Merge videos into one file on your Mac
Your camera split one recording into several clips, and you want them back as a single file. ClipMend joins them in queue order — losslessly when they're compatible (which split segments always are), locally, with nothing uploaded.
Why your recording is in pieces
GoPros, dashcams and many cameras chop a long recording into chunks — often around 4 GB because SD cards are formatted FAT32, or by a fixed loop length. The pieces (GX010001, GX020001…) are meant to play one after another. Merging simply rejoins the original take.
How to merge with ClipMend
- Open ClipMend → QUICK and drop in your clips. Add them in the order you want them joined — the output follows the queue order.
- Pick the Merge tile. ClipMend probes the files and tells you which path it will take.
- Choose the path:
- Lossless — if the clips share codec, resolution and frame rate (segments from one camera), they're joined with frames copied 1:1, instantly, with no quality loss.
- Re-encode — if the clips differ, ClipMend normalizes them to the first clip's parameters and encodes a clean H.264/H.265 file.
- Press Convert. The output is named
<first>_joined, saved next to your source.
Everything runs on your Mac — no upload, no account.
Lossless vs re-encode — which you'll get
ClipMend checks the files for you and says so plainly in the panel. Segments from the same camera are always compatible, so you get the instant lossless join. You'd only hit re-encode if you're merging clips from different sources (e.g. a phone clip plus a drone clip) — and then normalization is exactly what you want.
FAQ
Will the join be seamless?
For compatible segments, yes — they were one continuous recording, so the lossless join is frame-accurate. Re-encoded merges of mixed sources are seamless too, normalized to one resolution and frame rate.
I rescued broken segments first — can I then merge them?
Yes. Rescue the broken pieces in REPAIR (batch rescue handles a whole card at once), then merge the recovered clips in QUICK. Recovery and rejoin, both local.
Can it merge clips with and without audio?
It handles that honestly: if audio presence differs, it takes the re-encode path so the result is consistent rather than silently dropping or mismatching tracks.
Join your clips into one file
ClipMend for macOS — free public beta. Merge is free, lossless when possible, and runs entirely on your Mac.
⬇ Download ClipMend