HD

Every day thousands of users submit information to us about which programs they use to open specific types of files.While we do not yet have a description of the HD file format and what it is normally used for, we do know which programs are known to open these files. See the list of programs recommended by our users below.We are constantly working on adding more file type descriptions to the site - the current count exceeds thousand by far, and more information about HD files will hopefully be added soon.

- - File.org

MKV

The Matroska Multimedia Container is an open standard, free container format, a file format that can hold an unlimited number of video, audio, picture, or subtitle tracks in one file.It is a universal format for storing common multimedia content, like movies or TV shows. Matroska file extensions are .MKV for video (which may or may not include subtitles and/or audio), .MK3D for stereoscopic video, .MKA for audio-only files, and .MKS for subtitles only.

- - Wikimedia

Step-By-Step to Convert HD to MKV for Mac

Interface

Step 1. Download and install the program, then double click it to run it, and then you'll see the main interface of the program.

Load Files

Step 2. Click "Add File(s)" button. Here you can select "Add Video" or "Add Folder" button to add files as you like.

Profile

Step 3. Click the drop-down arrow right beside the "Profile" column and select your desired video format from the drop-down list.

Edit

Step 4. Click "Edit" button to customize the output video like Effect, Trim, Crop, 3D Settings and Watermark.

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