What is the difference between AVI & MP4 video formats?

The main difference comes not from these two formats itself, but from the types of codecs used within the files.
AVI (Audio Video Interleave) is a video wrapper format created by Microsoft, which stores video data encoded with various codecs. The two major ones are DivX and Xvid. The videos stored in AVI format retain their original quality. However, since there is no compression, the file size of an AVI video can be extremely large. You may do any AVI conversion task with Freemake.
MP4 is a multimedia standard specified as MPEG-4 Part 14. The main video codecs used in MP4 visuals are MPEG-4 and H.264. MP4 supports compression, subtitles, multiple data types, and streaming. Due to the efficient ratio between video quality and file size and streaming opportunities, MP4 is commonly used to distribute video via the Internet.

How to convert online MP4 videos to AVI?

Free conversion utility can transform both offline and online MP4 files. For example, you can also use Software for YouTube to encode online MP4 to AVI. You need to copy the clip link and add it into the program via the 'Paste URL' button. Then pick the desired multimedia container and follow the steps above to convert MP4 video from the Internet.

How to convert MP4 files over 1GB to AVI?

No problem with converting large files. Freemake video tool accepts video files of big size perfectly. You may add even 4K movies! For example, if you have a free Google Play film saved on your desktop, you can turn it into AVI and enjoy on a TV screen without any quality loss. Just follow the guidelines above. Don't forget to choose the 'Same as source' preset to keep the original video quality. The conversion speed will depend on your PC parameters.
If you need to limit the file size of the output video, use the weight sign to set the desired parameter and the software will automatically adjust the container specs.

How to convert MPEG-4 to AVI free?

You may add MPEG-4 files (with .mpg file extension) instead of MP4 ones. To turn them into AVI, choose the appropriate format button on the bar below, select a preset, and press the 'Convert' button. The proсess is pretty the same as described above.

May I edit MP4 videos before converting?

Sure. Our free MP4 to AVI converter lets remove unwanted parts, join several clips, replace audio part, and even rotate the whole movie CW & CCW. To launch the editor window, double-click the video file line. Don't forget to click 'OK' to save the changes and convert your MP4 movie afterwards.
In case your movie comes in a foreign language, use the converter app to add English subtitles to your media file. You’ll only need to manually find a corresponding text file on the Net. Use VLC player or any other video player to see whether the downloaded file perfectly matches your film.

How to convert MP4 to AVI for mobiles?

If you mobile device supports AVI video playback, you may convert MP4 files for it using Freemake software for Windows. Just follow the steps above. Drop the files and select the preset that matches your gadget (e.g., the popular ones are 720p or 480p). Please ensure that the audio codec for your output video file is MP3, since other codecs may not be accepted by mobile devices. Then press 'Convert' and upload the clip to your gadget when it is ready.