Sony FX3, FX30 and FX2 timecode from a DJI Mic 3 or Rode Wireless PRO: what locks and what doesn't

Sony's help guides describe external timecode lock on the FX3 (system software 2.0 or later), FX3A, FX30, FX2, A7S III, A1, A1 II and A9 III, all through the VMC-BNCM1 adapter on the Multi/Micro USB port. The FX5 takes timecode on USB-C with its own cable, the VMC-BNCU1. Rode publishes a step-by-step setup for the Wireless PRO into an FX3 or FX30. DJI documents the Mic 3's timecode output only with its own Osmo cameras, so a Mic 3 locking an FX3 over BNC should work on paper, but we couldn't find a published test.

The A7 IV, A7 V and A7R V aren't on that list, and Sony doesn't cover them in its documentation for the cable. You can still sync those bodies with audio timecode: the receiver puts the timecode signal on one channel of the camera's mic input and Resolve reads it later. That costs you one audio channel and ties the sync step to Resolve.

Which Sony cameras accept timecode in?

Sony's "Matching the time code with other devices" page appears in the help guide for each of these bodies. The procedure is the same on all of them: TC/UB menu, Time Code Make on Preset, Time Code Run on Free Run, then plug in the cable.

Once the lock has held for about ten seconds it survives unplugging, so you can jam the camera and pull the cable. Changing Time Code Make, Time Code Run or the preset releases it, and so does switching to S&Q. Sony also warns that footage can sit one frame off the reference and that the gap can grow over a long day. The B&H listing for the VMC-BNCM1 names the FX3, FX30, FX2, A1, A1 II, A9 III and A7S III; a B&H staff answer to an A7R V owner said the cable hadn't been enabled for that body.

Metadata timecode or audio timecode?

If your camera supports the lock, use it: you keep both audio channels and you can sync in Premiere or Final Cut as well as Resolve. Audio timecode is the fallback for bodies without a port, or for the day you leave the BNC adapter at home.

How do you lock an FX3 to a Rode Wireless PRO?

Rode's guide for the FX3 and FX30 runs like this. In RØDE Central, turn timecode on, pick the frame rate and select Timecode Mode 5, which sends only timecode on both channels of the 3.5 mm and USB outputs. Set the receiver's output gain to 0 dB, because Rode says some cameras only detect a loud signal. Put the camera on the same frame rate, set TC/UB to Preset and Free Run, then connect the receiver through a 3.5 mm to BNC adapter and the VMC-BNCM1. The camera's counter jumps to the Wireless PRO's time.

Mode 5 sends a loud SMPTE signal, and Rode warns you not to put headphones on that output. The transmitters keep free-running if the receiver drops out, and resync when they find it again. For a multi-camera day, Rode suggests jamming each camera about every four hours, or after every power cycle.

Can a DJI Mic 3 do the same?

The Mic 3 receiver has the right outputs. DJI's spec sheet lists LTC output on the 3.5 mm TRS and USB-C ports, and LTC input up to +6 dBu on the host receiver. The FAQ explains the receiver's port modes: L-OUT for LTC, A-OUT for audio timecode, L-IN to take timecode from another generator. The only camera setup DJI walks through is L-OUT into an Osmo Pocket 3 or Osmo Action 5 Pro over the USB-C phone adapter.

On paper, Mic 3 L-OUT into a 3.5 mm to BNC adapter and the VMC-BNCM1 is the same chain Rode uses. The open question is level. DJI's output is 0.5 Vp-p, Sony's help guides don't state what the Multi port needs, and Rode had to tell its users to push gain because some cameras ignore a quiet signal. We couldn't find a user report either way. If you own both, test the jam at home and look for "EXT-LK" before you build a shoot around it.

Don't count on the DJI Mic Series Camera Adapter for timecode either. DJI says it carries 48 kHz/24-bit digital audio into Sony's MI shoe and powers the receiver; the FAQ says nothing about timecode through the shoe. The adapter adds €29 to the kit price in DJI's EU store.

Does it lock if you shoot 50p?

Nobody has documented it. Sony says the reference timecode's frequency has to match the camera's frame frequency, or the camera can't lock and won't behave normally. Rode's list stops at 30 fps and tells you to pick the rate that divides into your project rate, which means 25 for 50p. Neither Sony nor Rode says whether an FX3 at 50p accepts a 25 fps reference. The Mic 3 offers 50F and 60F directly, so on paper it avoids the question. If you deliver at 50p, run the test with the exact settings you'll use on the job.

How do you sync audio timecode in the edit?

Feed the receiver into the mic input with A-OUT (DJI) or Mode 1 (Rode). DJI's FAQ says the steady hum on the left channel is the timecode. Rode puts it on the right and sums both transmitters on the left, so check which side you're monitoring. Your clean sound comes from the transmitters' internal recordings anyway, 32-bit float on both systems, with timecode written into the files.

In Resolve, select the clips in the Media Pool, right-click and choose Update Timecode from Audio Track, then line them up with Auto Align Clips based on timecode. Rode's guide says Premiere and Final Cut can't turn audio timecode into clip timecode, so Rode itself suggests syncing in Resolve and moving the timeline across.

What does each setup cost?

Which setup fits your shoot?

Pros and cons

Our view: if you own an FX3 or FX30 and want timecode now with the least guesswork, the Wireless PRO is the documented route. If you already have a Mic 3, buy the VMC-BNCM1 from a shop that takes returns, test L-OUT at home, and fall back to A-OUT and Resolve if the camera won't lock. For the Mic 3's recording formats and what reaches the camera, see our DJI Mic 3 32-bit float guide. FX5 owners waiting on stock can check our FX5 shipping update, and A6700 or ZV-E10 II users running a second camera from a tablet will find the app details in our Monitor & Control guide.

Questions people ask

Sources

• Sony help guides, "Matching the time code with other devices": FX3, FX3A, FX30, FX2, A7S III, A1, A1 II, A9 III; FX5 "Synchronizing Timecode with an External Device"
• Rode, Using Timecode on the Sony FX3 and FX30 With Wireless PRO and Wireless PRO user guide: Timecode (modes, frame rates, re-jam interval, editing software)
• DJI, DJI Mic 3 specs and FAQ (timecode modes, frame rates, drift, camera adapter); EU prices from the DJI Store
• B&H, Sony VMC-BNCM1 listing and Q&A; Newsshooter, How timecode sync works with the Sony FX3 (firmware 2.00, launch price)
• Prices: aio.lv, ProAV, Musikhaus Korn, Materiel.net via comparateur-gamer, John Lewis, Newsshooter on Rode's 2025 price cut, Adorama
• Cover: DJI, from the DJI Mic 3 product page, graded by 4FILMMAKERS. Diagram: 4FILMMAKERS