Many clips.
One video.
Join your MP4 and MOV clips into a single continuous file, in the order you choose — locally, with no upload and no watermark.
How do I merge videos for free? Add your clips, arrange the order, press Merge. The tool decodes and re-encodes them into one MP4 on your device — a few minute-long clips take well under a minute. Nothing is uploaded.
Video merger
The output uses the first clip's size — other sizes are letterboxed, never stretched. Merging re-encodes once at a bitrate averaged from your clips, so keep the originals until you've checked the result.
Why merging needs a re-encode
Cutting, rotating, and muting can be done losslessly because they only rearrange the original data. Joining is different: two separate files have independent frame numbering, codec settings, and timelines, so the merge decodes each clip and writes one continuous new stream. Our merge does it in a single encoding pass — you pay one generation of quality, not one per clip.
Getting a good merge
- Order matters — use the ↑ / ↓ buttons to arrange clips; the first clip also sets the output size
- Mix orientations freely — portrait and landscape clips both work; portrait phone footage is normalized upright automatically
- Similar clips merge cleanest — same size and orientation throughout means no letterbox bars at all
- Check the join points — play the merged file once to confirm the transitions land where you want
When you'd use this
Combining a few takes into one clip for a class project. Joining screen recordings into a single tutorial. Merging phone clips into one video before sending to family. Stitching dashcam segments. If the result is too large to share, the compressor shrinks it next; if you need to cut something out first, use the trimmer (which works without re-encoding). Honest limits: clips must be MP4/MOV with H.264/HEVC video and AAC audio; audio from clips with different audio settings is skipped rather than resampled, and the tool says so when it happens.
How do I merge videos into one file?
Add two or more MP4 or MOV clips, arrange them in the order you want, and press Merge. The tool decodes and re-encodes them into a single continuous MP4 on your device — nothing is uploaded and there is no watermark.
What happens when the clips have different sizes?
The output uses the first clip's size. Other clips are scaled to fit and letterboxed with black bars — nothing is stretched or cropped. For the cleanest result, put a clip of the size you want first.
Is there a limit on file count or length?
No fixed limit — the merge runs on your device, so the practical limit is your computer's memory and patience. A handful of minute-long clips merges in well under a minute; long 4K footage takes longer since everything is re-encoded once.
Is the audio merged too?
Yes — audio from each clip is joined continuously in the same order, as long as the clips use AAC audio at the same sample rate. Clips with different audio formats get merged without their audio, which the tool reports honestly.
Do rotated phone clips work?
Yes. Clips that carry rotation metadata are normalized to their display orientation before merging, so portrait phone footage merges upright instead of sideways.