Live Streaming Video using AVConv and the Raspberry Pi

The Raspberry Pi is a credit-card sized $35 computer that can be used to accomplish many tasks similar to what a desktop PC can do. This includes spreadsheets, word-processing, games, and even…live video broadcasting! By connecting a powered USB Hub and webcam to your Raspberry Pi, you can broadcast live video to an unlimited audience for free. I’ll show you how this is possible.

Please be patient and read through the entire tutorial before attempting.

What You NeedCredit: Wikipedia.org

Getting started requires a few peripherals. To start up your Raspberry Pi and do initial configuration, you will need an HDMI cable, USB keyboard, and USB mouse. In addition:

Recommendations

  • Use the raspberry pi “headless”. Do not run the desktop version of Rasbian on your Pi (xwindows). It uses an excess amount of RAM and precious CPU power that you need to reserve for your live video compression and streaming. Instead, use the command line interface or access via Secure Shell from another computer. (optional)

  • Assign a static local IP to the Raspberry Pi. (Configuration can be found in: /etc/network/interfaces). This is useful when accessing the Pi remotely. (optional)

  • Don’t use a Raspberry Pi enclosure that limits heat transfer and airflow.

Preparation

Update your software repository to the latest version by running the following commands:

sudo apt-get update
sudo apt-get upgrade

Plug in your devices.  Webcam –> Powered USB Hub –> Raspberry Pi

Install Screen (optional):

apt-get install screen

Restart your Pi device:

reboot


Installation

To transcode and broadcast the video, you will need to use a Linux application called AVConv (similar to FFmpeg). It is a command line program for transcoding multimedia files using the Libav Multimedia Framework. FFmpeg will give you the same result, but I personally prefer AVConv for ease-of-use.

To Install AVConv, run the following command:

sudo apt-get install avconv

Continue reading

What is WordPress?

WordPress (WP) is an excellent way for people who do not have the knowledge to setup their own websites or don’t really want to learn. Now a days you don’t even need to pay for a domain name or even web hosting. Combine all three and you have an awesome free website of your very own.

The main feature of WP is actually blogging. You have a lot of control and some of the features actually include adding authors and writers to your site so others may write blogs for you to either be pre-approved by you personally or post them immediately.

Once you have a domain name and a hosting site in place, you may want to install WP using the following steps.

The steps in creating a WP site are very simple, WordPress has setup a simple 5 minute installation guide found here.

  1. Download and unzip the WordPress package, if you haven’t already downdload here
  2. Create a database for WordPress on your web server, as well as MysSQL user who has all privileges for accessing and modifying it.
  3. Rename the wp-config-sample.php file to wp-config.php.
  4. Open wp-config.php in a text editor and fill in your database details as explained in editing wp-config.php to generate and use your secret key password.
  5. Place the WordPress files in the desired location on your web server:
  6. If you want to integrate WordPress into the root of your domain (e.g. http://example.com/), move or upload all contents of the unzipped WordPress directory (but excluding the directory itself) into the root directory of your web server.

If you want to have your WordPress installation in its own subdirectory on your web site (e.g.http://example.com/blog/), rename the directory wordpress to the name you’d like the subdirectory to have and move or upload it to your web server. For example if you want the WordPress installation in a subdirectory called “blog”, you should rename the directory called “wordpress” to “blog” and upload it to the root directory of your web server.

At this point you should now have a working WP site of your own and may log into wordpress to edit it’s contents. Another cool feature is the amount of WP themes that are available and many are free. Just search WP or WordPress themes in your favorite search engines and download which ever theme fits your blog the most.

To learn more about WordPress, visit WordPress.com and WordPress.org

Custom Shutdown Button – Based on Techit4692's video

How to customize your shutdown button to make it log off, restart, lock, or whatever you want it to do.

Right click taskbar > properties > ‘start menu’ tab >

‘Power button action:’ > Dropdown menu > choose the action

Apply > Okay

Now, when you click the power button in your start menu, it will follow this action.

Speed up your mac

Speed up your mac!

If you have a mac, you can probably notice a huge speed difference between macs and PCs. Although your Mac is already fast, why not make it faster, cleaner, and less cluttered. Here are some tips.

Helpful Apps

There are also applications you can install to help clean and speed up your system.

Here are a few reliable applications I use all the time.

Onyx: FREE A multifunction utility. It allows you to verify the Startup Disk and the structure of its System files, to run misc tasks of system maintenance, to configure the hidden parameters

Download here.

(Snow Leopard Only) $12 Squeeze is a background file compressor, which uses the new HFS-compression technology in Snow Leopard to transparently compress the folders you configure it to process.

Download here.  It’s worth $12

Pref. Pane FREE A database of hidden settings for Mac OS X

Download here.

Clean!

Just buy a can of compressed air, open up your mac, blow out the fan and any other dust. Make sure to follow instructions on the can! Any computer can always use a good cleaning.

RAM

If you don’t mind spending money the most important thing to upgrade would be the RAM, random access memory. This is the memory your computer uses when opening programs, temporarily saving things, and more. RAM is very important. You can usually upgrade a Mac’s RAM for anywhere from $25 – $800 depending on what you want to upgrade from and to. A good amount for an Intel Mac is probably 2GB. and a PowerPC Mac at 1GB.

Clean your hard drive.

Your computer’s hard drive (or storage) needs some space left over to run. So don’t fill your hard drive to the point where there is no space left.

You also probably have many applications, photos, media, and files you don’t need anymore. Simply send them to the trash.

Upgrade your software

Don’t forget to do a software update every once in a while. If your mac doesn’t do it automatically, click the Apple at the top left, then click software update and follow the wizard. Also, upgrading to the latest Snow Leopard can help out with speed and hard drive space. Only a $30 – $65 upgrade.

So that’s about everything. If you have any other cool tricks or tips, comment below or email me eric@techzany.com. I’m always happy to hear from you.


How to show labels on programs in windows 7 – from video!

Right click on taskbar
Click properties
Taskbar tab
To the right of Taskbar buttons click the dropdown menu
click never combine in the dropdown menu
click apply and ok
Now your done, you now have labels on your taskbar just like previous versions of Windows.