Aiseesoft QuickTime Video Converter is the best software which enable you to convert all popular video(MPG MPEG MPEG 2 VOB DAT MP4 M4V TS RM RMVB WMV ASF MKV AVI 3GP 3G2 FLV SWF MPV MOD TOD QT MOV DV DIF MJPG MJPEG HD video) and audio(MP3 MP2 RM AAC AC3 WAV WMA M4A RAM OGG AU AIF AIFF APE FLAC NUT) files to QuickTime supported formats with super fast conversion speed and lossless sound quality. Moreover it can support iPad 2 and iOS 4.3 now after upgraded.Key Functions1. More reliable video or audio to audio conversion Aiseesoft QuickTime Video Converter guarantees the reliability to convert audio or take out audio from video to QuickTime AAC AIFF MP3 M4A WAV etc audio formats.2. One time different conversion Aiseesoft QuickTime Video Converter can convert one file to different formats at the same time based on your need.3. Video Cropping Aiseesoft QuickTime Video Converter software allows you to remove black edge of your movie and get any playing area of the video by using its Crop function. You can also select the Zoom mode to extrude your video slightly to adjust to your portable devices so you can get the best video quality.4. Merge into one The QuickTime Video Converter software provides an easy way to combine and join multiple videos together. Just select the videos you want to join and check the merge into one file check box you can finish it easily.5. Add watermark for your video Want to make your video more typical Using the watermark function to assist you to add Text or Image watermark on your video.6. Select audio track and subtitle For more comfortable video enjoyment you can select you need audio track and subtitle.