MP4 to AVI Guide
This is the guide about converting MP4 format to AVI. The guide gives you the easiest way to encode MP4 to AVI format with RER HD Movie Converter. RER HD Moive Converter is the best MP4 to AVI transcoder, Window 7/vista/XP supported and with all codecs built-in. Free download.
MP4 to AVI conversion guide with the Windows converter
Download and Input MP4 to MP4 to AVI decoder/encoder
To convert MP4 format to AVI, First download RER HD Movie Converter, no more codec needed, and run the transcoder program. Add one MP4 file into the best converting software to decode MP4 to AVI by clicking the upper Browse... button next to the Input File Name field. The best coding utility supports batch conversion by pressing + button or use drag-and-drop. For more about fast converting MP4 to AVI, follow the guide to the next step.
Choose AVI for converting MP4 into

Click To AVI button on the top of the MP4 to AVI encoder/decoder interface, through which you will encode MP4 to AVI file format in the easiest way. And click the lower Browse... to browse for the output folder.
AVI file format profile editing

Choose a preinstalled profile from the drop-down menu of the AVI profile list for the AVI video clips. The best MP4 to AVI transcoder software provides various preset profiles for the AVI to meet your needs. The profile showed on the picture above is strongly recommended. You can set more details by clicking Edit... button.
Transcode/recode AVI video clip from MP4 now

Click the Convert button and now the program will recode/transcode MP4 to AVI with the fast speed. The process bar will show you the whole process about how the converter software decode MP4 to AVI.
Best all-code-in MP4 to AVI Converting Program
Movie formats conversion
RER HD Movie Converter, also MP4 to AVI converter, can convert HD movie formats to popular SD movie formats such as MP4, 3GP, MOV,FLV, MPEG, 3G2, MPG, SWF, WMV, AVI , and extract audio tracks from different HD movie formats and SD movie formats.
Easy-to-use MP4 to AVI encoder
With simple and smart interface, Windows ALL supported, virus-free, the MP4 to AVI converter, RER HD Movie Converter can convert video formats easily and simply. Since all decoders and encoders are built in, all supported formats can be encoded without downloading any more codec.
High speed and High quality for MP4 to AVI
RER HD Movie Converter, MP4 to AVI converter, can convert all video formats to popular formats with high conversion speed and make best-quality output. All you need to do is to drag and drop your files into the software and you will enjoy the best-quality converted files in just few minutes.
Encode MP4 to AVI - Easiest Guides
RER HD Movie Converter, with all codecs in, is a powerful coding utility to code MP4 to AVI in the easiest way. Download the converter software and follow the guides to convert MP4 to other formats.
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MP4 and AVI
What is MP4
MPEG-4 Part 14, formally ISO/IEC 14496-14:2003, is a multimedia container format standard specified as a part of MPEG-4. It is most commonly used to store digital audio and digital video streams, especially those defined by MPEG, but can also be used to store other data such as subtitles and still images. Like most modern container formats, MPEG-4 Part 14 allows streaming over the Internet. A separate hint track is used to include streaming information in the file. The official filename extension for MPEG-4 Part 14 files is .mp4, thus the container format is often referred to simply as MP4.
What is AVI
AVI files do not contain pixel aspect ratio information. Microsoft confirms that many players, including Windows Media Player, render all AVI files with square pixels. Therefore, the frame appears stretched or squeezed horizontally when the file is played back. More modern container formats (such as QuickTime, Matroska, Ogg and MP4) offer more flexibility, however, projects based on the FFmpeg project, including ffdshow, MPlayer, xine, and VLC media player, have solved most problems with viewing AVI format video files.
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