Timecode Without the Boxes: Small Crews Should Put the Master Clock in the Audio Kit
Timecode is now built into $329 mic kits, $449 recorders and iPhone docks. One-clock rig, jam order, LTC-on-audio and Resolve/Premiere sync steps.
Timecode used to mean a bag of sync boxes and a sound recordist who knew how to use them. In 2026 it is built into $329 wireless mic kits, $449 recorders and $300 phone docks. Our position: if you shoot any interview with two or more cameras, timecode now pays for itself on the first job, and the clock should live in the audio kit you were already going to bring.
What is built in now
- DJI Mic 3 (US launch 28 August 2025). The 2TX/1RX kit with charging case originally cost $329 and has since been discounted. According to DJI's spec sheet, the receiver takes LTC in on 3.5 mm TRS and sends LTC or audio-TC out on 3.5 mm and USB-C, rated at 0.5 ppm, "less than 1 frame within 24 hours". It records 32-bit float internally.
- Deity PR-4 ($449, shipping from mid-May 2026): a four-input, six-track 32-bit float recorder. Deity says it is "the first field recorder to natively transmit timecode wirelessly to timecode boxes and slates", with a range of about 10 m. That is the manufacturer's claim and we have not tested it.
- RODELink II, announced at NAB 2026: dual-channel UHF, 32-bit float onboard recording and a dedicated timecode I/O port. No price was announced at NAB, and we have not confirmed a price since.
- Blackmagic Camera ProDock ($299.95): BNC genlock and timecode in for iPhone 15 Pro to 17 Pro, with the Blackmagic Camera app or Final Cut Camera 2.0.
- Standalone boxes are still worth having for cameras with nothing else. Deity's TC-1 starts at $199 per unit, rated at 0.5 ppm, and is controlled over Bluetooth. Tentacle's Sync E MKII uses a TCXO that Tentacle rates at 0.2 ppm, with up to 50 hours of battery.
Why it pays on a two-camera interview
Waveform sync works until it doesn't: a camera with no scratch audio, a B-cam across a noisy room, a recording split into 4 GB chunks, a lav that dropped out. Every failure costs an assistant or an editor some minutes, and on a long interview day those minutes add up. With timecode, multicam sync is a single menu command. For the price of one ordinary day of assistant editing, you can usually cover the timecode gear for a typical two-camera kit. That is our own comparison, not a published figure, but in most markets the arithmetic is not close.
The rig: one master clock
The rule that prevents most problems: there is one master clock, and everything else is jammed from it. On a small crew that master should be the device that is on all day and that nobody switches off, usually the audio recorder or the mic receiver.
- Set the master to time-of-day, record run, at the project frame rate. Check the frame rate twice, because a 25/29.97 mismatch is the most common way to wreck a sync.
- Jam the cameras with timecode inputs first, directly from the master or from a box jammed from it.
- Jam the boxes or receivers for cameras without timecode inputs. Mount them, and send LTC into one audio channel of the camera.
- Jam the phones through a ProDock if you are using one.
- Re-jam at lunch. 0.5 ppm sounds tiny, but our arithmetic gives about 43 ms of possible drift over 24 hours, close to one frame at 25 fps. If the shoot runs long or the temperature changes a lot, jam again. It takes a minute.
Cameras without a timecode input
Most mirrorless bodies have no timecode input. The standard workaround is LTC on an audio channel: feed the box or receiver's output into the camera's mic input, and record the timecode as audio on one channel and scratch sound on the other. Three rules apply:
- Set the camera's audio level manually and turn off auto gain. LTC is a loud square-wave signal, and AGC can damage it.
- Label the channel on the slate or in the camera report, so nobody hears LTC at full volume in a client review.
- Accept that you lose one camera audio channel. With 32-bit float recording at the receiver or recorder, the camera's own audio is only scratch anyway.
The post procedure
DaVinci Resolve: select the clips in the Media Pool, right-click, choose Audio Sync > Update Timecode from Audio Track, and Resolve rewrites each clip's timecode from the LTC (as Digital Production's multicam guide describes). Then build the multicam clip with timecode as the sync method. Mute or disable the LTC channel in the multicam so nobody has to listen to it.
Premiere Pro: LTC support arrived in version 24.6. Either choose LTC under "Other Timecode" in the Create Multi-Camera Source Sequence dialog, or select the clips, go to Clip > Modify > Timecode and set Linear Timecode (LTC), then use Clip > Synchronize by timecode.
In both NLEs, do a five-second check before handing over: scrub to a hard transient such as a clap, a door or a plosive, and confirm that every angle lines up on the same frame. If one camera is a frame out, check its frame rate before you blame the clock.
The shopping rule
Before you buy a timecode box, check whether your mic receiver or recorder already sends timecode. If it does, you need one box or one dock for each camera that can't accept it, and nothing else. The bag of sync boxes is now one master clock in the audio kit, a few cables, and a jam at lunch.
