The 16MB wall
WhatsApp caps the videos you can send at roughly 16MB. Go over it and the message either fails or WhatsApp crushes the quality on its own terms. Since a modern phone shoots 1080p or 4K at tens of megabytes per minute, almost anything longer than a quick clip hits the wall.
Mynify fixes this without touching WhatsApp’s mystery-meat compression: it shrinks the video on your device to land just under 16MB, so WhatsApp sends it as-is instead of re-crushing it.
How the WhatsApp preset works
The WhatsApp · 16MB preset (already selected here) measures your clip’s duration and picks the bitrate that fills the 16MB budget as fully as possible — bigger budget than Discord’s, so you keep more detail. The result is a standard H.264 MP4 that plays on any phone. You’ll see the estimated size before you download.
Where your browser supports it (Chrome, Edge, Android), the compression runs on your phone’s hardware video encoder, so it’s quick even on mobile. Everywhere else, a reliable fallback engine takes over automatically.
Tips for Status and chats
- For Status, cut to 30 seconds. That’s the per-clip display limit, and a tighter clip under the same 16MB budget looks noticeably crisper.
- Portrait stays portrait. Mynify preserves your video’s orientation, so vertical phone clips don’t come out sideways.
- Send in one piece. Splitting a long video across multiple sends keeps each part higher quality than forcing the whole thing into 16MB.
Chat send vs. “send as document”
WhatsApp actually has two paths. A normal video message is capped near 16MB and gets re-compressed on send. Attaching the same file as a document raises the ceiling dramatically (up to 2GB) but drops the inline preview and autoplay — the recipient has to tap and download it. For anything you want to look like a video in the chat, compress it under 16MB and send it normally; that’s what this tool is for. Save the document trick for when you genuinely need to move a large original and don’t mind the clunkier experience.
There’s no signup and no limit on how many videos you compress — and because it’s all local, the video you’re sending to a friend or family member never leaves your device.