EduLearn Video Streaming & Learning Platform

Un-segmented MP4 Streaming

Mobile browsers were forced to download large chunks of raw MP4 media before video playback could begin, creating severe initial latency.

Unprotected CDN S3 Buckets

Direct public S3 URLs allowed automated bots to download entire curriculum directories without authentication.

Monolithic Relational Quiz Engine

Concurrent quiz submissions at the conclusion of live webinars created database lockups and delayed test score delivery.

Video Streaming & Content Security

• Automated HLS (HTTP Live Streaming) transcoding generating 1080p, 720p, 480p, and 360p adaptive bitrate streams
• Cryptographically signed CloudFront cookies and URLs expiring after 2 hours
• Encrypted AES-128 HLS chunk encryption preventing stream ripping

Educational Functionality

• Interactive mid-video quiz popups blocking playback progression until answered
• Heartbeat telemetry tracking active viewing time vs. idle background tab states
• Automated PDF certificate generation upon course completion

Media Pipeline & Cloud Architecture

• AWS S3 and MediaConvert transcoding preset automation
• CloudFront key-pair configuration and signed cookie middleware
• FERPA data privacy architecture and student role permission design

Custom Player Component & Telemetry Engine

• Custom video player with playback rate control and quality selector
• WebSocket-backed telemetry reporting 5-second viewing heartbeats
• Interactive question markers overlaid on the video scrub bar

Course Catalog, Quizzing & Certification

• Timed multiple-choice and code-evaluation assessment modules
• Automated PDF certificate generator with verifiable cryptographic QR hash
• Student gradebook and instructor cohort analytics dashboard

Load Stressing & Multi-Region CDN Verification

• JMeter simulated streaming load test across 10 global regions
• Edge caching optimization achieving 96% CloudFront hit ratio
• Production deployment and technical documentation handoff

Schema.org Course & EducationalOccupationalCredential Markup

Injected structured Course and LearningResource JSON-LD graphs detailing course instructor credentials, modules, and estimated duration.

Dynamic Video Thumbnail Poster Generation

Automatically extracted high-resolution video frame posters converted to WebP with responsive sizing for search card previews.

Automated AWS MediaConvert Transcoding Pipeline

An S3 PUT event triggers an AWS Lambda function creating an Elemental MediaConvert job producing Apple HLS manifest files with segmented .ts fragments.

Signed Cookie Access Verification Middleware

Next.js middleware validates the student's JWT session and generates CloudFront cryptographic signed cookies with a 2-hour TTL.

Signed CloudFront URLs & Cookie Auth

HLS video manifests are encrypted with time-limited HMAC signatures tied to active authenticated learner sessions.

Anti-Cheating Assessment Sandboxing

Quiz engines utilize focus-loss event listeners, time-budgeted questions, and client-side entropy randomization.

SOC-2 Aligned Cloud Infrastructure

AWS MediaConvert and PostgreSQL instances run in private VPC subnets with zero public ingress.

1. Adaptive Bitrate Is Mandatory for Global EdTech

Transcoding into 360p and 480p streams allowed students on weak cellular connections to complete courses without playback abandonment.

2. Edge Authorization Protects Cloud Egress Budgets

Blocking unauthenticated scrapers at CloudFront edges prevented unauthorized bot traffic from inflating AWS S3 data transfer costs.