Convert MKV to MP4 Without Quality Loss (Step-by-Step Guide)

Converting an MKV file to MP4 is often required when a device or video editor does not support the MKV container.
Using XMedia Recode, you can change the container format quickly without re-encoding the video.

This process is called remuxing. It copies the existing video and audio streams into a new MP4 container without changing the quality.

Advantages of Converting MKV to MP4

• No quality loss
• Extremely fast conversion
• Small CPU usage
• Works with most modern codecs

Step 1. Import the MOV/MKV file: Click "File" and select the MOV/MKV file you want to convert.

Step 2. Select the video track

After loading the file:

• Click on the video entry
• Select the desired title or track

This step is important if the MKV file contains multiple audio or subtitle tracks.

MP4 container format supports the following codecs

The MP4 format is a versatile container that supports a wide range of audio, video and subtitle codecs. The choice of codecs depends on quality, compression and compatibility requirements. H.264 and AAC are the most widely used codecs, while HEVC and AV1 are becoming increasingly important. Subtitles are typically embedded as text files, allowing for flexible and cross-platform use.

Step 3. Choose output format: Select MP4 format from the "Format" drop-down menu.

The MP4 format offers clear advantages in terms of compatibility, file size, streaming and ease of use on a variety of devices and platforms.

Step 4. Enable "Copy stream only"

The "Copy stream only" feature in XMedia Recode is a feature that allows you to copy a video file or audio file without re-encoding the stream.

This feature is especially useful if you just want to change the container format or adjust some metadata without recompressing the file.

Advantages of the Copy Stream function

• Speed: Since the stream is simply copied, the process takes significantly less time than re-encoding.
• No loss of quality: Since no re-encoding takes place, the quality of the video or audio and the file size remain unchanged.

Step 5. Select the storage folder for the video file

Click the "Browse" button and select a folder.

Step 6. Start video conversion

Click the "Add Job" button

The file will be added to the processing queue.

Click the "Encode" button

Step 7. Convert video

Your MKV file will now be remuxed into an MP4 container.

The process typically takes a few seconds to a few minutes, depending on file size.

Step 8. Conversion finished

The MKV file has now been successfully converted into the MP4 container format.

Because the Copy Stream Only option was used, the original video and audio streams were copied directly into the new container. This means the conversion process is extremely fast and there is no loss of video or audio quality.

The resulting MP4 file can now be played on most devices such as smartphones, tablets, video editors, smart TVs and media players.

You can now open the output folder and use the converted MP4 file for playback, editing or uploading to streaming platforms.

FAQ – MKV to MP4 Conversion

Does converting MKV to MP4 reduce video quality?

No. If you use the "Copy Stream Only" option, the video and audio streams are simply copied into the MP4 container without re-encoding.

How long does MKV to MP4 conversion take?

Since the video is not re-encoded, the process usually takes only a few seconds.

Can all MKV files be converted to MP4?

Most MKV files can be converted as long as the codecs are supported by the MP4 container.