What is MP4?

MPEG-4 Part 14 or MP4, 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 video and digital audio 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 only official filename extension for MPEG-4 Part 14 files is .mp4.

How to convert MP4 to HD using Video Converter

Encode HD Video (inc. AVCHD, TS, TOD, AVI HD, M2TS, etc.), AVI, MP4, WMV, Blu-ray, 3GP, DVD, VOB, MPEG, H.263/H.264 codecs, DVR-MS, MKV, FLV, etc. with AVS Video Converter or Mac Video Converter.

Free download Video Converter (Windows User | Mac User).

Step 1: Load or drag MP4 videos to Video Converter.

Step 2: Click image button at right of each video item, and choose HD as output format from Format list. You are also allowed to trim, crop, and add effect to MP4 videos before converting.

Step 3: Click "Convert Now!" to start to convert MP4 to HD.

When the process is over the following window will be opened.