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MP4 to MKV Converter
MP4 to MKV Converter
Upload an MP4 file to convert it into an MKV format.
Select MP4 File:
Convert to MKV
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Frequently Asked Questions
Why convert MP4 to MKV?
MKV supports multiple audio tracks, subtitle tracks, and chapters. It is a better container if you need to add or preserve these features.
Will the video be re-encoded?
If the video codec is compatible, the stream is repackaged without re-encoding, preserving full quality.
Is MKV better than MP4?
MKV is more flexible as a container. MP4 is more universally compatible. The best choice depends on your use case.
Can I add subtitles to the MP4-to-MKV output?
Yes. Use MKVToolNix to add SRT or ASS subtitle files to the MKV without re-encoding the video.
Does MKV support Dolby Atmos audio?
Yes. MKV supports Dolby Atmos (TrueHD Atmos) and DTS:X audio tracks.
Can I play MKV on a LG or Samsung TV?
Most modern LG and Samsung smart TVs support MKV playback via USB.
What is the best player for MKV on Windows?
VLC Media Player and MPC-HC are the most reliable MKV players on Windows.