If you want to be able to save a lot of videos in your hard drive and keep good quality on each and every one of those files then you will need to use some video transcoding tricks which include the use of codecs and audio compression as well. In order to optimize the file size of your videos we will have to separate the two streams found in such files, let’s start by analyzing the video stream. When it comes to video compression the best containers to use are: AVI, WMV and MKV.