WinRAR is a powerful archive manager. It can backup your data and reduce size of email attachments, decompress RAR, ZIP and other files downloaded from Internet and create new archives in RAR and ZIP file format. You can download the trial version of the software at www.rarlab.com
To compress large file using Winrar follow simple steps given below:
Step 1: Select and Right click on the file you want to Compress and select Add to Archive option.
Step 2: A window will pop up with various options. In Archive name field type the name of your archive manually in the text box provided below.
Step 3: When creating a new archive, you first need to select the archive format. ZIP is preferable when you are not sure that a receiver of your archive has WinRAR. Otherwise just select RAR, since it provides more options and higher compression.
Step 4: There are six compression methods supported: "Store", "Fastest", "Fast", " Normal", "Good" and "Best". The Best method provides high, but slow compression. Fastest method compresses poorly, but it is very fast. Store method just merges files into an archive without any compression. If you want to create an archive for distribution or for long storage, It would be best to probably ignore the time constraint and choose the Best compression method to reduce the size as much as possible. But for daily backups choose Normal compression method.
In the example below, I have chosen 98078 KB which comes to around 95.77 MB.
Step 6: When you have chosen the right options for your archive, click the OK button.
(In my example below, the video file I had chosen was compressed into three parts comprising of 95.7 MB each)
You can also watch this same procedure on YouTube. I have created the video just to make it easier for everyone to learn.