We've all been there: you just wanted to cut the first ten seconds off a video, or turn a clip into a GIF for the group chat — and suddenly you're downloading a 2 GB editor, watching a tutorial, accepting terms of service, and discovering the free version stamps a watermark. For a thirty-second task.
With César, that same task is one sentence:
"Trim this video from second 12 to 45"
You attach the file in the chat, say what you want, and the result comes back ready to download. That's it.
What you can do with video
César processes your videos on its own servers — no software to install, no sketchy "free converter" site. Through the chat, you can ask it to:
- Trim — just the part that matters, at the timestamps you give;
- Convert — the video that won't open at its destination becomes an MP4 that opens anywhere;
- Compress and resize — the 300 MB video that won't go through WhatsApp becomes one that will;
- Merge — several clips into one video, in the order you say;
- Speed up or slow down — a timelapse out of a long video, slow motion out of a fast moment;
- Make a GIF — the funny bit, ready for the group chat;
- Extract the audio — a recorded talk becomes an audio file for your commute;
- Grab a thumbnail — the right frame of the video as an image;
- Watermark — your logo over the video before you publish;
- Burn subtitles — the subtitle file baked into the video, for places where external captions don't work.
Each request becomes a job that runs in the background: you keep chatting, and César tells you when the result is ready — with a preview and a download button right in the conversation. Changed your mind halfway? One click cancels.
And with images: create and edit by conversation
The photo side goes beyond touching up what you already have — César also creates:
"Generate an image of a golden dog wearing sunglasses on a beach"
"Take this product photo and swap the background for a clean white one"
"Give this picture a winter mood, with snow"
You describe, it draws. Send a photo along, and it edits yours. And for everyday chores, the classic tools answer to a sentence too: format conversion (the iPhone HEIC nobody can open becomes a JPG) and cropping to whatever framing you ask for.
Why this beats an editing app
- Zero learning curve. No timeline, no export dialog, no hidden menu. If you can explain what you want, you already know how to use it.
- Works from anywhere. In the browser, on the iPhone — and the result reaches you wherever you are, including on WhatsApp.
- Your files, your privacy. Processing runs on César's own infrastructure, in your private storage — not on some random website that keeps a copy of your video.
- It's just one of the things it does. The same assistant that edits your video keeps an eye on your bills, tracks packages, builds your daily briefing and even builds apps for you. One subscription, one whole assistant.
Try it with a real video
- Create your free account — no credit card;
- Attach a video or a photo in the chat;
- Ask in plain language for what you'd do in an editor — or what you never learned to do in one.
The 2 GB editor can stay uninstalled.