So konvertierst du MTS- und M2TS-Camcorder-Dateien

AVCHD is a recording specification, not a single file format. The camera encodes H.264 video and AC3 or PCM audio, then wraps them into an MPEG transport stream — the same packet-based structure used for satellite and terrestrial broadcast. That structure is chosen because it survives dropouts and power loss on a memory card, which is exactly the opposite of what an editing timeline wants.

The consequence is that the video inside your MTS file is perfectly ordinary and widely supported, while the wrapper around it is not. Most conversion problems disappear once you understand that you are changing the packaging, not the picture.

MP4 is the right answer whenever the clip has somewhere to go: a phone, a smart TV, a messaging app, a social upload or a colleague on an unknown machine. It is the most broadly supported video container in existence and every editor imports it without complaint.

MKV is the right answer when the clip is going into an archive. It carries multiple audio tracks, chapter markers, subtitles and unusual codecs without conversion losses, which matters for multi-microphone shoots or footage you may want to remaster later. Many people keep an MKV master and export MP4 copies for sharing.

1. Copy the entire AVCHD or PRIVATE folder off the SD card before touching anything — never convert directly from the card.
2. Open the Morphio MTS or M2TS converter in your browser.
3. Drag in all the clips from one recording session at once; batch conversion runs file by file locally.
4. Pick MKV for an archive master, or MP4 if the clip is going straight to a viewer.
5. Download the results and import them into your editor in numeric order.

Camcorder cards are usually formatted with a filesystem that cannot hold a single file above roughly 2 GB, so the camera silently starts a new file when it reaches the ceiling. A twenty-minute recording can therefore arrive as four or five clips with sequential numbers.

The split is frame-accurate: laid end to end in the same order, the clips reproduce the original recording exactly. Convert each one, drop them onto the timeline in numeric order, and the join is invisible. Sorting by filename rather than by modification date matters here, because copying can scramble timestamps.

Think about what is actually on a camcorder card: weddings, birthdays, children, the inside of your home, conversations recorded without anyone considering an audience. Standard online converters ask you to upload every gigabyte of that to a server you know nothing about, where it sits until some retention policy deletes it.

Converting in the browser removes the question. The decoder runs as WebAssembly inside your tab, reads the file from disk, writes the result back to your downloads folder, and never opens a network connection. You can confirm it yourself by watching the Network panel stay silent while a 4 GB clip converts.