How to convert MK3D to subtitles with automated transcription 
Step 1
Sign up for a free Sonix trial account—includes 30 minutes of free MK3D to subtitles conversion.
Step 2
Upload the Matroska 3D Video File file(s) (*.MK3D) from your computer, Dropbox, Google Drive, or by dragging it on the page.
Step 3
Choose the language spoken in the uploaded MK3D file. We support over 37 different languages including English, Spanish, German, and French. Then click the 'Start Transcribing Now' button.
Step 4
Sonix will then automatically transcribe the audio from your MK3D file and convert it to a simple text format. Grab some tea, it will take only a few minutes.
Step 5
Use the Sonix AudioText Editor to polish your transcript before we convert it to a subtitle. It's like a word processor: simply type in your browser to correct any words.
Step 6
Click the 'Export' button. Choose either 'Subrip subtitle file (.srt)' or 'WebVTT file (.vtt)' from the dropdown to download the subtitle version of your MK3D file. You can also adjust the character length and time duration length of each subtitle.
That's it! Your MK3D file has now been converted to subtitles and is ready for the next step in your workflow!
Thousands of incredible customers create subtitles from their MK3D files with Sonix 
Convert MK3D video files to subtitle
Frequently Asked Questions for Matroska 3D Video File (*.MK3D)
What is a MK3D file?
The Matroksta 3D (MK3D) file format is used for storing 3D content (video and audio) while using the standard MKV container. However, it also uses a StereoMode field for 3D video files which have a variety of configurations such as side by side (left eye is first) or top-bottom (right eye is first). The Matroska file format is seeking to be the future of 3D audio and video file formats. It was derived from a project called MCF, but MK3D files differentiate themselves from it significantly because it is based on EBML (Extensible Binary Meta Language), a binary derivative of XML. EBML enables the Matroska Development Team to gain significant advantages in terms of future format extensibility, without breaking file support from old media parsers.
Does Sonix transcribe video files with a *.MK3D file extension?
Yes, Sonix does automatically transcribe video files with a .MK3D file extension. Sonix is an online video to text converter. Convert any audio (mp3, m4a, wav, ...) or video (mk3d, mp4, mov, avi, ...) file to text without installing any software! Sonix quickly and accurately transcribes *.MK3D files and converts them to text in a subtitle format.
Know anyone who needs to convert Matroska 3D Video File (.MK3D) to subtitle?
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Other ways to convert your MK3D video files with Sonix
Convert Matroska 3D Video File to subtitles (SRT & VTT) with Sonix 
Sonix transcribes your audio and video files in over 37 languages so they are easy to search, edit, and share. Sonix is an online, fully-automated speech to text service that quickly converts Matroska 3D Video File files to subtitles. Sign up today and start transcribing.
Includes 30 minutes of free transcription
