File Format

Each file runs for 60 seconds with a 10-second lead-in and title page. This gives Sync-One2 time to calibrate to your environment without you having to pause playback and ensures your system settles into stable operation.

Beep Patterns

Most files are available in two styles:

• Regular beeps: One beep every second – useful for general sync testing
• Variable rate beeps: A decreasing number of frames between beeps in a repeating pattern – better for checking system jitter and stability

Power Management Workaround

Some equipment employs aggressive power management, which causes issues during the complete silence between beeps because PCM zero values confuse the device. To prevent this, several files include low-level pink noise at -40 dB – just enough to keep power management happy without affecting measurements.

Custom Files

Need a test file we don’t provide? Just contact us with your Sync-One2 serial number (or support code for v2 users), and we’ll look at creating one for you.

Usage Rights

These AV sync test files were created specifically for Sync-One2, though they’re useful in other situations too. The files are publicly and freely available, but they are copyrighted – please credit the source if you use them.

Important Warnings

Don’t upload these files to YouTube; their backend video processing will generally manipulate the sync timing, making the files useless for measurement.