Problem
Power loss during a live broadcast corrupts the local recording even though the platform stream remains available.
Solution
Root Cause / Diagnostic:
Sudden mains power disruption abruptly shuts down storage controller write caches and PCIe bridges, truncating open video streams and corrupting operating system file tables. Even if cloud RTMP servers maintain the live YouTube stream for a few seconds, the unbuffered local master recording file is rendered unreadable or missing its final minutes.
Actionable Fix:
1. Connect Broadcast Rig to Online Double-Conversion UPS: Install a true online double-conversion uninterruptible power supply (minimum 1500VA / 900W, such as APC Smart-UPS or CyberPower) to provide continuous, zero-millisecond transfer battery backup.
2. Configure Automated Safe-Shutdown Software via USB Signaling: Connect the UPS USB data cable to the workstation and configure PowerChute or NUT (Network UPS Tools) to trigger an automated OBS "Stop Recording" command via WebSocket before battery depletion reaches 20%.
3. Enforce Fault-Tolerant Recording Containers (MKV / Fragmented MP4): Ensure OBS records exclusively to Matroska (.mkv) or Fragmented MP4 (.mp4), which do not rely on header finalization and survive catastrophic power cuts with zero lost data prior to the power-off frame.
Pro Tip:
Split your studio power distribution into dual protected circuits: Route cameras, lighting, and audio mixers through the UPS along with the encoder PC; a 1500VA UPS gives you 15 to 20 minutes of full operational run time during a total studio blackout, allowing you to gracefully conclude the broadcast or transition to a generator.
Sudden mains power disruption abruptly shuts down storage controller write caches and PCIe bridges, truncating open video streams and corrupting operating system file tables. Even if cloud RTMP servers maintain the live YouTube stream for a few seconds, the unbuffered local master recording file is rendered unreadable or missing its final minutes.
Actionable Fix:
1. Connect Broadcast Rig to Online Double-Conversion UPS: Install a true online double-conversion uninterruptible power supply (minimum 1500VA / 900W, such as APC Smart-UPS or CyberPower) to provide continuous, zero-millisecond transfer battery backup.
2. Configure Automated Safe-Shutdown Software via USB Signaling: Connect the UPS USB data cable to the workstation and configure PowerChute or NUT (Network UPS Tools) to trigger an automated OBS "Stop Recording" command via WebSocket before battery depletion reaches 20%.
3. Enforce Fault-Tolerant Recording Containers (MKV / Fragmented MP4): Ensure OBS records exclusively to Matroska (.mkv) or Fragmented MP4 (.mp4), which do not rely on header finalization and survive catastrophic power cuts with zero lost data prior to the power-off frame.
Pro Tip:
Split your studio power distribution into dual protected circuits: Route cameras, lighting, and audio mixers through the UPS along with the encoder PC; a 1500VA UPS gives you 15 to 20 minutes of full operational run time during a total studio blackout, allowing you to gracefully conclude the broadcast or transition to a generator.