in a pixel means it recorded the image. However, finding that image requires the proper software.

A basic editing program with decent image control is Final Cut Pro. I would assume Windows Movie Maker and most video editing programs would have the most elementary of controls as well. What you want to look for is:

1.) Levels - If you have the option of working with levels, you can bring the blacks / shadows up to a visible range, while leaving the midtones and highlights relatively untouched.

2.) Brightness / Exposure - If you have the option of working with brightness or exposure, you can boost the blacks / shadows up to a visible level, but keep in mind anything that looks good now will become overblown or white.

3.) Saturation - If you have the option of adjusting saturation, this may be a good step after adjusting the light levels of your image. Usually when you boost the 'brightness' of an image, it also becomes more washed out, which can be countered by boosting the saturation until you get a natural look.

4.) Noise Reduction - This adjustment would be the icing on the cake. When you boost those shadows, you'll quickly notice that they're very grainy. Noise reduction helps to lower than grainy look, but also tends to slightly blur an image. Worth a try at the very least.

In the future, there are a few things you can do to avoid a repeat. Look for these settings on your camera:

-F Stop - rare for low end cameras, but if you have control of the F stop, you can adjust the brightness and depth of field (area of picture that's blurred or clear) by increasing or decreasing the numbers. The smaller the number, the brighter the picture. Also, the smaller the number, the less depth of field you have. This is also known as aperture.

-ISO / film speed - Film speed or ISO is how quickly the sensor records the image. This affects the amount of light necessary to light a scene. A lower ISO (200) is slower to absorb light, but will give you less grain or noise in your video. A higher ISO (1600) will be easier to light with little light, but will also be much more grainy (noise).

Hope that helps!

Whats the best free video making software?




Billy


I'm looking for a free video software that I can use to make movies. Something that allows multy layers of audio, different effect, and if possible, multy screen options where I can have different clips play at the same time.
Any ideas?



Answer
The best free video editing software believe it or not is Windows Movie Maker.

Windows MovieMaker 2 is a capable little editor and ships free with virtually all new XP computers these days package.
http://www.microsoft.com/windowsxp/using/moviemaker/default.mspx

Virtual dub
A powerful freeware video editor with lots of features, including a choice of compression codecs, splitting, addition of audio tracks. Excellent.
http://www.virtualdub.org/

WAX
Wax is a high performance and flexible video compositing and special effects software. The idea for Wax is to be very general purpose and flexible in video compositing and effects, so that you can compose your dream video sequence with ease everytime.
http://www.debugmode.com/wax/

Zwei-Stein
Zwei-Stein 3.01 is a freeware non-linear, non-destructive video compositing and editing system which offers many advanced features unavailable elsewhere.
With Zwei-Stein you can edit up to 256 video, audio and still image clips, each with up to 64 effects chained serially. Cropping, panning and custom effects are easy with automatic key frames.
http://www.thugsatbay.com/tab/?q=zweistein

Avedit
It is a great tool to work with .AVI files. Regardless of small executable size, this avi editor offers you unlimited power of digital video processing. Some high-tech tricks included into AVIedit allows you to perform with ease and fun the many interesting things, like video warping, color restore, noise reduction and so on...
http://www.am-soft.ru/aviedit.html

Chopper XP
Chopper XP is a tool that lets you extract a part of any DVD easily. It is a Vob cutting program with a video display and a great interface. You just need to scroll to a location and select mark in and out points. The program also lets you set any priority of extraction and displays the estimated time left for extraction.
http://www.digital-miner.com/chopperxp.html

Virtual Edit
Virtual Edit is a semi-professional software video editing package aimed at ambitious content creators to video novices, who want to produce material with a slick and professional look, on a limited budget. Virtual Edit has been written by experts with experience in the Television and Broadcasting industries, which has been encapsulated in this simple software package.
http://www.virtualedit.net/home.htm




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