LTC Detective M vs SRT Multiviewer

LTC Detective reads SMPTE linear timecode (SMPTE ST 12-1) from any audio input on your iPhone or iPad and displays the decoded timecode alongside detailed signal quality measurements. Most LTC readers show you the timecode and stop there. LTC Detective also shows you what the signal itself is doing. WHAT IT READS — SMPTE LTC at 23.976, 24, 25, 29.97 drop-frame, 29.97 non-drop, and 30 fps — Drop frame flag, color frame flag, BGF0/BGF1/BGF2 user bit flags — User bits (8 hex characters) — Forward and reverse playback, with playback speed measured against the audio sample clock WHAT IT MEASURES — Peak level (dBFS) — RMS level (dBFS) — DC offset — Jitter (RMS, in microseconds) — Frame error rate — Edge quality — Sync word validity — Bit rate — Parity check These are the measurements you need to diagnose a marginal LTC feed: a tape head that needs cleaning, a cable run picking up induced noise, a sample-rate mismatch causing drift, an AC-coupled output adding DC offset, a generator drifting against house sync. WHAT IT SHOWS — Live waveform of the LTC signal (240 ms scrolling window) — Input level meter with -60 to 0 dBFS scale — Locked / no-signal / drifting / frozen status — Capture timestamp, dropout count, uptime — Time since last valid LTC frame INPUTS — Built-in iPhone microphone — Any USB-C or Lightning audio interface that's class-compliant with iOS — Loopback input for testing with the built-in reference LTC generator The reference LTC generator plays a clean test signal out of the selected output channel so you can verify your input chain is working before you go to set. NO ACCOUNTS, NO TELEMETRY, NO ADS The app does not collect data, does not phone home, and works fully offline. There is no account to create. There is nothing to sign in to. PLATFORM — Requires iOS 17 or later — Built with native AVAudioEngine and the Accelerate framework for sub-microsecond timing accuracy — LTC decoding via libltc (LGPL, dynamically linked; license notice in the About screen) This is version 1.0. Coming in future updates: capture logs, exportable measurement data, and an iPad landscape layout.

$39.99 once. No subscription. Ever. SRT Multiview shows you every SRT feed at once, tells you which one is unhealthy, and explains what the numbers mean while you work. Pay once, own it, monitor your feeds. TEACHES THE PROTOCOL AS YOU WORK Every metric the app shows — RTT, packet loss, jitter, reconnect state — has a one-tap explanation: what it is, what good and bad look like, and the one lever that moves it. When a stream goes unhealthy, the diagnostic tells you what the app already tried and what is left for you to try — including when the bottleneck is your network and nothing in the app will fix it. SRT reject reasons appear with a plain-language translation, not just a code. WHAT IT DOES — Plays SRT streams in a live multi-view grid, up to 16 tiles on iPad (4×4) and up to 9 on iPhone (3×3). One AVPlayer per tile, one socket per tile. No time-slicing, no silent decoder pauses. — Import and export your stream library as JSON presets — from a file or a QR code. A tech lead provisions a preset; the crew scans it on arrival; the grid is live in seconds. Your setups move between devices. — Exposes the full per-stream SRT control set under an Advanced drawer — latency, oheadbw, maxbw, passphrase, caller/listener/rendezvous mode — without forcing first-run users to configure anything. — Auto-reconnects per tile with exponential backoff when a feed drops, without disturbing the other tiles. — Shows per-stream health as colored tile chrome (green / amber / red) keyed to RTT and packet loss. The "which one is unhealthy" question gets answered in under a second. — Runs a capacity probe before lighting up a heavy grid. Tells you the iPad can drive six 1080p tiles before you commit to eight. WHO IT'S FOR Broadcast engineers running cellular contribution from the field. Livestream operators monitoring 4+ feeds during a multi-cam event. AV technicians staging IP video. Sports and event camera ops. IPTV power users with their own URLs who want a clean, ad-free player. LITE (FREE) vs PRO ($39.99) Lite: single-stream SRT plus 1×2 multi-view at 1080p, basic stats, JSON preset import, no ads, no account, no time limit. Pro: 2×2, 3×3, and 4×4 grids; full per-stream SRT tuning; stats export; preset export; keyboard shortcuts; PiP on iPhone; Family Sharing. Pro unlocks once. No subscription renewal. No "Pro Plus" upsell. BUILT FOR THE FIELD Industry research puts cellular contribution at 54% of broadcasters in 2026, up from 46% the year before. The SRT feed originating from a phone is no longer the exception. SRT Multiview is built for that workflow: VideoToolbox hardware decode per tile, low-latency configuration, and a reconnect state machine that survives the elevator and the tunnel. PORTABLE PRESETS Import and export your stream library as JSON presets. One preset file moves your setups between the devices you carry — provision once, run anywhere. PRIVACY No accounts. No analytics SDK collecting personal data. No ads. Stream URLs and passphrases stay on the device, in app-private storage. The only network connections the app initiates are the SRT sessions you configure. Built by a working developer who ships a craft release every quarter.