How to Convert MKV Files to MP4 (Free)

How to Convert MKV Files to MP4 (Free)

Here we can see “How to Convert MKV Files to MP4 (Free)

Do you have a video in the MKV file that you cannot open because some program (like Sony Vegas Pro) doesn’t support this format? If so, you almost certainly wonder the way to convert it into some different format. I just discovered how to try to to this.

To understand this method, first, you would like to understand that media file formats are just containers (for example, MKV is Matroska). Each format encapsulates a group of streams, usually one video and one audio stream. Now, each stream is encoded using some specific codec. There could also be various codecs used, except for the File I needed to convert. Media Player Classic (my favourite movie player, installed with K-Lite Codec Pack) shows the following information after selecting File> Properties:


Type: Matroska

Video: MPEG4 Video (H264) 720×400 25fps [V: English [eng] (h264 main L4.0, yuv420p, 720×400) [default]]

Audio: AAC 44100Hz stereo [A: aac lc, 44100 Hz, stereo [default]]

MPEG4 Video is that the same codec that will be used with MP4 file format! So it means we could convert (“repack”) the File to the only different container format, rewriting streams as-is without actually converting video or audio – which should be in no time (converting an extended movie takes only a few seconds) and wouldn’t cause any quality loss.

To do that, I used a VLC media player. This program has its own set of codecs for several video and audio formats, so it doesn’t depend upon codecs installed in Windows. The player is just an overlay on top of a robust library, which will also do various things, like streaming video over a network (that’s probably where the corporate name “VideoLAN” comes from) or convert files.

So to convert an MKV file to MP4:

  1. Run “VLC media player”.
  2. From the main menu, select “Media” > “Convert / Save…”.
  3. Then, on the “File” tab, click the “Add…” button.
  4. Choose your MKV file. then, it should be added to the list. (Alternatively, you’ll drag&drop a file into the list.)
  5. Click the “Convert/Save” button.
  6. Select Profile: “Video – H.264 + MP3 (MP4)”.
  7. Click on the icon button that has a hint: “Edit selected profile”.
  8. On the “Encapsulation” tab, leave “MP4/MOV” selected.
  9. On the “Video codec” tab, check both “Video” and “Keep original video track”.
  10. On the “Audio codec” tab, similarly, select both “Audio” and “Keep original audio track”.
  11. Click the “Save” button.
  12. In the “Destination” selection, click the “Browse” button to pick the directory and file name for your destination MP4 File.
  13. Click the “Start” button.
  14. Observe the progress bar within the main window as the File is converted.
  15. After that, my VLC (version 2.2.1) seems to hold in an infinite loop, so I even have to kill it using the system “Task Manager”, but it doesn’t matter – the destination file is already created.


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