Get Started
Upload Your First File
- 1.Drag & Drop - Simply drag your capture file anywhere on the page
- 2.Or Click Upload - Click the upload area to browse for files
- 3.Wait for Processing - A progress circle will appear while the file is being analyzed. Wait until processing completes before exploring the results.
Supported File Types
| Format | Description |
|---|---|
| .alp | Raw ALP stream files |
| .pcap | STLTP or network multicast captures |
The inspector automatically detects the format - no configuration needed.
Navigating the Interface
After uploading, you'll see a tabbed interface with your analysis results:
Overview Tab
Your starting point. Shows:
- Summary cards - Total packets, data processed, services found
- Protocol stack diagram - Visual map of the broadcast architecture
- Multicast destinations - All IP flows in the capture
- Bandwidth distribution - Which services use the most data
Services Tab
Lists all broadcast services discovered:
- Service name and channel number
- Delivery protocol (ROUTE or MMTP)
- Health indicators (green = OK, yellow = warning, red = error)
- DRM protection status
Tip: Click a service card to see its SLS signaling files.
ALP Tab
Deep dive into link-layer statistics:
- Packet type breakdown (IPv4, LLS, MPEG-2 TS)
- Packet composition (simple, segmented, concatenated)
- Stream health score
- Payload size distribution
Physical Layer Tab
Available for STLTP PCAP files only
Shows transmission parameters:
- PLP (Physical Layer Pipe) statistics
- L1 signaling (FFT size, guard interval, modulation)
- Spectral efficiency charts
- Estimated capacity per PLP
ROUTE/SLS Tab
Transport session details:
- TSI/TOI tracking per service
- Codec information (resolution, bitrate, frame rate)
- AL-FEC status
- Session filtering by type (video, audio, SLS, app)
Tip: Click the expand arrow on app sessions to see extracted files.
Media Tab
Preview and download extracted media:
- Video player with playback controls
- Audio player
- Thumbnail previews
- Download buttons for offline playback
Using the File Browser
The left sidebar shows all extracted files organized by service:
📁 lls_tables/
📄 SLT_v1.xml
📄 SystemTime_v1.xml
📁 service_5001/
📁 sls/
📄 USBD.xml
📄 MPD.xml
📁 media/
📁 video0/
📁 audio0/- Click a folder to expand/collapse
- Click a file to view its contents
- XML files display with syntax highlighting
- Media files open in the Media tab
Understanding Status Indicators
Service Health
| Status | Meaning |
|---|---|
| 🟢 OK | Service has complete signaling and media |
| 🟡 Warning | DRM protected or missing some components |
| 🔴 Error | Missing critical SLS signaling |
| 🔒 DRM | Content is encrypted |
| ESG | Electronic Service Guide (program data) |
Stream Health Score
The ALP tab shows a health score from 0-100:
- 90-100 - Excellent, no issues
- 70-89 - Minor issues detected
- Below 70 - Significant problems found
Quick Tips
Viewing LLS Tables
- 1. Go to Overview tab
- 2. Expand the file browser on the left
- 3. Click any file in lls_tables/ folder
- 4. The XML viewer appears with formatted content
Playing Extracted Video
- 1. Go to Media tab
- 2. Click a video thumbnail on the left
- 3. Use the built-in player to preview
- 4. Click Download if your browser doesn't support HEVC
Filtering ROUTE Sessions
- 1. Go to ROUTE/SLS tab
- 2. Use the filter buttons: All | video | audio | SLS | app
- 3. Click Collapse All to minimize service groups
Checking Physical Layer (STLTP only)
- 1. Go to Physical Layer tab
- 2. Review the summary banner (PLPs, FFT, bandwidth)
- 3. Scroll down for detailed L1 signaling
- 4. Check the visualizations for spectral efficiency
Common Questions
Why is "Physical Layer" empty?
This tab only shows data for STLTP PCAP captures. Raw ALP files don't contain physical layer information.
Why can't I play the video?
- • HEVC/H.265 is not supported in all browsers
- • Try downloading the file and playing in VLC
- • DRM-protected content cannot be played without decryption keys
What does "DRM Protected" mean?
The content is encrypted. You can see the metadata and signaling, but media playback requires license server keys.
Why are some services marked as "No SLS"?
The capture may be incomplete or the service wasn't actively broadcasting during the capture window.