# N5105 Synology 7.2 Docker Jellyfin: Install, Config & HW Decode
## 📝 Overview
This video provides a comprehensive technical tutorial on installing and configuring Jellyfin media server via Docker on a Synology NAS with N5105 CPU running DSM 7.2 system. The guide covers complete workflow including environment setup, image deployment, container configuration, common issue troubleshooting, and performance benchmarking with hardware acceleration enabled.
## 🔧 Main Content
### 1. **Preparation Phase**
- Download required Docker images (shared via Baidu Netdisk):
- 263MB: GPU monitoring utility image
- 498MB: Jellyfin application image (extracts to 710MB and 1.18GB)
- Create necessary folder structure:
- `Docker` folder on M.2 storage pool
- `Etemper` folder on HDD storage pool
- Subdirectories: `/Docker/e_image` (images), `/Docker/jellyfin_ny/cache`, `/Docker/jellyfin_ny/configure`, `/Etemper/movie` (test videos)
### 2. **System Configuration & Docker Installation**
- Modify default installation location in Synology Package Manager to M.2 pool
- Install Container Manager (Docker's new name in DSM 7.2)
- Verify GPU loading status via SSH with administrator privileges
### 3. **Jellyfin Container Deployment**
- Import two Docker images (TensorFlow and GPU monitoring tool)
- Configure Jellyfin container:
- Port mapping: 8096 (customizable for external access)
- Volume mounts: cache, configure, movie directories
- Enable privileged mode and auto-start
- **Critical Note**: Restart Docker service after first image import to ensure proper functionality
### 4. **Jellyfin Initial Setup**
- Create administrator account with password
- Set up media library (Movie type)
- Configure language (Chinese) and region (China)
- **Key Issue Resolution**: Fix media library scanning freeze
- Root cause: Network access issues with default metadata source (The Movie DB)
- Solution: Deselect The Movie DB in library settings, adjust metadata download priority
- Manually trigger library rescan
### 5. **Hardware Acceleration Configuration (Core Feature)**
Enable hardware decoding in Playback settings:
- ✅ Enable Intel Quick Sync
- ✅ Select all codec formats (except AV1)
- ✅ Enable HEVC format support
- ✅ Enable HDR-related options (Bt.2390)
- ✅ Check all three advanced options at bottom
- ❌ Disable VVB and AV1
### 6. **Performance Benchmark Comparison**
**Software Decoding (Hardware Acceleration Disabled):**
- CPU utilization: Nearly 100%
- Playback experience: Severe stuttering, extremely slow seeking
- Transcoding speed: Very sluggish
**Hardware Decoding (Quick Sync Enabled):**
- CPU utilization: 23-26% (approximately 75% reduction)
- GPU utilization: 70-99% (fully leveraging hardware acceleration)
- Playback experience: Smooth, supports real-time transcoding (e.g., 4K to 720p)
- Transcoding efficiency: Dramatically improved
## 💡 Technical Highlights & Considerations
1. **Cross-platform File Size Variance**: macOS archive sizes slightly larger than Windows versions (normal behavior)
2. **Media File Naming Convention**: Recommend "Title + Year" format for movies, supports Chinese/English
3. **First Scan Issue**: If library scan freezes, adjust metadata source settings and rescan
4. **GPU Monitoring**: Use dedicated Docker image to monitor real-time GPU usage
5. **Port Security Recommendation**: Change default port 8096 for external access, configure with router port forwarding
## 🎯 Use Cases
- Synology NAS users with N5105 processor
- Devices running DSM 7.2 system
- Users building private media servers
- Scenarios requiring 4K video hardware transcoding
- Home multi-device streaming media needs
## 📊 SEO Keywords
Synology NAS, Jellyfin installation, Docker container, N5105 hardware acceleration, DSM 7.2, Intel Quick Sync, media server setup, hardware decoding configuration, 4K transcoding, NAS video management, Container Manager, private streaming server, home media center, GPU transcoding, Jellyfin tutorial
---
## Technical Architecture
```
┌─────────────────────────────────────────┐
│ Synology NAS (DSM 7.2) │
│ ├─ CPU: Intel N5105 │
│ └─ GPU: Intel UHD Graphics (Quick Sync)│
└─────────────────────────────────────────┘
│
┌───────────┴───────────┐
│ │
┌────▼────┐ ┌──────▼──────┐
│ M.2 SSD │ │ HDD Pool │
│ Docker/ │ │ Etemper/ │
│ Images │ │ Movies │
└────┬────┘ └──────┬──────┘
│ │
└───────────┬───────────┘
│
┌───────────▼───────────┐
│ Container Manager │
│ ├─ Jellyfin Container│
│ └─ GPU Monitor │
└───────────┬───────────┘
│
┌───────────▼───────────┐
│ Hardware Acceleration│
│ Intel Quick Sync │
│ GPU: 70-99% Usage │
│ CPU: 23-26% Usage │
└───────────────────────┘
```