DivX Plus HD files consist of high definition H.264/MPEG-4 AVC video with surround sound Advanced Audio Coding (AAC) audio, wrapped up in the open-standard Matroska container, identified by the .mkv file extension.
DivX Plus HD files leverage and extend on Matroska's ability to support multiple language tracks, subtitles, chapters, and additional bonus content.
Because the grouping is a specific subset of what is in the standards, there are certification processes for each of the profiles that device manufacturers must follow.
[12] The format supports quick start where the user can begin viewing even large HD files immediately.
[20] At minimum, the following command line creates an H.264 bitstream within the DivX Plus HD profile: Despite the popular transcoding tool HandBrake dropping .avi container support, it can still be used to create DivX Plus compatible videos if MKV is selected for format, x264 is selected for video codec, AAC is used for audio codec, and the following options are passed into the advanced settings:[21]