The same clip does not fit everywhere
A video that fills the screen in a vertical feed arrives with black bars in a landscape player, and a landscape clip posted to a vertical feed becomes a thin strip in the middle of the phone. Each placement has its own shape, and a clip made for one shape loses space, or loses its edges, in the others.
Four shapes cover nearly every place a short video is published:
| Shape | Size in pixels | Where it is used |
|---|---|---|
| Vertical 9:16 | 1080 × 1920 | reels, shorts, stories, full-screen feeds |
| Square 1:1 | 1080 × 1080 | feed posts and square ad placements |
| Portrait 4:5 | 1080 × 1350 | feed posts that take more of the screen than a square |
| Landscape 16:9 | 1920 × 1080 | video sites, web pages, presentations |
Editing the clip four times is the slow way. Each manual pass means setting the size, the framing, the frame rate and the sound again, and a slip in any of them means exporting from the start. OneClip takes one upload and returns the four files.
Three ways to fit one frame into another
Changing the shape of a video always costs something: either part of the picture, or part of the canvas. OneClip lets you choose which.
- Blur. The whole video is fitted inside the new shape and the empty space is filled with a blurred, enlarged copy of the same video. Nothing is cut, and there are no hard bars. This is the default, and it suits most clips.
- Crop. The video is enlarged until it fills the new shape, and what falls outside the centre is cut. It looks native in the feed, but only when the subject stays near the middle. Text near the edges will be lost.
- Pad. The whole video is fitted inside and the rest is a flat colour that you pick. Use it when your brand colour should frame the clip, or when the clip carries captions that must not be cut.
A size that already matches the shape of your source is simply encoded again, with nothing added and nothing cut.
What you upload, what you get
You upload one video: MP4, MOV, WebM or MKV, up to 200 MB and up to three minutes long. You choose from one to four of the sizes, the way of fitting, and whether to keep the sound.
Each size comes back as an MP4 file encoded with H.264 at up to 30 frames per second, with stereo sound, and prepared so that it starts playing before the download finishes. If you chose more than one size, you also get everything in a single ZIP. Muting is one switch, for the placements where you will add music inside the platform itself.
The output files carry none of the hidden data of the source: no location, no device name, no recording dates. What you publish is the picture and the sound, nothing else.
Try before you pay
The preview is free. It shows the first six seconds of every size you chose, at reduced resolution, silent and with a visible mark, so you can judge the framing before you spend anything. If the crop cuts a face or a caption, switch to blur or pad and preview again.
When the framing is right, one run produces the clean, full-quality files. If you notice a wrong choice after the run, a finished job can be corrected once, free of charge, within 24 hours: the same video with corrected options.
A short checklist before you export
- Keep the subject and any text near the centre while filming, so every shape has room.
- Decide the fitting by the content: blur for general clips, crop for centred subjects, pad for clips with captions.
- Preview all four sizes, not just the one you publish first.
- Export once and keep the ZIP, so the next placement is already prepared.
