Observe progress bar in the main window as file is converted.In 'Destination' selection, click 'Browse' button to select directory and file name for you destination MP4 file.On 'Audio codec' tab, similarly select both 'Audio' and 'Keep original audio track'.On 'Video codec' tab, check both 'Video' and 'Keep original video track'.On 'Encapsulation' tab, leave 'MP4/MOV' selected.Click on the icon button that has hint: 'Edit selected profile'.

(Alternatively, you can drag&drop a file into the list.) After that, it should be added to the list.

From main menu select 'Media' > 'Convert / Save.'.

The player is actually just an overlay on top of a powerful library that can also do different things, like streaming video over network (that's probably where the company name 'VideoLAN' comes from) or convert files. This program has its own set of codecs for many video and audio formats, so it doesn't depend on codecs installed in Windows. MPEG4 Video is the same codec that may be used with MP4 file format! It means we could convert ('repack') the file to just different container format, rewriting streams as-is without actually converting video or audio - which should be very fast (converting a long movie takes only few seconds) and wouldn't cause any quality loss. There may be various codecs used, but for the file I needed to convert, Media Player Classic (my favorite movie player, installed with K-Lite Codec Pack) shows following information after selecting File > Properties: Now, each stream is encoded using some specific codec. Each format encapsulates a set of streams, usually one video and one audio stream.

To understand this method, first you need to know that media file formats are just containers (for example, MKV is Matroska). The feature we need can be found in menu File > Remux Recordings. This is a free and open source app intended mostly for video recording and streaming. Important update : I found another way to quickly remux MKV to MP4 using OBS Studio. I keep it for reference, but it probably doesn't reflect my current knowledge and beliefs.ĭo you have a video in MKV file and you can't open it because some program (like Sony Vegas Pro) doesn't support this format? If so, you probably wonder how to convert it into some different format. Warning! Some information on this page is older than 6 years now.

How to use makemkv forever