Merge videos
More video tools
How your files are processed
Files are uploaded and processed on our servers, then made available for download.
What this tool does
Merge videos processes your video on our servers and returns a download link.
Pick this path when the task needs more CPU, GPU, or memory than a typical browser tab should spend on one file.
- FFmpeg workers — Merge videos uses demux, encode, and mux steps on our video stack—trim, merge, extract audio, burn subtitles, or strip tracks without a local NLE.
- No editor install — Open a current browser on Windows, macOS, or Linux; the heavy timeline work runs remotely.
- Pair with converters — Need MP4 from MOV first? Run a converter, then return here for mute, trim, or subtitles.
How to use Merge videos?
- Select videos — choose 2–10 files that share the same container family so concatenation stays reliable.
- Order matters — files are merged in the order you attach them; rename or re-select if the storyboard is wrong.
- Download — grab the combined output from the job panel before links expire.
Why use Merge videos?
Merge videos concatenates multiple clips into one timeline—useful for dashcam segments, interview takes, or chaptered exports without opening an NLE.
Stick to compatible codecs and resolutions for the smoothest mux.
Common uses for Merge videos
- Stitch event B-roll in capture order.
- Combine split recordings from mobile screen capture.
- Join short promos into a single upload for hosting.
- Drop results into Slack threads—the /tools/merge-videos merge videos flow matches Windows and macOS Chrome.
Output quality tips for Merge videos
Quality follows source bitrate, GOP spacing, and whether the tool re-encodes or copies streams.
Each generation of H.264 or HEVC can add blocking—preview on the phone or TV your audience uses before deleting masters.
Merge videos: /utilities vs FFmpeg workers
Browser utilities (/utilities)
JSON formatters and regex testers stay local. They cannot demux H.264, merge MOV segments, or burn subtitles into frames.
This video tool (upload)
Merge videos uploads to our FFmpeg-backed workers for trims, merges, subtitle burns, or audio stripping—then serves a download like our converters.
Keep browser utilities for string tasks. Choose Merge videos when you need GOP-aware cuts, mux changes, or caption burns that need FFmpeg server-side.
Troubleshooting
- Upload fails or stalls: refresh the page, try another browser, or pause strict blockers for this site.
- Extension mismatch: compare your filename with the types named on this page above the upload control.
- Unexpected output: verify time ranges, pixel boxes, OCR languages, or watermark opacity, then rerun once.
- Large file limitations: Merge videos jobs can exceed upload or processing limits; try a shorter clip first.
- Playback issues: if a result will not play, try a more widely supported container/codec via a converter.