10/14/2026
TestGen AV Sync for iOS and tvOS
TestGen AV Sync turns an iPhone or iPad into a portable video and audio test-signal source, built on the same pattern generation engine Drastic ships in its Broadcast products
Point a camera at it, feed it into a capture card, hold it in frame for on set, or use it to line up a monitor. The signal is generated on the device in real time - no files, no streaming, no network.
WHAT IT DOES
â– 270 broadcast test patterns, including SMPTE and EBU color bars, PLUGE, luma and chroma ramps, multiburst, zone plates, convergence circles, grids, pixel-resolution charts, gamma strips, HDR clipping and filter charts, and much more.
â– Sample-accurate A/V sync markers - a phase-coded audio pulse aligned to the video frame, so you can measure lip-sync error end to end through any signal chain.
â– Frame accurate time code burn-in - HH:MM:SS:FF with drop-frame support, date stamp, or UTC.
â– QR frame data - every frame can carry its frame index, UTC timestamp, frame rate, pattern ID and audio phase as a machine-readable QR code, so an automated test rig can read the delay straight off a recording.
â– Flash cues - full screen or edge flashes at a chosen interval for latency and shutter testing.
â– Multi-pattern output - show up to five patterns at once in a split screen layout.
â– Frame rates from 24 to 60 fps, including 29.97 and 59.94 with correct drop-frame time code.
â– HDR output in HLG and PQ, plus Display P3 and Rec.2020 wide-gamut color on supported devices, with an optional 16-bit float rendering path for band-free gradients.
â– Presets - save a complete configuration and export it or import it as JSON to share a setup with the rest of the crew.
WHO IT IS FOR
TestGen AV Sync is designed for Camera operators, DITs, broadcast and post engineers, AV installers, live-event and streaming technicians, QC departments, and anyone who needs a known-good reference signal without carrying a rackmount generator.
FREE AND PRO
The FREE version generates SMPTE BT.709 75% and 100% color bars, SMPTE RP-219 bars, SMPTE 303M, a 7-step luma staircase, a grid-and-dots chart, a Rec.709 white window, a zone plate, plus full white and full black at up to 30 fps in Rec.709, with all three A/V sync audio signals and full preset support - enough to check a signal path or line up a monitor.
The PRO version is a single one-time in-app purchase - not a subscription - that unlocks the remaining 259 test patterns, multi-pattern layouts, time code/QR/flash overlays, 50/59.94/60 fps, HDR (HLG and PQ), and wide gamut output.
TestGenAVSync for iOS
https://apps.apple.com/us/app/testgenavsync/id6807481380
TestGenAVSync for tvOS
https://apps.apple.com/us/app/testgenavsync/id6807481380?platform=tv
https://www.drastic.tv/productsmenu-56/videoiosoftwarelist/testpatterngenerator
