G33K-TRICKS - Your source to Tips and Tricks : Others
Showing posts with label Others. Show all posts
Showing posts with label Others. Show all posts

Friday, June 24, 2016

Audio Testing Links

Test your Headphone's or Speaker Sound Quality

Found a  nice Audio testing Website which I wanted to share with you all.

There are plenty of Audio test files which you can directly run over your browser and then you can put your Headphones or Speaker to test.

For Audio tests on your headphones 

List of other Sound / Audio tests

Saturday, April 16, 2016

How to change the resolution of videos or images

Changing the video resolution can also be termed as Scaling the Video / Resizing the Video.
How to change the video resolution
One of the easiest way for manipulating the videos is to use FFMPEG tool.
FFMPEG is a free software that can produce libraries and programs for handling multimedia input. It can decode, encode, transcode, mux, demux, stream, filter and play pretty much anything that humans and machines have created.

You can download ffmpeg tool from here based on your OS

FFMPEG uses the libswscale library to scale the input video.
[The scale filter forces the output display aspect ratio to be the same of the input, by changing the output sample aspect ratio.
If the input image format is different from the format requested by the next filter, the scale filter will convert the input to the requested format.]

For all the options available with FFMPEG scaling you can see


ffmpeg -i input_file.avi -vf scale=320:240 output_file.avi

With the above command the aspect ratio will also change. If you want to keep the aspect ratio same after changing the video resolution you have to specify only one component, either width or height. And have to set the other component to -1.

ffmpeg -i input_file.jpg -vf scale=320:-1 output_file_320.png

The above commands will work with Image files as well.
You can change the image resolution using the ffmpeg tool.

You may also like visit few other pages:

Sunday, March 27, 2016

Tips on Go Green and Save Energy

  • Avoid the car: When taking a short trip, choose to walk, cycle or use public transport. This reduce carbon emissions and is also good for you
  • Check you tyres: Fully inflated tyres can reduce a car's fuel emissions by up to 5%
  • Drive slower - and smoother: Staying within the speed limit and smoothly accelerating can save up to 25% of a vehicle's fuel use
  • Use energy-saving light bulbs: These compact fluorescent lights (CFLs) use up to 75% less energy and last 10 times longer
  • Switch off when you leave: Lighting an empty office wastes enough energy to boil water for 1,000 cups of coffee and doubles a company's annual electric bill
  • Recharge you batteries: If not disposed of carefully, batteries can be harmful to the environment due to the acids and metals used in their manufacture. Rechargeable batteries are safer, last longer and therefore cheaper
  • Go solar: It may seem expensive, but the government and many states offer programs and rebates to offset the costs
  • Turn out the Sun light: Switching off one bulb for one hour saves up to 22,000 watts per year
  • Keep your cool: It takes a refrigerator three minutes and a freezer 30 minutes of high-energy use to cool down after being opened for just one minute
  • Unplug your charger: 95% of the energy used by a phone charger is wasted by being left plugged in
  • Make fast food: (Not the Fast-Food)Cooking quicker uses less energy - switch from the grill to the toaster, from the oven to the microwave
  • Consume responsibly: Avoid buying products that are excessively packaged
  • Print double-sided: Using both sides of the paper is highly effective and easy. It reduces your paper consumption by up to 50%
  • Plant a tree: Trees make a big difference by continually removing carbon from the atmosphere. It is a worth while long-term in initiative
  • Reduce paper consumption: Think before you print. On average, each worker uses 50 sheets a day. Recycle and reuse, or don't print
  • Take shorter showers: Making your shower one or two minutes shorter saves up to 2650 liters a month
  • Stop dripping: 10 drops a minutes wastes up to 6 liters of water everyday
  • Turn off the tap: Doing this when brushing teeth or shaving saves water, because a running faucet wastes 10 liters of water a minute
  • Bring out the clothesline: Take advantage of nature - a clothesline takes longer than a dryer but uses no energy, produces no emissions and is free! With each load, an electric dryer generates more than six pounds of greenhouse gases
  • Shop fresh: Fresh produce requires less packaging and can help improve your diet and overall health
  • Pay bills online: Easy and saves postage stamps too

You may Like to see my other post: Energy Savings Tricks

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