Downloading youtube videos to AVI files and convert AVI to MP4/MKV/MOV/WMV/FLV or MP3 with iFun AVI Video Converter and Fix Common Problems of Converting AVI video files

What is AVI?

Introduced by Microsoft in 1992 and known as Audio Video Interleaved, AVI has been one of the 

most common multimedia container formats widely used for storing TV, movie and other image 

content and information. AVI format can contain multiple streaming audios and videos into one 

container, and it also allows synch-playback of audios and videos. Compared to other video 

formats, AVI can ensure a lossless compression codec and offer relatively high-definition videos. 


If you want to watch AVI videos on Apple, Android portable devices or TV, you can convert those 

AVI files to other supported formats by using iFun Video Converter. This free AVI converter not only 

allows you to convert AVI videos between other video formats,but also download YouTube videos 

to AVI format.


How to download YouTube videos to AVI format videos in different resolutions 

(HD/Full HD/Normal and more)? Launch iFun Video Converter, choose "Download" module and 

you'll see URL address bar down there, copy the URL of video from YouTube and paste it in the 

address bar. Click "save as" option, select AVI as output format, and choose whatever resolution 

you want, and click "OK" to save it and “Download” button to download YouTube videos to AVI format.

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AVI vs MP4

Like DVD video format, AVI format has high compatibility and good image quality. However, it usually 

comes with large file size. If you expect proper file size as well as excellent video quality, we suggest 

you to convert AVI to MP4, the format is supported by almost all players and devices.


How to convert AVI files to MP4 format with original quality with iFun Video 

Converter? Open iFun Video Converter, click “Add Files” button or drag your AVI files into iFun Video 

Converter directly, select MP4 as the output format. If you want the video file to keep original quality, 

then remain resolution, frame rate and bit rate parameters as “Auto”, and start convert AVI to MP4.

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AVI vs MKV

Compared to AVI, MKV is considered as a relatively new format that supports multiple audio and video 

files. In terms of definition, there is no big difference between AVI and MKV,since both of them use the 

same compression format.How to convert AVI to MKV? Use iFun Video Converter as AVI to MKV 

converter, you enable to convert AVI files to MKV format easily and quickly.

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AVI vs MOV

Developed by Apple, MOV is the video format for QuickTime Player. Convert AVI to MOV can reduce 

video file size and play them on QuickTime Player smoothly. By taking advantages of iFun Video 

Converter AVI to MOV converter, it’s easy and safe to convert AVI to MOV.

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AVI vs WMV

WMV is a newer format introduced by Microsoft. WMV format comes with high compression rate as 

well as small file size. Generally, Windows Media Player does not support AVI format. To play AVI video 

files on Windows Media Player, you can convert AVI to WMV via iFun Video Converter.

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AVI vs FLV

FLV format usually ensures small file size and it is fast to download and upload to video-sharing websites, 

while AVI format can offer high definition. Convert AVI to FLV can help you save much storage & space. 

Besides, it will be much easier for you to upload the video files and share with others. iFun Video Converter 

allows you to convert AVI to FLV with only few simple clicks.

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iFun Video Converter supports a wide range of other video and audio formats, such as 3GP, MPG, 

M4V, VOB, MP3, AAC, WAV, WMA and more. So you can use this video converter tool tocomplete 

video & audio conversion like AVI to MPG, AVI to VOB, AVI to MP3, AVI to WMA and etc. rapidly and 

simply. 

Also AVI is a video and audio file format used to save audio/video information and playback, which is 

supported on mainstream media players.


But there are also some practical disadvantages.

1,Some movies use separate compression for audio and video. If the setting goes wrong when match 

the files, picture and audio will be out of sync. Format Package and iFun Video Converter is the most 

convenient software to fix synchronization issues in AVI video files during conversion.

2,There will be a noticeable quality loss if AVI files are compressed beyond certain limits.

3,Uncompressed AVI files will result in very large size as compared to the other file formats.If you want 

to know quality difference among formats and video encoding ways,

please check this article:

http://www.ifunsoft.com/blog/a-guide-to-common-video-formats-and-video-encoding-31.html


Many people are told that format conversion can reduce the file size. But how? 

There are three factors that determine the file size: format, resolution and bit rate.  


AVI is the largest format. It’s 10 times the size of WMV and 15 times the size of MPEG. The smallest 

format is FLV. According to the internet, the rank list is AIV, WMV, MPEG-2, VOB, MP4, MOV, MPEG, 

RMVB, RM and FLV. Higher resolution and bit rate will also result in bigger size. 

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