feat: Add multi-CDN integration for global video delivery

- Create CDN manager with multi-provider support (Bunny, Cloudflare, S3, Backblaze, Wasabi)
- Implement automatic CDN upload and failover system
- Add multi-quality video support (360p-2160p)
- Build quality selector UI with auto-detection
- Track CDN bandwidth usage for cost monitoring
- Implement cache purging API
- Add background CDN upload worker script
- Create comprehensive CDN documentation

Features:
- Multi-CDN support with priority-based failover
- BunnyCDN, Cloudflare R2, AWS S3, Backblaze B2, Wasabi integration
- Multi-quality delivery (adaptive quality selection)
- Auto quality based on connection speed
- User preference persistence
- Bandwidth tracking per provider
- Cache purge API
- Cost optimization strategies
- Production-ready with error handling
This commit is contained in:
Krystie
2026-03-30 17:45:23 -07:00
parent 3e4cfcf683
commit bdd5ab30fd
7 changed files with 1537 additions and 0 deletions
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-- Migration: Add CDN support and multi-quality storage
-- CDN provider configurations
CREATE TABLE IF NOT EXISTS db_cdn_providers (
provider_id INT AUTO_INCREMENT PRIMARY KEY,
provider_name VARCHAR(50) NOT NULL,
provider_type ENUM('bunny', 'cloudflare', 's3', 'backblaze', 'wasabi', 'custom') NOT NULL,
api_key VARCHAR(255),
api_secret VARCHAR(255),
storage_zone VARCHAR(100),
pull_zone VARCHAR(100),
cdn_hostname VARCHAR(255),
region VARCHAR(50),
is_active TINYINT DEFAULT 1,
priority INT DEFAULT 0,
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
INDEX idx_active_priority (is_active, priority)
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
-- Video quality variants (for adaptive streaming)
CREATE TABLE IF NOT EXISTS db_video_qualities (
quality_id INT AUTO_INCREMENT PRIMARY KEY,
video_id INT NOT NULL,
quality_label VARCHAR(20) NOT NULL,
resolution VARCHAR(20),
bitrate INT,
file_path VARCHAR(512),
cdn_url VARCHAR(512),
file_size BIGINT,
codec VARCHAR(50),
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
INDEX idx_video (video_id),
FOREIGN KEY (video_id) REFERENCES db_videofiles(video_id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
-- CDN cache status tracking
CREATE TABLE IF NOT EXISTS db_cdn_cache_status (
cache_id INT AUTO_INCREMENT PRIMARY KEY,
video_id INT NOT NULL,
provider_id INT NOT NULL,
quality_label VARCHAR(20),
cdn_url VARCHAR(512),
status ENUM('pending', 'uploading', 'ready', 'failed') DEFAULT 'pending',
upload_progress INT DEFAULT 0,
error_message TEXT,
last_checked DATETIME DEFAULT CURRENT_TIMESTAMP,
created_at DATETIME DEFAULT CURRENT_TIMESTAMP,
updated_at DATETIME DEFAULT CURRENT_TIMESTAMP ON UPDATE CURRENT_TIMESTAMP,
INDEX idx_video_provider (video_id, provider_id),
INDEX idx_status (status),
FOREIGN KEY (video_id) REFERENCES db_videofiles(video_id) ON DELETE CASCADE,
FOREIGN KEY (provider_id) REFERENCES db_cdn_providers(provider_id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
-- CDN bandwidth tracking (for cost monitoring)
CREATE TABLE IF NOT EXISTS db_cdn_bandwidth_usage (
usage_id INT AUTO_INCREMENT PRIMARY KEY,
provider_id INT NOT NULL,
video_id INT,
date DATE NOT NULL,
bandwidth_mb DECIMAL(12,2) DEFAULT 0,
requests_count INT DEFAULT 0,
cost_estimate DECIMAL(10,4) DEFAULT 0,
UNIQUE KEY unique_provider_video_date (provider_id, video_id, date),
INDEX idx_provider_date (provider_id, date),
FOREIGN KEY (provider_id) REFERENCES db_cdn_providers(provider_id) ON DELETE CASCADE
) ENGINE=InnoDB DEFAULT CHARSET=utf8mb4 COLLATE=utf8mb4_unicode_ci;
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<?php
/**
* CDN API
*
* GET /api/cdn.php?action=url&video_id=X&quality=720p - Get CDN URL
* GET /api/cdn.php?action=qualities&video_id=X - Get available qualities
* GET /api/cdn.php?action=bandwidth&days=30 - Get bandwidth usage
* POST /api/cdn.php?action=upload - Upload to CDN
* POST /api/cdn.php?action=purge - Purge CDN cache
*/
require_once dirname(__DIR__) . '/f_core/config.boot.php';
require_once dirname(__DIR__) . '/f_core/f_classes/class.cdn.php';
header('Content-Type: application/json');
session_start();
$current_user_id = $_SESSION['user_id'] ?? null;
$cdn = new VCDN();
$action = $_GET['action'] ?? 'url';
// Public endpoints
if ($action === 'url') {
$video_id = $_GET['video_id'] ?? null;
$quality = $_GET['quality'] ?? 'original';
if (!$video_id) {
http_response_code(400);
echo json_encode(['success' => false, 'error' => 'Video ID required']);
exit;
}
$url = $cdn->getCDNUrl($video_id, $quality);
if ($url) {
echo json_encode(['success' => true, 'url' => $url]);
} else {
http_response_code(404);
echo json_encode(['success' => false, 'error' => 'Video not found']);
}
exit;
}
if ($action === 'qualities') {
$video_id = $_GET['video_id'] ?? null;
if (!$video_id) {
http_response_code(400);
echo json_encode(['success' => false, 'error' => 'Video ID required']);
exit;
}
$qualities = $cdn->getAvailableQualities($video_id);
echo json_encode(['success' => true, 'qualities' => $qualities]);
exit;
}
// Authenticated endpoints
if (!$current_user_id) {
http_response_code(401);
echo json_encode(['success' => false, 'error' => 'Authentication required']);
exit;
}
switch ($action) {
case 'bandwidth':
$days = intval($_GET['days'] ?? 30);
$provider_id = $_GET['provider_id'] ?? null;
$data = $cdn->getBandwidthUsage($provider_id, $days);
echo json_encode(['success' => true, 'data' => $data]);
break;
case 'upload':
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
http_response_code(405);
echo json_encode(['success' => false, 'error' => 'Method not allowed']);
exit;
}
$input = json_decode(file_get_contents('php://input'), true) ?: $_POST;
$video_id = $input['video_id'] ?? null;
$local_path = $input['local_path'] ?? null;
$quality = $input['quality'] ?? 'original';
if (!$video_id || !$local_path) {
http_response_code(400);
echo json_encode(['success' => false, 'error' => 'Video ID and local path required']);
exit;
}
// Verify ownership
global $class_database;
$sql = "SELECT usr_id FROM db_videofiles WHERE video_id = ?";
$result = $class_database->execute($sql, [$video_id]);
if (!$result || $class_database->rowCount($result) == 0) {
http_response_code(404);
echo json_encode(['success' => false, 'error' => 'Video not found']);
exit;
}
$row = $class_database->fetch($result);
if ($row['usr_id'] != $current_user_id) {
http_response_code(403);
echo json_encode(['success' => false, 'error' => 'Permission denied']);
exit;
}
$success = $cdn->uploadVideo($video_id, $local_path, $quality);
echo json_encode(['success' => $success]);
break;
case 'purge':
if ($_SERVER['REQUEST_METHOD'] !== 'POST') {
http_response_code(405);
echo json_encode(['success' => false, 'error' => 'Method not allowed']);
exit;
}
$input = json_decode(file_get_contents('php://input'), true) ?: $_POST;
$video_id = $input['video_id'] ?? null;
if (!$video_id) {
http_response_code(400);
echo json_encode(['success' => false, 'error' => 'Video ID required']);
exit;
}
// Verify ownership
global $class_database;
$sql = "SELECT usr_id FROM db_videofiles WHERE video_id = ?";
$result = $class_database->execute($sql, [$video_id]);
if (!$result || $class_database->rowCount($result) == 0) {
http_response_code(404);
echo json_encode(['success' => false, 'error' => 'Video not found']);
exit;
}
$row = $class_database->fetch($result);
if ($row['usr_id'] != $current_user_id) {
http_response_code(403);
echo json_encode(['success' => false, 'error' => 'Permission denied']);
exit;
}
$cdn->purgeCache($video_id);
echo json_encode(['success' => true]);
break;
default:
http_response_code(400);
echo json_encode(['success' => false, 'error' => 'Invalid action']);
}
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<?php
/**
* Upload Videos to CDN
* Background worker for CDN uploads
*
* Usage:
* php upload_to_cdn.php <video_id> [quality]
* php upload_to_cdn.php --all (upload all pending videos)
*/
require_once dirname(__DIR__, 2) . '/f_core/config.boot.php';
require_once dirname(__DIR__, 2) . '/f_core/f_classes/class.cdn.php';
require_once dirname(__DIR__, 2) . '/f_core/f_classes/class.logger.php';
$logger = new VLogger('cdn_upload');
$cdn = new VCDN();
// Parse arguments
$video_id = $argv[1] ?? null;
$quality = $argv[2] ?? 'original';
if ($video_id === '--all') {
uploadAllPending();
} elseif ($video_id) {
uploadSingleVideo($video_id, $quality);
} else {
echo "Usage: php upload_to_cdn.php <video_id> [quality]\n";
echo " php upload_to_cdn.php --all\n";
exit(1);
}
function uploadSingleVideo($video_id, $quality) {
global $cdn, $logger, $class_database;
$logger->info("Starting CDN upload for video $video_id ($quality)");
// Get video file path
$sql = "SELECT file_path FROM db_videofiles WHERE video_id = ?";
$result = $class_database->execute($sql, [$video_id]);
if (!$result || $class_database->rowCount($result) == 0) {
$logger->error("Video $video_id not found");
return false;
}
$row = $class_database->fetch($result);
$local_path = $row['file_path'];
if (!file_exists($local_path)) {
$logger->error("Video file not found: $local_path");
return false;
}
// Upload to CDN
$success = $cdn->uploadVideo($video_id, $local_path, $quality);
if ($success) {
$logger->info("Successfully uploaded video $video_id to CDN");
echo "✓ Uploaded video $video_id ($quality)\n";
} else {
$logger->error("Failed to upload video $video_id to CDN");
echo "✗ Failed to upload video $video_id\n";
}
return $success;
}
function uploadAllPending() {
global $cdn, $logger, $class_database;
$logger->info("Starting batch CDN upload for all pending videos");
// Find videos not yet uploaded to CDN
$sql = "SELECT v.video_id, v.file_path
FROM db_videofiles v
LEFT JOIN db_cdn_cache_status ccs ON v.video_id = ccs.video_id
AND ccs.status = 'ready'
WHERE ccs.cache_id IS NULL
LIMIT 100";
$result = $class_database->execute($sql);
if (!$result) {
$logger->error("Failed to query pending uploads");
return;
}
$count = 0;
$success_count = 0;
while ($row = $class_database->fetch($result)) {
$count++;
if (uploadSingleVideo($row['video_id'], 'original')) {
$success_count++;
}
// Rate limiting (don't overwhelm CDN)
sleep(2);
}
$logger->info("Batch upload complete: $success_count/$count successful");
echo "\nBatch upload complete: $success_count/$count successful\n";
}
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# CDN Integration
EasyStream supports multi-CDN video delivery for global reach, reduced latency, and bandwidth optimization.
## Supported CDN Providers
- 🐰 **BunnyCDN** - Cost-effective, global edge network
- ☁️ **Cloudflare R2** - Zero egress fees, S3-compatible
- 🪣 **AWS S3 + CloudFront** - Enterprise-grade, highly scalable
- 🔵 **Backblaze B2** - Affordable S3-compatible storage
- 🟢 **Wasabi** - Predictable pricing, no egress fees
- 🔧 **Custom** - Any S3-compatible storage provider
## Features
- 🌍 **Multi-CDN Support** - Upload to multiple providers for redundancy
- 📊 **Automatic Failover** - Falls back to secondary CDN if primary fails
- 🎬 **Multi-Quality Delivery** - Serve 360p, 480p, 720p, 1080p, 1440p, 2160p
- 💾 **Bandwidth Tracking** - Monitor usage and costs per provider
- 🔄 **Cache Purging** - Invalidate CDN cache on video updates
- 🚀 **Auto Quality Selection** - Pick best quality based on connection speed
- 💰 **Cost Optimization** - Use cheapest provider for your traffic patterns
## Setup
### 1. Database Migration
```bash
docker-compose exec db mysql -u easystream -peasystream easystream < __install/migrations/005_add_cdn_support.sql
```
### 2. Configure CDN Provider
Add your CDN provider credentials to the database:
```sql
INSERT INTO db_cdn_providers (
provider_name, provider_type, api_key, storage_zone,
pull_zone, cdn_hostname, region, is_active, priority
) VALUES (
'BunnyCDN Production', 'bunny', 'YOUR_API_KEY',
'easystream-videos', 'easystream', 'easystream.b-cdn.net',
'de', 1, 0
);
```
**Provider Types:**
- `bunny` - BunnyCDN
- `cloudflare` - Cloudflare R2
- `s3` - AWS S3
- `backblaze` - Backblaze B2
- `wasabi` - Wasabi
- `custom` - Custom S3-compatible
**Priority:** Lower = higher priority (0 is primary)
### 3. Add Frontend Assets
Include quality selector on video watch page:
```html
<link rel="stylesheet" href="/f_scripts/fe/css/quality-selector.css">
<script src="/f_scripts/fe/js/quality-selector.js"></script>
```
### 4. Upload Videos to CDN
```bash
# Upload single video
php app_scripts/cdn/upload_to_cdn.php 123
# Upload all pending videos
php app_scripts/cdn/upload_to_cdn.php --all
```
### 5. Automate Uploads (Optional)
Add to upload workflow in `upload.php`:
```php
require_once 'f_core/f_classes/class.cdn.php';
$cdn = new VCDN();
// After video upload
$cdn->uploadVideo($video_id, $local_file_path, 'original');
```
Or run background worker via supervisor/systemd.
## CDN Provider Configuration
### BunnyCDN
1. Sign up at [bunny.net](https://bunny.net)
2. Create a storage zone
3. Create a pull zone linked to the storage zone
4. Get your API key from Account Settings
```sql
INSERT INTO db_cdn_providers (
provider_name, provider_type, api_key, storage_zone,
pull_zone, cdn_hostname
) VALUES (
'BunnyCDN', 'bunny', 'YOUR_API_KEY',
'your-storage-zone', 'your-pull-zone', 'your-pull-zone.b-cdn.net'
);
```
**Cost:** ~$0.01/GB storage + $0.01-0.05/GB bandwidth (varies by region)
### Cloudflare R2
1. Sign up for Cloudflare account
2. Enable R2 in dashboard
3. Create a bucket
4. Generate API token
```sql
INSERT INTO db_cdn_providers (
provider_name, provider_type, api_key, api_secret,
storage_zone, region
) VALUES (
'Cloudflare R2', 'cloudflare', 'YOUR_ACCESS_KEY',
'YOUR_SECRET_KEY', 'your-bucket', 'auto'
);
```
**Cost:** $0.015/GB storage, **zero egress fees**
### AWS S3 + CloudFront
1. Create S3 bucket in AWS Console
2. Create CloudFront distribution
3. Generate IAM access keys
```sql
INSERT INTO db_cdn_providers (
provider_name, provider_type, api_key, api_secret,
storage_zone, cdn_hostname, region
) VALUES (
'AWS S3', 's3', 'YOUR_ACCESS_KEY', 'YOUR_SECRET_KEY',
'your-bucket', 'd123abc.cloudfront.net', 'us-east-1'
);
```
**Cost:** $0.023/GB storage + $0.085/GB bandwidth (first 10TB)
### Backblaze B2
1. Sign up at [backblaze.com](https://www.backblaze.com/b2)
2. Create a bucket
3. Generate application key
```sql
INSERT INTO db_cdn_providers (
provider_name, provider_type, api_key, api_secret,
storage_zone, region
) VALUES (
'Backblaze B2', 'backblaze', 'YOUR_KEY_ID', 'YOUR_APP_KEY',
'your-bucket', 'us-west-004'
);
```
**Cost:** $0.006/GB storage + $0.01/GB bandwidth (first 3x storage free)
### Wasabi
1. Sign up at [wasabi.com](https://wasabi.com)
2. Create a bucket
3. Generate access keys
```sql
INSERT INTO db_cdn_providers (
provider_name, provider_type, api_key, api_secret,
storage_zone, region
) VALUES (
'Wasabi', 'wasabi', 'YOUR_ACCESS_KEY', 'YOUR_SECRET_KEY',
'your-bucket', 'us-east-1'
);
```
**Cost:** $5.99/TB/month (storage + bandwidth included)
## Usage
### Get CDN URL
```http
GET /api/cdn.php?action=url&video_id=123&quality=720p
```
**Response:**
```json
{
"success": true,
"url": "https://easystream.b-cdn.net/videos/123/720p/video.mp4"
}
```
### Get Available Qualities
```http
GET /api/cdn.php?action=qualities&video_id=123
```
**Response:**
```json
{
"success": true,
"qualities": [
{
"quality_label": "auto",
"resolution": "Auto",
"cdn_url": null
},
{
"quality_label": "1080p",
"resolution": "1920x1080",
"cdn_url": "https://easystream.b-cdn.net/videos/123/1080p/video.mp4"
},
{
"quality_label": "720p",
"resolution": "1280x720",
"cdn_url": "https://easystream.b-cdn.net/videos/123/720p/video.mp4"
}
]
}
```
### Upload to CDN
```http
POST /api/cdn.php?action=upload
Content-Type: application/json
{
"video_id": 123,
"local_path": "/srv/uploads/video.mp4",
"quality": "original"
}
```
### Purge Cache
```http
POST /api/cdn.php?action=purge
Content-Type: application/json
{
"video_id": 123
}
```
### Bandwidth Usage
```http
GET /api/cdn.php?action=bandwidth&days=30&provider_id=1
```
**Response:**
```json
{
"success": true,
"data": [
{
"date": "2026-03-01",
"bandwidth_mb": 15234.56,
"requests": 4567
}
]
}
```
## Frontend Integration
### Quality Selector
The quality selector automatically initializes on video watch pages:
```javascript
const selector = new QualitySelector(videoId, {
playerElement: document.querySelector('video'),
containerElement: document.querySelector('.video-controls')
});
```
**Features:**
- Auto quality based on connection speed
- User preference persistence (localStorage)
- Seamless quality switching (preserves playback position)
### Programmatic Quality Switch
```javascript
const selector = window.qualitySelector;
selector.switchQuality('720p', 'https://cdn.example.com/video_720p.mp4');
```
## Multi-Quality Encoding
Generate multiple quality levels from source video:
```bash
# Using ffmpeg
ffmpeg -i input.mp4 \
-vf scale=1920:1080 -c:v libx264 -b:v 5000k -preset medium output_1080p.mp4 \
-vf scale=1280:720 -c:v libx264 -b:v 2500k -preset medium output_720p.mp4 \
-vf scale=854:480 -c:v libx264 -b:v 1000k -preset medium output_480p.mp4 \
-vf scale=640:360 -c:v libx264 -b:v 500k -preset medium output_360p.mp4
```
Then upload each quality:
```php
$qualities = ['1080p', '720p', '480p', '360p'];
foreach ($qualities as $quality) {
$cdn->uploadVideo($video_id, "output_{$quality}.mp4", $quality);
}
```
## Bandwidth Tracking
Track CDN bandwidth usage automatically:
```php
$cdn->trackBandwidth($provider_id, $video_id, $bytes_transferred);
```
Integrate with analytics:
```php
// After video view
$file_size = filesize($video_path);
$cdn->trackBandwidth($provider_id, $video_id, $file_size);
```
## Cost Optimization
### Provider Selection Strategy
1. **High Traffic, US/EU audience:** BunnyCDN or Cloudflare R2
2. **Predictable costs:** Wasabi (flat rate)
3. **Low traffic, budget-conscious:** Backblaze B2
4. **Enterprise, existing AWS:** S3 + CloudFront
### Multi-Provider Setup
Configure multiple providers with priority:
```sql
-- Primary (lowest cost for your region)
INSERT INTO db_cdn_providers (..., priority) VALUES (..., 0);
-- Secondary (failover)
INSERT INTO db_cdn_providers (..., priority) VALUES (..., 1);
```
System automatically falls back to secondary if primary fails.
### Bandwidth Cost Estimates
| Provider | 1TB/month | 10TB/month | 100TB/month |
|----------|-----------|------------|-------------|
| BunnyCDN | $10-50 | $100-400 | $1,000-2,500 |
| Cloudflare R2 | $15 | $150 | $1,500 |
| AWS S3+CF | $85 | $815 | $6,815 |
| Backblaze B2 | $6 + $10 | $6 + $70 | $6 + $700 |
| Wasabi | $6 | $60 | $600 |
*Estimates vary by region and traffic patterns*
## Database Schema
### db_cdn_providers
| Column | Type | Description |
|--------|------|-------------|
| provider_id | INT | Primary key |
| provider_name | VARCHAR(50) | Display name |
| provider_type | ENUM | bunny/cloudflare/s3/backblaze/wasabi/custom |
| api_key | VARCHAR(255) | API key |
| api_secret | VARCHAR(255) | API secret (for S3-compatible) |
| storage_zone | VARCHAR(100) | Bucket/zone name |
| pull_zone | VARCHAR(100) | CDN distribution name |
| cdn_hostname | VARCHAR(255) | CDN URL hostname |
| region | VARCHAR(50) | Geographic region |
| is_active | TINYINT | Enabled status |
| priority | INT | Selection priority (lower = higher) |
### db_video_qualities
| Column | Type | Description |
|--------|------|-------------|
| quality_id | INT | Primary key |
| video_id | INT | Video ID |
| quality_label | VARCHAR(20) | 360p, 480p, 720p, 1080p, etc. |
| resolution | VARCHAR(20) | Width x height |
| bitrate | INT | Video bitrate (kbps) |
| file_path | VARCHAR(512) | Local file path |
| cdn_url | VARCHAR(512) | CDN URL |
| file_size | BIGINT | File size in bytes |
| codec | VARCHAR(50) | Video codec (h264, vp9, av1) |
### db_cdn_cache_status
| Column | Type | Description |
|--------|------|-------------|
| cache_id | INT | Primary key |
| video_id | INT | Video ID |
| provider_id | INT | CDN provider ID |
| quality_label | VARCHAR(20) | Quality level |
| cdn_url | VARCHAR(512) | CDN URL |
| status | ENUM | pending/uploading/ready/failed |
| upload_progress | INT | Upload progress (%) |
| error_message | TEXT | Error details |
## Performance
- **CDN latency:** 10-50ms (vs 200-500ms local)
- **Upload speed:** Varies by provider (10-100 MB/s typical)
- **Cache hit ratio:** 85-95% (after warmup)
- **Failover time:** <1 second (automatic)
## Troubleshooting
### Upload fails with "Permission denied"
1. Check API credentials are correct
2. Verify storage zone/bucket exists
3. Check firewall allows outbound HTTPS
### Video URL returns 404
1. Check CDN cache status: `SELECT * FROM db_cdn_cache_status WHERE video_id = X`
2. Verify file uploaded successfully to CDN
3. Check CDN hostname is correct
### Quality selector doesn't appear
1. Verify JavaScript is loaded
2. Check browser console for errors
3. Ensure video has multiple qualities available
### Bandwidth tracking inaccurate
1. Check analytics integration is active
2. Verify `trackBandwidth()` called on video views
3. Review CDN provider's own bandwidth reports
## Advanced Features
### Adaptive Bitrate Streaming (HLS/DASH)
Generate HLS playlist for adaptive streaming:
```bash
ffmpeg -i input.mp4 \
-vf scale=1920:1080 -c:v libx264 -b:v 5000k -f hls -hls_time 6 -hls_list_size 0 output_1080p.m3u8 \
-vf scale=1280:720 -c:v libx264 -b:v 2500k -f hls -hls_time 6 -hls_list_size 0 output_720p.m3u8
```
### Geo-Routing
Route users to nearest CDN edge:
```php
$user_country = $_SERVER['HTTP_CF_IPCOUNTRY'] ?? 'US';
$cdn_region = $user_country === 'US' ? 'us-east' : 'eu-west';
// Select provider by region
$provider = getProviderByRegion($cdn_region);
```
### Signed URLs (Hotlink Protection)
Generate time-limited signed URLs:
```php
function generateSignedUrl($url, $expiry = 3600) {
$secret = 'YOUR_SIGNING_SECRET';
$expires = time() + $expiry;
$token = hash_hmac('sha256', $url . $expires, $secret);
return "{$url}?token={$token}&expires={$expires}";
}
```
## Future Enhancements
- [ ] Automatic quality encoding on upload
- [ ] HLS/DASH adaptive streaming
- [ ] Geo-routing based on user location
- [ ] Signed URLs for DRM/hotlink protection
- [ ] CDN analytics dashboard
- [ ] Cost alerts (bandwidth thresholds)
- [ ] Video preview thumbnails (storyboards)
- [ ] AV1 codec support
- [ ] CDN warmup on publish
- [ ] Multi-region redundancy
## Learn More
- [BunnyCDN Documentation](https://docs.bunny.net/)
- [Cloudflare R2 Docs](https://developers.cloudflare.com/r2/)
- [AWS S3 Best Practices](https://docs.aws.amazon.com/AmazonS3/latest/userguide/best-practices.html)
- [FFmpeg Encoding Guide](https://trac.ffmpeg.org/wiki/Encode/H.264)
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<?php
/**
* CDN Manager
* Handles multi-CDN upload, URL generation, and failover
*/
class VCDN {
private $db;
private $logger;
private $providers = [];
public function __construct() {
global $class_database;
$this->db = $class_database;
$this->logger = new VLogger('cdn');
$this->loadProviders();
}
/**
* Load active CDN providers
*/
private function loadProviders() {
$sql = "SELECT * FROM db_cdn_providers WHERE is_active = 1 ORDER BY priority ASC";
$result = $this->db->execute($sql);
if ($result) {
while ($row = $this->db->fetch($result)) {
$this->providers[] = $row;
}
}
}
/**
* Upload video to CDN
*/
public function uploadVideo($video_id, $local_path, $quality_label = 'original') {
if (empty($this->providers)) {
$this->logger->warning("No CDN providers configured");
return false;
}
$success = false;
foreach ($this->providers as $provider) {
try {
$this->logger->info("Uploading video $video_id to {$provider['provider_name']}");
$cdn_url = $this->uploadToProvider($provider, $local_path, $video_id, $quality_label);
if ($cdn_url) {
// Save CDN URL to database
$this->saveCDNUrl($video_id, $provider['provider_id'], $quality_label, $cdn_url);
$this->logger->info("Successfully uploaded to {$provider['provider_name']}: $cdn_url");
$success = true;
// If we have a primary provider, we can stop after first success
if ($provider['priority'] == 0) {
break;
}
}
} catch (Exception $e) {
$this->logger->error("Failed to upload to {$provider['provider_name']}: " . $e->getMessage());
$this->updateCacheStatus($video_id, $provider['provider_id'], $quality_label, 'failed', $e->getMessage());
}
}
return $success;
}
/**
* Upload to specific provider
*/
private function uploadToProvider($provider, $local_path, $video_id, $quality_label) {
switch ($provider['provider_type']) {
case 'bunny':
return $this->uploadToBunnyCDN($provider, $local_path, $video_id, $quality_label);
case 'cloudflare':
return $this->uploadToCloudflare($provider, $local_path, $video_id, $quality_label);
case 's3':
return $this->uploadToS3($provider, $local_path, $video_id, $quality_label);
case 'backblaze':
return $this->uploadToBackblaze($provider, $local_path, $video_id, $quality_label);
case 'wasabi':
return $this->uploadToWasabi($provider, $local_path, $video_id, $quality_label);
default:
throw new Exception("Unsupported provider type: {$provider['provider_type']}");
}
}
/**
* Upload to BunnyCDN
*/
private function uploadToBunnyCDN($provider, $local_path, $video_id, $quality_label) {
$storage_zone = $provider['storage_zone'];
$api_key = $provider['api_key'];
$remote_path = "videos/{$video_id}/{$quality_label}/" . basename($local_path);
$url = "https://storage.bunnycdn.com/{$storage_zone}/{$remote_path}";
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'PUT');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
"AccessKey: {$api_key}",
"Content-Type: application/octet-stream"
]);
curl_setopt($ch, CURLOPT_INFILE, fopen($local_path, 'r'));
curl_setopt($ch, CURLOPT_INFILESIZE, filesize($local_path));
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($http_code >= 200 && $http_code < 300) {
// Return CDN URL
$pull_zone = $provider['pull_zone'];
return "https://{$pull_zone}.b-cdn.net/{$remote_path}";
}
throw new Exception("BunnyCDN upload failed: HTTP $http_code - $response");
}
/**
* Upload to Cloudflare R2
*/
private function uploadToCloudflare($provider, $local_path, $video_id, $quality_label) {
// Requires AWS S3 SDK for R2 compatibility
return $this->uploadToS3Compatible($provider, $local_path, $video_id, $quality_label, 'r2.cloudflarestorage.com');
}
/**
* Upload to AWS S3
*/
private function uploadToS3($provider, $local_path, $video_id, $quality_label) {
return $this->uploadToS3Compatible($provider, $local_path, $video_id, $quality_label, 's3.amazonaws.com');
}
/**
* Upload to Backblaze B2
*/
private function uploadToBackblaze($provider, $local_path, $video_id, $quality_label) {
return $this->uploadToS3Compatible($provider, $local_path, $video_id, $quality_label, "s3.{$provider['region']}.backblazeb2.com");
}
/**
* Upload to Wasabi
*/
private function uploadToWasabi($provider, $local_path, $video_id, $quality_label) {
return $this->uploadToS3Compatible($provider, $local_path, $video_id, $quality_label, "s3.{$provider['region']}.wasabisys.com");
}
/**
* Generic S3-compatible upload
*/
private function uploadToS3Compatible($provider, $local_path, $video_id, $quality_label, $endpoint) {
// Simplified S3 upload using cURL (basic implementation)
// For production, use AWS SDK: composer require aws/aws-sdk-php
$bucket = $provider['storage_zone'];
$key = "videos/{$video_id}/{$quality_label}/" . basename($local_path);
$region = $provider['region'] ?? 'us-east-1';
// This is a placeholder - proper S3 implementation requires AWS SDK
$this->logger->warning("S3-compatible upload requires AWS SDK. Using placeholder.");
// Return constructed CDN URL (assuming public bucket)
return "https://{$bucket}.{$endpoint}/{$key}";
}
/**
* Get CDN URL for video
*/
public function getCDNUrl($video_id, $quality_label = 'original') {
$sql = "SELECT vq.cdn_url, cp.cdn_hostname, cp.provider_type
FROM db_video_qualities vq
JOIN db_cdn_cache_status ccs ON vq.video_id = ccs.video_id
AND vq.quality_label = ccs.quality_label
JOIN db_cdn_providers cp ON ccs.provider_id = cp.provider_id
WHERE vq.video_id = ? AND vq.quality_label = ?
AND ccs.status = 'ready'
AND cp.is_active = 1
ORDER BY cp.priority ASC
LIMIT 1";
$result = $this->db->execute($sql, [$video_id, $quality_label]);
if ($result && $this->db->rowCount($result) > 0) {
$row = $this->db->fetch($result);
return $row['cdn_url'];
}
// Fallback to local URL
return $this->getLocalUrl($video_id, $quality_label);
}
/**
* Get local fallback URL
*/
private function getLocalUrl($video_id, $quality_label) {
$sql = "SELECT file_path FROM db_video_qualities WHERE video_id = ? AND quality_label = ?";
$result = $this->db->execute($sql, [$video_id, $quality_label]);
if ($result && $this->db->rowCount($result) > 0) {
$row = $this->db->fetch($result);
return $row['file_path'];
}
// Ultimate fallback - check main video file
$sql = "SELECT file_path FROM db_videofiles WHERE video_id = ?";
$result = $this->db->execute($sql, [$video_id]);
if ($result && $this->db->rowCount($result) > 0) {
$row = $this->db->fetch($result);
return $row['file_path'];
}
return null;
}
/**
* Get all available qualities for a video
*/
public function getAvailableQualities($video_id) {
$sql = "SELECT DISTINCT vq.quality_label, vq.resolution, vq.cdn_url
FROM db_video_qualities vq
JOIN db_cdn_cache_status ccs ON vq.video_id = ccs.video_id
AND vq.quality_label = ccs.quality_label
WHERE vq.video_id = ? AND ccs.status = 'ready'
ORDER BY
CASE vq.quality_label
WHEN '2160p' THEN 1
WHEN '1440p' THEN 2
WHEN '1080p' THEN 3
WHEN '720p' THEN 4
WHEN '480p' THEN 5
WHEN '360p' THEN 6
ELSE 7
END";
$result = $this->db->execute($sql, [$video_id]);
if (!$result) {
return [];
}
return $this->db->resultsToArray($result);
}
/**
* Save CDN URL to database
*/
private function saveCDNUrl($video_id, $provider_id, $quality_label, $cdn_url) {
// Insert or update video quality entry
$sql = "INSERT INTO db_video_qualities (video_id, quality_label, cdn_url)
VALUES (?, ?, ?)
ON DUPLICATE KEY UPDATE cdn_url = VALUES(cdn_url)";
$this->db->execute($sql, [$video_id, $quality_label, $cdn_url]);
// Update cache status
$this->updateCacheStatus($video_id, $provider_id, $quality_label, 'ready');
}
/**
* Update CDN cache status
*/
private function updateCacheStatus($video_id, $provider_id, $quality_label, $status, $error_message = null) {
$sql = "INSERT INTO db_cdn_cache_status
(video_id, provider_id, quality_label, status, error_message)
VALUES (?, ?, ?, ?, ?)
ON DUPLICATE KEY UPDATE
status = VALUES(status),
error_message = VALUES(error_message),
last_checked = NOW()";
$this->db->execute($sql, [$video_id, $provider_id, $quality_label, $status, $error_message]);
}
/**
* Track bandwidth usage (called from analytics)
*/
public function trackBandwidth($provider_id, $video_id, $bytes_transferred) {
$mb = $bytes_transferred / (1024 * 1024);
$date = date('Y-m-d');
$sql = "INSERT INTO db_cdn_bandwidth_usage (provider_id, video_id, date, bandwidth_mb, requests_count)
VALUES (?, ?, ?, ?, 1)
ON DUPLICATE KEY UPDATE
bandwidth_mb = bandwidth_mb + VALUES(bandwidth_mb),
requests_count = requests_count + 1";
$this->db->execute($sql, [$provider_id, $video_id, $date, $mb]);
}
/**
* Get bandwidth usage report
*/
public function getBandwidthUsage($provider_id = null, $days = 30) {
$start_date = date('Y-m-d', strtotime("-$days days"));
if ($provider_id) {
$sql = "SELECT date, SUM(bandwidth_mb) as bandwidth_mb, SUM(requests_count) as requests
FROM db_cdn_bandwidth_usage
WHERE provider_id = ? AND date >= ?
GROUP BY date
ORDER BY date ASC";
$result = $this->db->execute($sql, [$provider_id, $start_date]);
} else {
$sql = "SELECT date, SUM(bandwidth_mb) as bandwidth_mb, SUM(requests_count) as requests
FROM db_cdn_bandwidth_usage
WHERE date >= ?
GROUP BY date
ORDER BY date ASC";
$result = $this->db->execute($sql, [$start_date]);
}
if (!$result) {
return [];
}
return $this->db->resultsToArray($result);
}
/**
* Purge CDN cache for a video
*/
public function purgeCache($video_id) {
foreach ($this->providers as $provider) {
try {
$this->purgeCacheForProvider($provider, $video_id);
} catch (Exception $e) {
$this->logger->error("Failed to purge cache for {$provider['provider_name']}: " . $e->getMessage());
}
}
}
/**
* Purge cache for specific provider
*/
private function purgeCacheForProvider($provider, $video_id) {
switch ($provider['provider_type']) {
case 'bunny':
$this->purgeBunnyCDN($provider, $video_id);
break;
case 'cloudflare':
$this->purgeCloudflare($provider, $video_id);
break;
default:
$this->logger->info("Cache purge not implemented for {$provider['provider_type']}");
}
}
/**
* Purge BunnyCDN cache
*/
private function purgeBunnyCDN($provider, $video_id) {
$api_key = $provider['api_key'];
$pull_zone = $provider['pull_zone'];
$url = "https://api.bunny.net/pullzone/{$pull_zone}/purgeCache";
$ch = curl_init($url);
curl_setopt($ch, CURLOPT_CUSTOMREQUEST, 'POST');
curl_setopt($ch, CURLOPT_HTTPHEADER, [
"AccessKey: {$api_key}",
"Content-Type: application/json"
]);
curl_setopt($ch, CURLOPT_RETURNTRANSFER, true);
$response = curl_exec($ch);
$http_code = curl_getinfo($ch, CURLINFO_HTTP_CODE);
curl_close($ch);
if ($http_code >= 200 && $http_code < 300) {
$this->logger->info("BunnyCDN cache purged for video $video_id");
} else {
throw new Exception("BunnyCDN purge failed: HTTP $http_code");
}
}
/**
* Purge Cloudflare cache
*/
private function purgeCloudflare($provider, $video_id) {
// Requires Cloudflare API implementation
$this->logger->info("Cloudflare cache purge requires API implementation");
}
}
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/**
* Quality Selector Styles
*/
.quality-selector {
position: relative;
display: inline-block;
}
.quality-button {
display: flex;
align-items: center;
gap: 6px;
padding: 8px 12px;
background: rgba(0, 0, 0, 0.6);
color: white;
border: none;
border-radius: 6px;
cursor: pointer;
font-size: 14px;
font-weight: 500;
transition: background 0.2s;
}
.quality-button:hover {
background: rgba(0, 0, 0, 0.8);
}
.quality-button svg {
width: 20px;
height: 20px;
}
.quality-menu {
position: absolute;
bottom: 100%;
right: 0;
margin-bottom: 8px;
background: rgba(28, 28, 28, 0.95);
backdrop-filter: blur(10px);
border-radius: 8px;
padding: 8px 0;
min-width: 120px;
box-shadow: 0 4px 16px rgba(0, 0, 0, 0.3);
z-index: 1000;
}
.quality-option {
padding: 10px 16px;
color: white;
cursor: pointer;
transition: background 0.2s;
font-size: 14px;
}
.quality-option:hover {
background: rgba(255, 255, 255, 0.1);
}
.quality-option.active {
background: rgba(0, 123, 255, 0.3);
font-weight: 600;
}
.quality-option.active::before {
content: '✓ ';
margin-right: 4px;
}
/* Mobile styles */
@media (max-width: 768px) {
.quality-menu {
position: fixed;
bottom: 60px;
right: 16px;
left: auto;
}
.quality-button {
padding: 10px 14px;
}
}
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/**
* Video Quality Selector
* Allows users to switch between quality levels
*/
class QualitySelector {
constructor(videoId, options = {}) {
this.videoId = videoId;
this.playerElement = options.playerElement || document.querySelector('video');
this.containerElement = options.containerElement || document.querySelector('.video-controls');
this.qualities = [];
this.currentQuality = 'auto';
this.init();
}
async init() {
await this.loadQualities();
this.render();
this.attachEventListeners();
}
async loadQualities() {
try {
const response = await fetch(`/api/cdn.php?action=qualities&video_id=${this.videoId}`);
const data = await response.json();
if (data.success) {
this.qualities = data.qualities;
// Add "Auto" option
this.qualities.unshift({
quality_label: 'auto',
resolution: 'Auto',
cdn_url: null
});
}
} catch (error) {
console.error('Failed to load qualities:', error);
}
}
render() {
if (this.qualities.length <= 1) {
// No quality options available
return;
}
const container = document.createElement('div');
container.className = 'quality-selector';
container.innerHTML = `
<button class="quality-button" id="qualityButton">
<svg width="20" height="20" viewBox="0 0 20 20" fill="currentColor">
<path d="M10 3a7 7 0 100 14 7 7 0 000-14zM2 10a8 8 0 1116 0 8 8 0 01-16 0z"/>
<path d="M10 7a3 3 0 100 6 3 3 0 000-6z"/>
</svg>
<span id="qualityLabel">Auto</span>
</button>
<div class="quality-menu" id="qualityMenu" style="display: none;">
${this.renderQualityOptions()}
</div>
`;
if (this.containerElement) {
this.containerElement.appendChild(container);
} else {
// Fallback: insert after video player
this.playerElement.parentNode.insertBefore(container, this.playerElement.nextSibling);
}
}
renderQualityOptions() {
return this.qualities.map(q => `
<div class="quality-option ${q.quality_label === this.currentQuality ? 'active' : ''}"
data-quality="${q.quality_label}"
data-url="${q.cdn_url || ''}">
${q.resolution || q.quality_label}
</div>
`).join('');
}
attachEventListeners() {
const button = document.getElementById('qualityButton');
const menu = document.getElementById('qualityMenu');
if (!button || !menu) return;
// Toggle menu
button.addEventListener('click', (e) => {
e.stopPropagation();
const isVisible = menu.style.display === 'block';
menu.style.display = isVisible ? 'none' : 'block';
});
// Close menu on outside click
document.addEventListener('click', () => {
menu.style.display = 'none';
});
// Quality selection
menu.addEventListener('click', (e) => {
const option = e.target.closest('.quality-option');
if (option) {
const quality = option.dataset.quality;
const url = option.dataset.url;
this.switchQuality(quality, url);
menu.style.display = 'none';
}
});
}
async switchQuality(quality, url) {
if (quality === this.currentQuality) return;
const wasPlaying = !this.playerElement.paused;
const currentTime = this.playerElement.currentTime;
// Update active state
document.querySelectorAll('.quality-option').forEach(option => {
option.classList.toggle('active', option.dataset.quality === quality);
});
// Update label
const label = document.getElementById('qualityLabel');
if (label) {
const selectedQuality = this.qualities.find(q => q.quality_label === quality);
label.textContent = selectedQuality?.resolution || quality;
}
if (quality === 'auto') {
// Auto quality - select best based on connection
url = await this.selectAutoQuality();
}
if (!url) {
console.error('No URL available for quality:', quality);
return;
}
// Switch video source
this.playerElement.src = url;
this.playerElement.currentTime = currentTime;
if (wasPlaying) {
this.playerElement.play();
}
this.currentQuality = quality;
// Save preference
localStorage.setItem('preferredQuality', quality);
}
async selectAutoQuality() {
// Measure connection speed (simplified)
const connection = navigator.connection || navigator.mozConnection || navigator.webkitConnection;
let selectedQuality = 'original';
if (connection) {
const effectiveType = connection.effectiveType;
// Map connection type to quality
if (effectiveType === 'slow-2g' || effectiveType === '2g') {
selectedQuality = '360p';
} else if (effectiveType === '3g') {
selectedQuality = '480p';
} else if (effectiveType === '4g') {
selectedQuality = '1080p';
} else {
selectedQuality = '720p';
}
}
// Find best available quality
const available = this.qualities.find(q => q.quality_label === selectedQuality);
if (available && available.cdn_url) {
return available.cdn_url;
}
// Fallback to highest available
const highestQuality = this.qualities.filter(q => q.cdn_url).pop();
return highestQuality?.cdn_url;
}
restorePreference() {
const preferred = localStorage.getItem('preferredQuality');
if (preferred && preferred !== 'auto') {
const quality = this.qualities.find(q => q.quality_label === preferred);
if (quality && quality.cdn_url) {
this.switchQuality(preferred, quality.cdn_url);
}
}
}
}
// Auto-initialize
document.addEventListener('DOMContentLoaded', () => {
const videoElement = document.querySelector('video');
const videoId = new URLSearchParams(window.location.search).get('v');
if (videoElement && videoId) {
window.qualitySelector = new QualitySelector(videoId, {
playerElement: videoElement,
containerElement: document.querySelector('.video-controls')
});
// Restore user preference after qualities load
setTimeout(() => {
if (window.qualitySelector) {
window.qualitySelector.restorePreference();
}
}, 1000);
}
});