Arrange and join up to five video clips. Your files are processed privately in your browser.
Choose 2 to 5 clips. You can arrange them before joining.
Drag clips to set the exact order of the final video.
Compatible clips join quickly. Other clips are re-encoded locally and may take longer.
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Join up to five video clips into a single MP4 without uploading them to a server. Add your clips, drag their thumbnails into the order you want, and download the finished video.
When every clip uses compatible video and audio settings, RizCraft can join them quickly without changing their quality. If their formats, dimensions, or codecs differ, the clips are normalized and re-encoded automatically. Longer videos can take more time because all processing happens on your device.
Select between two and five clips, then drag the thumbnail cards into the exact sequence you want. The number on each thumbnail shows its position in the finished video. You can remove a clip or add another one before joining.
After you click Join Videos, the tool checks the video codec, resolution, frame rate, and audio settings of every clip. Compatible clips use a fast join that copies the original streams. Other combinations are converted to a consistent MP4 with H.264 video and AAC audio before they are joined.
The fastest combination is usually a group of MP4 clips recorded with the same device or exported with the same settings. Re-encoding is commonly needed when you mix MP4, WebM, MOV, MKV, or AVI files; combine portrait and landscape clips; use different resolutions or frame rates; or mix clips with and without audio.
WebM files using VP8 or VP9, MOV files using HEVC or ProRes, and older AVI files generally take longer because they normally need to be converted to H.264/AAC MP4. Two files with an .mp4 extension can also require re-encoding when their internal codecs or recording settings differ.
This tool is best for short and medium-length clips. Video processing uses your browser's memory and CPU, and re-encoding can temporarily require substantially more memory than the combined file sizes. A modern desktop browser is recommended for larger clips.
Very long, 4K, high-frame-rate, or multi-gigabyte videos may take a long time, make the browser tab unresponsive, or fail if the device runs out of memory. For feature-length footage or large professional files, a desktop video editor is a better choice. Keep the tab open and avoid putting the device to sleep while processing.
It is designed primarily for short and medium-length clips. Very long, 4K, high-frame-rate, or multi-gigabyte videos can exceed the memory available to a browser tab. For feature-length or professional footage, use a desktop video editor.
MP4, M4V, WebM, and browser-compatible MOV files provide the most reliable results. The file picker also allows MKV and AVI, but these files can be added only when the browser can read them and generate a thumbnail. Some HEVC, ProRes, MKV, or AVI files may therefore be rejected before processing.
WebM with VP8 or VP9, MOV with HEVC or ProRes, MKV, and older AVI files usually need re-encoding and therefore take longer. Mixing formats, resolutions, frame rates, aspect ratios, or audio layouts also triggers the slower path. Matching H.264/AAC MP4 clips are usually fastest.
Compatible clips are joined without re-encoding, so their original streams and resolution are preserved. Incompatible clips must be converted to consistent H.264/AAC settings, which can cause a small quality change. When re-encoding is required, the output follows the first clip's aspect ratio and is capped at 1280 pixels on its longest side.
Yes. Different aspect ratios are fitted inside the first clip's output frame without stretching, with padding added where necessary. Clips without audio receive a silent track so they can be combined safely with clips that contain sound.
No. Thumbnail generation, compatibility checks, re-encoding, and joining all happen locally in your browser. Your clips are not uploaded to RizCraft's servers.
The five-clip limit helps keep browser memory use and processing time manageable. You need at least two clips before the Join Videos button becomes available.
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