# Secure video streaming: Encrypted video that students can watch but cannot copy

Every upload becomes an AES-128 encrypted, multi-quality HLS stream with a moving watermark and download controls.

## What it does

- Automatic transcoding into several qualities for slow mobile data
- AES-128 encrypted HLS with per-video keys
- Moving watermark with the student's details
- Screen recording blocked or reported
- Encrypted offline downloads only inside the app
- Video chapters, bookmarks, speed, quality, audio track and subtitles

## Upload once, use everywhere

A video is uploaded to the library once and placed in as many chapters and courses as you like, up to 50 places at a time. Fix or replace it once and every course gets the change.

## Built for slow mobile data

Adaptive streaming picks the right quality for each connection, and students can download for offline viewing when the institute allows it. Downloads stay encrypted and play only in your app.

Updated: 2026-11-11
Source: https://lariyo.com/features/secure-video