Video Super Resolution

gst-ai-superresolution uses an AI model to perform super-resolution reconstruction on low-resolution video, generating high-resolution output frames.

Uses the QuickSRNet Small model (~42 KB), suitable for real-time inference.

Prerequisites

• Completed QIM SDK Installation and Model Download

Steps

1. Verify Model

radxa@airbox$

ls -l /etc/models/quicksrnetsmall_quantized.tflite

Super resolution does not require a label file.

2. View Configuration

radxa@airbox$

cat /etc/configs/config-superresolution.json

Key fields:

Field	Default	Description
input-file-path	/etc/media/video.mp4	Input video path

Note: The super resolution config uses input-file-path (not file-path).

3. Run

radxa@airbox$

gst-ai-superresolution --config-file=/etc/configs/config-superresolution.json

Press Ctrl + C to stop.

Expected Output

Terminal output:

Running app with model: /etc/models/quicksrnetsmall_quantized.tflite
VERBOSE: Replacing 10 out of 13 node(s) with delegate (TfLiteQnnDelegate) node, yielding 3 partitions for the whole graph.
Pipeline state changed from PAUSED to PLAYING

The display shows the super-resolved video output with clearer details compared to the original input.

Validation

• Replacing 10 out of 13 node(s): 10 operators delegated to DSP, 3 fall back to CPU
• Pipeline reaches PLAYING state
• Display shows super-resolved video

Some operators (Reshape, Transpose) are not supported on DSP and automatically fall back to CPU. This does not affect overall functionality.

How It Works

QuickSRNet is an ultra-lightweight super-resolution network designed for mobile and embedded devices. Pipeline flow:

filesrc → qtdemux → h264parse → v4l2h264dec
                                       ↓
                               qtimlvconverter
                                       ↓
                          qtimltflite (DSP + CPU)
                                       ↓
                                qtivcomposer
                                       ↓
                                 waylandsink