KTV Synth Service Health Check

This service provides KTV/MTV video synthesis using FFmpeg.

Status: OK
Service: ktv-synth-service
Port: 9084
Queue: ktv_synth
Output Directory: /tmp/ktv-synth-outputs

Supported Operations:
- synthesize: Create KTV (dual-track) and MTV (single-track) videos

Features:
- Two-step FFmpeg synthesis
- ASS subtitle rendering
- Dual audio track support (accompaniment + original)
- Configurable video looping
- 1920x1080 output resolution