Medium severity
IPTV Audio Sync Issues — How to Fix
Audio-video sync drift in IPTV is usually a buffer or codec issue. Specific fix for TiviMate, Smarters, and Smart IPTV.
Symptoms
- Lips don't match audio
- Sync drifts during stream
- Channel change resets sync but drifts again
Likely Causes
- Buffer underrun forcing video skip
- Hardware decoder lagging
- Provider's stream encoding issue
- TV processing delay (game mode off)
Step-by-Step Fixes
- Enable Game Mode on TV
Disables TV processing, reduces input lag. Settings > Picture > Game Mode: ON.
- Switch player engine in app
TiviMate: try External player (VLC). Different engines handle sync differently.
- Increase buffer size
Larger buffer prevents underruns that cause sync drift.
- Audio delay adjustment
Some apps allow manual audio sync (e.g., +200ms). Useful for problem channels.