If you have lots of MP4 files without subtitles and want to add SRT to MP4, you need a reliable tool for help (Windows 8 included).

http://www.wondershare.com/video-editor/how-to-edit-mp4-videos-files.html How to Edit MP4 Files? Using Wondershare MP4 editor for Mac/Win (Windows 8 supporte...

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This tutorial shows you how to download and convert flv to mp4 on Mac and Windows as easily and quickly as possible.

This tutorial is about how to convert mp4 video to other format and convert popular videos to mp4 format.

YouTube to MP4: This article teaches you how to convert and download YouTube videos to mp4 online. So you can play your favorite YouTube video with different players.