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.


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.



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.



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.



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.



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.


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 

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:

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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