Category Archives: Computers

How to Convert Mkv to Avi

MKV and AVI are both video container formats that are used in the PC world; these “container” formats hold information, and in the case of these formats, the information that they hold is usually concerning audio and video. The MKV format was created by Matroska and any information needed about MKV can easily be found at the Matroska website. MKV is an open standard, meaning that it is freely available for everyone to implement support for the format if they desire, however it was not until more recent years that MKV got recognition.

AVI is the more popular of the two formats even though it does not have as many features as MKV and because the MKV format is not as popular, there may be instances where conversion from MKV to AVI for various purposes may be needed. AVI files are popular for tasks such as video editing or burning to DVD which is difficult to do with MKV files as the support is limited or non-existent in the more popular burning programs such as Adobe or Cyberlink; fortunately there are utilities available that can be used to convert MKV to AVI.

Things You Will Need

PC or laptop

Internet connection

Conversion software


Using your PC or laptop go online and search for a free tool that can convert MKV to AVI; popular choices include Format Factory, Media Coder and VirtualDubMod.

Once downloaded, install the burning program that you intend to use and run it.

Locate the MKV file that you would like to convert to AVI and drag it into the program.

Depending on the program used you may be prompted for a conversion option; if you are prompted select AVI. If you are not prompted and are using software such as VirtualDubMod then click on FILE then SAVE AS; in the window that opens, specify at the bottom AVI as the output container.

Hit the button to save the file or start the encoding or conversion process in the program that you are using.

Once completed your MKV should be converted to AVI.

Do’s and Dont’s

MKV files are capable of retaining the structure of the original movie disc that they were created from – If you want to burn your MKV to DVD but your burning application does not support it do not convert to AVI, instead you should find another application that will burn the MKV directly to DVD while preserving the structure of the file.

Though there are many free programs available to work with MKV files there are also some applications that may require you to purchase them in order to unlock certain features; ensure that you have exhausted all the free options before paying for additional software.

The Matroska website has tools and links to additional tools for working with MKV files; tools for creating MKV files from existing files or extracting the audio, video, subtitle or chapter information out of an MKV file is freely available for download.

How to Convert Mp3 to Wav

The WAV format is a lossless audio format, which means that audio copied in this format is an exact duplicate of the original and maintains the same quality as the original file; WAVE or WAV stands for Waveform Audio File Format and was a joint-project by Microsoft and IBM. The WAV format was the primary format used on the Windows operating system for storing audio files that were copied from audio CDs; however in more recent times the WAV format has been superseded by the WMA format on Windows operating systems.

The MP3 format is a lossy audio format which means that unlike the WAV format, the original file does lose some of its quality when converted; however currently the MP3 format is the most popular audio format worldwide because the human ear is not able to identify the loss in quality. The MP3 format was designed by the Moving Picture Experts Group (MPEG) and was intended to work alongside the MPEG video standards.

Even though MP3 is the preferred audio file format for everyday use, the WAV file format is stilled used for some applications; audio or video editing applications may work better with the WAV file format as opposed to other audio formats and WAV can be considered as the PC equivalent to the audio CD format. Whatever the reasons may be converting an MP3 to WAV is no more difficult than the reverse, and once completed you may use the WAV file for whatever reasons you may have.

Things You Will Need

PC or laptop

MP3 files

Adequate hard drive space

Conversion software

Internet connection (optional)


Locate the MP3 files you would like to convert to WAV.

Preferably copy all the MP3 files to a single folder for ease of management.

If you have no conversion software you may either download a free application such as Format Factory or purchase one such as NCH Switch.

Once downloaded install the application and run it.

Locate the option to convert to WAV from the application interface if applicable.

Drag all of the desired MP3 files into the application or the folder if the program supports it.

Hit the button to start the conversion and wait for the process to complete.

Once completed either locate the destination folder or open the output folder from within the application and your converted WAV files should be there.

Do’s and Dont’s

Do not purchase conversion software unless you find it absolutely necessary to do so, or if you have tested and found that a paid application works faster than an available free one.

Don’t set the bitrates for MP3 files too high or too low when converting them as setting it too high increases the size of the file without noticeable improvement in the quality; conversely, setting the bitrates too low will adversely affect the quality.

Bear in mind that if the quality of the MP3 file you are converting was poor to begin with, converting it to the WAV format will not improve the quality.

How to Convert Wav to Mp3

MP3 is the most popular audio format in use today and there are many different portable devices that support this format; due to the immense popularity of the format and the much smaller size of MP3s compared to WAV files, some audio CD players are designed to handle discs that may have MP3 files and people can copy their music collections to MP3 for travel purposes. If you have already downloaded some software to rip your audio CD but have found that you only have WAV files, or if you have some WAV files on your PC that you would like to convert to MP3 here are some steps to help you with the process.

Things You Will Need

• PC or laptop
• Audio CD or WAV files
• Conversion software
• Internet Connection (optional)
• MP3 player

Instructions with Bundled Software

1. Start your PC or laptop and locate the WAV files that you would like to convert.
2. Start your bundled software. Your MP3 player will most likely have bundled software such as iTunes for the iPod player.
3. Drag the WAV files into the library section of your bundled software or into the conversion drop-box and hit the option to commence the conversion.
4. On completion your bundled software may prompt if you would like to synchronize your newly created MP3 files. Follow the instructions of the prompt to have your MP3 files copied to your device or burned to an MP3 disc.

Instructions without Bundled Software

1. Using your internet connection download free conversion software such as Format Factory or purchase a conversion application such as NCH Switch Audio Converter and install on your PC or laptop.
2. Once installed select the option to convert to MP3 if applicable and then drag the WAV files into the window.
3. Once you have dragged all the WAV files you would like to convert into the program hit the button to start the conversion process.
4. On completion locate the destination folder of the converted files. This may be done by a button in your program that will open the output folder or may be done manually depending on the program used.
5. Copy the MP3 files to your device after attaching to your PC or laptop via the data cable or burn to a CD using your preferred disc burning application.

Do’s and Dont’s

If using a program to rip audio from your CD to WAV before converting to MP3, ensure that on completion of the process you remove the WAV files from your PC or laptop as the size of a single WAV file may exceed the size of all the converted MP3 files.

Most modern ripping applications such as Audio Grabber have the facility to rip directly to MP3 or automatically remove the created WAV files on completion. Either opt to go directly to MP3 in the interest of saving your hard drive space or ensure that the option to remove the WAV files on completion is checked.

How to Deal with Data Error Cyclic Redundancy Checks

This happens when there is a problem in the mathematical process being completed by the computer. Your PC will check if the data being transferred is corrupted or damaged.

You will most likely encounter this error when you are trying to read or copy data from a CD or a DVD that has been damaged. Even before you see the message appearing on your screen, you can hear a whirring noise coming from your CD drive. It will sound like something is grinding against your CD or your CD is whirling so fast that your computer cannot seem to keep up. This is because your drive is attempting to read the contents of the CD more frequently than usual. If it fails to read for a number of times, you will get the Data Error Cyclic Redundancy Check message on your screen.

This can also happen when you are trying to access a corrupted file from the Internet. Perhaps you did not download the file properly or it may have a lot of bugs attached to it.

How can this error be resolved?

This error message can be prevented through several steps. When you see this error while trying to read a CD or a DVD, the first thing that you have to do is to eject and clean the disk. You may also want to take a look at your disk drive for loose cable connections or a faulty reader. If you are trying to read data that you downloaded, trace the download process and find out if you were able to download it properly. If not, then you can just download it again. You can also try different download managers. This will help you keep the consistency of the file and avoid having to deal with the same problem after you troubleshoot it.

If it persists, you may need to reinstall your device driver. A faulty device driver will not function the way it should once it gets tampered with. This means that you might have a clean CD but your CD drive refuses to read it.

How To Screen Print

Who would have thought that you could custom design a t-shirt in the comfort of your own home. Well you sure can. The process is called screen printing and though the term may sound complicated it is really simple. Below you will find a step by step guide, follow the instructions and you should be fine.

Required Material

  • T – Shirt
  • Gauzy or Transparent Curtain
  • Screen Printing Ink or Fabric Ink
  • Mod Podge
  • Blank Paper
  • Watercolor Paints

Required Tools

  • Stencil
  • Paint Brush
  • Sponge Brush
  • Embroidery Hoops


  1. Find or design a unique image that you would like to screen print.
  2. Stretch the gauzy curtain tightly in between two embroidery hoops to create your screen.
  3. Adjust until material becomes as firm as the top of a drum.
  4. Trim the extra material.
  5. Tape down your design onto a flat surface.
  6. Center the screen over it.
  7. Carefully trace your design onto the screen.
  8. Use the mod podge to cover the areas you do not want printed.
  9. Allow to dry.
  10. Test your screen on a blank paper by brushing over it with watercolor paint.
  11. Correct all mistakes by reapplying mod podge.
  12. Stretch your t-shirt over a flat surface.
  13. Place a piece of cardboard between the front and the back.
  14. Place t he screen where you want to print your design.
  15. Blot ink all over your image using your sponge brush.
  16. Allow to dry overnight.


  • Start out with simple designs as this will use less ink.
  • A Plain T-shirt will show your design better
  • For females try using a fitted tank top to make your design fit better.
  • Keep your screen for future uses.

How to Convert Mp4 to Dvd

If you would like to convert an MP4 to DVD you will need to obtain a program that is capable of authoring and converting your MP4 file(s). There are many programs available online, some are freeware others will require you to purchase the software. The MP4 format is commonly used in Playstation Portable (PSP), iPod, iPhone and iTunes. It is used to store both audio and video data and may not be compatible with most standalone CD or DVD players. For this example the program DVD creator will be used.

Required Tools and Materials

Aimersoft DVD Creator
MP4 File(s)


1. Download Aimersoft DVD Creator. Install it using the setup guide that comes with the download.
2. Open DVD creator. Once on the interface click on Load Video. This will allow you to browse the selection of MP4 video files currently on your hard drive. Add the file or files you would like to convert to DVD. You may play the MP4 to ensure that you have chosen the correct file.
3. Drag and drop your MP4 file into the storyboard to prepare it for conversion.
4. You may at this point Convert your file and burn it simultaneously to DVD by clicking the Burn option. However customizing your DVD is recommended.
5. To customize your MP4 file you may choose to use the slideshow option. By using this you will segment your MP4 files into different subsets with titles that may be selected individually in a standalone DVD player. Click on the Add Slideshow option. This will generate a new slide, drag and drop the MP4 video into this slide. You may add a few more slides to create a DVD with more than one title. This is best used with videos that are not very large. For example if the video represents an episode of a program it will be beneficial to separate it into its own title. This will not be well suited for entire movies. You may use Remove Slideshow to remove those slides you do not want or Play Slideshow to preview what you have created.
6. You may then edit the MP4 video by selecting on the Edit option. This will allow you to crop the size of the video, trim the total length and make alterations to the effects.
7. You may use the Transition option to create smooth transitions from one video to the next. Once you have chosen the transition you want. Drag and drop it between the videos of your choice.
8. You may then customize the DVD menu by selecting the Menu option. You may use the templates that are provided to create frames and buttons. To choose any of the options you like double click on it and it will automatically be shown on the DVD’s menu. You may also add background music, text and an image from your computer to complete the customization of your menu.
9. Select the Preview option to ensure that your videos are exactly as you would like them to be. You may go back if you are not satisfied with the results.
10. You may then click the Burn option. This will allow you to either Burn your newly created DVD to a folder, a DVD disk, or a DVD ISO image. If you would simply like to convert the MP4 to a DVD playable format select the ISO image option which you may burn to disc at a later time.
11. Once you have made your choice click Start and your project will be created. This may take some time.

Tips and Warnings

You have the option to choose low or high video quality. Higher quality DVDs will require more space on the hard drive during and after the conversion process.

How to Convert Avi to Dvd

If you have a standard DVD player and need to convert AVI files (a format used mostly on computers) to a DVD playable format then you will have to use specialized software to perform the conversion. There are several to choose from, some are freeware, others you will have to purchase. These programs will create a video file that will actually be larger than your standard avi file. As a result, you will need to have at least 4 GB of free hard drive space to complete one conversion. On average AVI files will hold up to 900 GB per full length movie. Once this movie is converted to DVD format it will be as large as 4.2 GB. The program that you will use should be able to convert and author the AVI file. For this example DVD creator will be used. It is capable of converting AVI, MPEG and WMV to DVD format.

Required Materials and Tools

An AVI File
DVD Creator


1. Retrieve your AVI files by clicking the add button or you may drag and drop the files you want into the required field of the interface. You may preview the video to ensure it is the correct file and to avoid converting a faulty AVI. Additionally, you may take snapshots of different segments to use later in authoring the DVD. You may also change the position of the videos if you are using multiple AVIs by selecting move up or move down.
2. Choose a DVD template to be used on your new DVD. Click on the “Menu” button to customize the music that will be used on your video.
3. You can then make changes to the Menu by replacing the background picture with something to suit your personal taste. Additionally you may choose any template that you like. There are templates that feature sports, holidays, occasions and events. The newer version will also feature more templates.
4. To edit the actual AVI select the Customization option. This will allow you to crop, add effects put on a logo and add text to your video. Once you have put on the entire required customizations click OK to return to the main interface.
5. To begin the actual conversion process you can either burn the new format to a DVD instantly or create a DVD ISO image that you may later use. You should click the start button which brings up either of the two options mentioned. You may change the Volume Label so that your file will be clearly marked for better overall organization.
6. Once you have made your choice click OK. The program will start creating your DVD/DVD ISO image. This may take a great deal of time depending on the size of your AVI(s).
7. After it has completed the process you may check to see that the ISO image has been created or the DVD has been burned to CD.

Tips and Warning

Allow the program to burn your DVD without any interruptions. This means you should not run too many other programs especially if you are using a slow computer.

How to Convert Mp3 to Aac

If you would like to convert files from MP3 to AAC there are programs you may purchase to do this. Fortunately, if you are already a user of iTunes, you may use it to convert your MP3 files to AAC. AAC is a lossy compression audio codec that produces slightly better sound quality than MP3. While MP3 is used universally, AAC is slowly becoming a preferred codec that may be used in most computer based players. If your desire to convert to this format is grounded in a need for improved quality then you should not be disappointed. Additionally, AAC will use less space than a typical MP3. This means if you convert several files to AAC you will then notice a significant reduction in the space required to store audio files. Once you have converted the MP3 files to AAC with iTunes they will be playable in any compatible device.

Required Tools and Materials

MP3 Files


1. Launch the iTunes application. Once open go to Edit, select Preferences and then select the General tab. At this point you will need to click the Import Settings. Essentially you will be choosing the type of conversion that you will like to perform.
2. At the Import drop down menu select AAC encoder from the list of options. Customize your file by selecting the Custom option. It is best that you choose the exact bit rate that is used on your MP3 files. Choosing a higher or lower bit rate may affect the overall quality. Your ultimate aim is to produce an AAC file that is comparable to, if not better than your existing MP3 file.
3. Click on OK and exit the preferences menu.
4. Now you are ready to select the file or files that will be converted. Go to your iTunes Library window and select all the tracks you would like to convert. You may select the complete list of tracks by using Apple +A or Ctrl +A found on your Keyboard. You may also use the iTunes Kind column to sort your existing list. This will automatically produce a list of only MP3 files. It is best to convert all at once if you are interested in using the AAC format more frequently.
5. After you have selected all the files, simply right click on one of the files to choose the Create AAC version. You may also choose this option from the Advance tab. Depending on the number of files you have chosen the conversion process may take a while.
6. After the conversion process is done you should have both AAC files and MP3 files on your hard drive. If you wish to delete your MP3 files consider making backup copies of them. While AAC will give you better sound quality and use storage space more effectively, remember it will not be playable in most external devices.

Tips and Warnings

Be sure to play back all your newly created AAC files to make certain that they were converted correctly.

How to Convert Flac to Mp3

FLAC is an audio codec that stores information using lossless technology. This means that the sound quality is not lost during conversion from another file format to FLAC. MP3 format while not as impressive in terms of audio quality is compatible with most players. The difference in sound is not something that is easily detected, therefore, converting from FLAC to MP3 will not have any real impact on the overall listening experience. To convert from FLAC to MP3 you will need software created specifically to do this. Most programs will be able to perform several different types of conversions. For this example AudioConverter Studio will be used.

Required Tools and Materials

FLAC files
Audio Converter Studio


1.Go to the website that offers the software. Download Audio Converter Studio setup package and store in a location that is easily accessed. Once you have downloaded it, install it based on the instructions given.
2.Launch the program. Instantly the Wizard will open and show you a number of options. Select “Convert single file or group of files from one format into other”, which may already be highlighted. Once selected, click Next. If you do not see the Wizard automatically pop up press Ctrl W to open it or choose it from the File menu option.
3.Choose the FLAC files you would like to convert to MP3. Do this by entering the Open dialog which should be visible after you have clicked Next. Browse the selection and choose files using the arrow keys or the mouse.
4.Once your list of files is chosen, select Next.
5.You will now need to select an appropriate filename and a folder in which to place the newly created MP3 files. You may use meta data to automatically retrieve the names of files that are not currently named on your list. It will find this information and label each file accordingly with artiste name, song title and album name. If your files are named correctly simply click next.
6.You can then determine the quality of the resultant MP3 files. If you would like files that are compact then you will need to choose a smaller bit rate. It is highly recommended that you do not go below 128 Kbit/s as this will produce poor sound quality. On average 128 Kbit/s may be used comfortably. If you are not willing to compromise the overall sound quality then use 320Kbit/s which will give you the best sounding MP3 possible, however the file will be considerably larger.
7.Select Next and then check all your settings to ensure everything is in order. Select finish to start converting your files. The time taken will vary depending on the number of files selected and the overall speed of your CPU. You do not need to do anything else once you have selected finish, simply wait until the process is complete to see the end results.

Tips and Warnings

Check the files once they have finally been converted. Ensure that they are playable in a standalone player.

Do not turn off the computer while the program is still converting files. This will result in incomplete or faulty conversions.

How to Convert Rm to Mp3

Real Media or RM is a container format that holds audio and video data. This format is typically used to stream videos and music online because of its compact size and relatively good sound and video quality. Unfortunately, the RM format is not compatible with most external devices including car radios and CD players. This means that if you would like to listen to your RM audio files without the use of your computer or a Real Media player, you will need to convert it to a more convenient format. The best option is the MP3 format which is compatible with most standalone players. MP3 files will be larger but will still maintain audio integrity. There are a variety of converters to choose from, many of these can be downloaded online for a small fee or completely free of charge. If you prefer not to pay for a converter then Free RM to MP3 Converter is a perfectly good option. This program will not work on Mac O/S and is made specifically for the Windows operating system.

Required Tools and Materials

Windows O/S
Free RM to MP3 converter
RM file


1. First go to the website that offers the free distribution. Once there, download the setup package. The program is small and will not require much disk space.
2. Open the downloaded file and follow the instructions for setup and install the program. If you have any problems installing the program delete the current setup package and download the converter once more from the website and attempt installation a second time.
3. After you have successfully installed the program launch it.
4. The interface should now be in clear view. Load your RM files by selecting the Add Files option. You will need to browse your computer’s file system to locate the files. To make this process move more quickly always place your audio files in a folder that is labelled music. For even better organization label a specific subfolder RM and place all RM files here. If your files are not in one location this may take a little longer than normally expected. It is simply easier to locate and sort your RM files before opening the converter.
5. Once you have chosen all the RM files to convert you may now change the settings. If you do not wish to change the settings you can ignore this option.
6. To begin converting the files select the Start option.

Tips and Warning

When converting to MP3 you may adjust the bit rate. It is best that you use a lower bit rate if you are concerned about the file size, but not much lower than 128Kbit/s. Most MP3s are set to 128 Kbit/s because the audio quality is satisfactory at this level; however for the more discerning ear 320Kbit/s may be preferable.

Do not power down your PC during the conversion process this will result in incomplete conversions.

After your files have been converted listen to them to ensure that they are free of faults and are of an acceptable quality.