Tutorial about How to convert AVI to MP4 with H.264 codec?

What is AVI?
AVI, short for Audio Video Interleaved, is a multimedia container format introduced by Microsoft in November 1992.As a container, AVI can contain both audio and video data in a file that allows synchronous audio-with-video playback. With an age of 18 years, AVI is being widely supported on a vast range of operating systems and devices. AVI files are with a higher video quality but often bulge in size too. With codecs of DivX and Xvid, the picture quality of AVI may even better than DVD videos.

What is MP4?
MP4 is short for Moving Picture Expert Group-4. First published in 1998, MPEG-4 or MP4 was designed to encompass all the features that were part of earlier releases of MPEG files, and add a few more that would prove helpful with the advancing online technology of the day. As a standardized group of video and perceptual coding formats, MP in general quickly became a hit with the average Internet user. The introduction of MP4 made it possible for the audience to continue growing by providing quicker, faster, and higher quality broadcast media for the average user. MP4 is quite popular and more than 98% media players support this format!

Why to convert AVI to MP4 with H.264 codec with Leawo Video to FLV Converter?
To convert AVI to MP4 with H.264 codec is for putting the video on the web! MP4 with H.264 codec played with Adobe Flash Player is increasingly popular now and in the days to come. AVI videos with high quality are often with a bulged size too, which is not good for putting on the web. By converting AVI to MP4 codec,  or say convert AVI to H.264, you may put your AVI content in MP4 format to your website, blog, zone, etc. And, by converting AVI to MP4 with H.264 codec with Leawo free Video to MP4 Converter, you may get your video improved in both picture and sound. By converting AVI to MP4 with this video to MP4 converter, you may get your video trimmed. By converting AVI to MP4 with this free video to FLV converter, you may get your video cropped. By converting AVI to MP4 with this free video to FLV converter, you may save much more time than using other programs for its batch conversion. 

How to convert AVI to MP4 with H.264 codec with Leawo Video to FLV Converter?

Step1, Click "Add" or anywhere on the pane to input AVI files.

Step2, Click "Customize" to edit files. Double click the file name on the list to have a preview.

a. Drag the slides to adjust the effect.

b. Change the time points or drag the triangles on the slide to trim a video duration for the part you want only.
 

c. Choose from the "Letter Box" or adjust the values or simply drag the dot frame for a proper video dimension. This may help to remove the margins around the video to make it go with your screen aspect ratio.

Step3, Click the button to start the conversion.