How to convert MKV to MP4
- Add your .MKV file - drop it in the box above or click to browse.
- Convert it to .MP4 in a few seconds.
- Download your new .MP4 file.
What to expect
- A remux (
-c copy) is lossless - it moves raw stream data between containers without decoding; re-encoding in HandBrake or VLC always reduces quality to some degree. - MP4 cannot carry PGS image subtitles (common in Blu-ray rips); SRT subtitles can be kept by adding
-c:s mov_text, but image-based tracks must be burned in or dropped. - DTS audio is not supported in MP4 and must be re-encoded to AAC - add
-c:a aacto the FFmpeg command.
Frequently asked questions
Does converting MKV to MP4 lose quality?
Only if you re-encode. An FFmpeg remux with
-c copy copies stream data byte-for-byte, so quality is mathematically identical to the source.Why does my TV play MP4 but reject MKV?
The TV most likely does not support the Matroska container or a codec inside it (often HEVC video or DTS audio). Remuxing to MP4 fixes the container; if playback still fails, re-encode the incompatible stream.
What happens to subtitles when I convert?
SRT text subtitles can be converted to the
mov_text format that MP4 supports; PGS image subtitles (Blu-ray rips) cannot be stored in MP4 and must be burned into the video or removed.My FFmpeg remux has no audio - what went wrong?
The audio track is likely DTS, which MP4 does not support. Add
-c:a aac to re-encode just the audio while keeping the video stream copied as-is.Programs that convert MKV: Miro Video Converter · Any Video Converter FREE · AviDemux · ConvertXtoDVD · Free Studio · Freemake Video Converter · iPad Video Converter Factory Pro · MediaCell Video Converter
