My MP4Box GUI is a Graphical User Interface for the well-known command line tool MP4Box. My MP4Box GUI, like MP4Box, is freeware. Meaning that it is complete and functional software that does not require payment or other compensation (such as nags or advertising) for its use.

MP4Box is an MP4 muxer. It can import MPEG-4 video (H.264 or ASP, encoded for example with x264, DivX, Xvid, 3ivx or FFmpeg) and audio streams into the MP4 container. The end result is ISO compliant MP4 streams. It can also produce MPEG-4 Timed Text streams by importing subtitles formats such as srt. It can also split MP4 files into sections, which can be useful when transferring files to portable media players. MP4Box is part of the GPAC Project framework. It provides only a command line interface, and, for legal reasons, the author only distributes its source code.

My MP4Box GUI makes using MP4Box much easier. Instead of having to type out all the commands that you want MP4Box to do, My MP4Box GUI does all this for you. So you only have to click a few buttons to get the job done; not type a paragraph, to get the job done.

Features:

• Create mp4 files containing
  • video streams with m4v, cmp, h264, 264, h263, 263 as input format or from avi, mpg, mpeg, vob, mp4, mov, ogg, qcp and 3gp format.
  • audio streams with aac, ac3, amr, awb, evc, mp3 as input format or from avi, mpg, mpeg, vob (mp2 only), mp4 and 3gp format.
  • subtitle streams with srt, idx/sub and ttxt format.
• Add as many audio tracks as you wish to an mp4 file.
• Delay every audio and/or video track separately.
• Change the framerate of added video.
• Save a list of jobs to be completed at a later date.

Requires: Microsoft .NET Framework 3.5.

What´s new in this version 0.5.5.4:

• added multi-file select support when joining *requested* (note) When joining files with embeded subtitles the resulting file will have extra time added to it. This is a bug inside of mp4box.exe, I have no plans at this time to fix it.