Convert MP4 to MKV
Convert MP4 to MKV in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.
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Convert MP4 to MKV in batches online. Use ready-made profiles or compatible codec controls for free, with no sign-up or watermark.
MP4 is commonly used for widely compatible playback, sharing, and web delivery. MKV is a practical output for flexible storage with support for multiple audio and subtitle tracks.
Changing containers or codecs can affect file size, compatibility, and quality. Compatible MKV codec choices are H.265 / HEVC, H.264, VP9, and AV1.
Process an occasional batch without a watermark or account. Create a free account to save one setup as a recipe, or upgrade for more recipes and automatic delivery to Google Drive or Dropbox.
Your current plan is Free.
Basic unlocks 4 files per batch, 300 MB per file, and 10 minutes of processing time. Compare plans