Cards Full With 90 Minutes of Daylight Left
A 1st AC calls "cards full" 40 minutes into a location sequence. The spare case is in a van 20 minutes away, the lead actor is ready, and the west-facing room loses direct sun in 90 minutes. Nobody can say which recorded card has two verified copies.
The delay is expensive, but panic is more dangerous. Formatting the wrong card can erase the only copy of the morning's work. Sending a PA for "a CFexpress card" can return the wrong physical type. Restarting without a media log can also break roll tracking and sound sync.
This post gives the AD, camera team, and data manager a recovery order that protects footage first, then salvages the shooting day.
The protocol follows verified-copy practices documented by Pomfort and current manufacturer media specifications. Sony confirms that the FX6 has two CFexpress Type A/SD combination slots with relay recording, while ARRI uses 1TB and 2TB Codex Compact Drives and RED V-RAPTOR uses CFexpress Type B. Verify behavior in the manual for the exact camera and firmware on set.
What the Full-Card Warning Actually Means
A full card ends recording to that medium. What happens next depends on the recording mode configured before the take.
On a Sony FX6, relay recording can move recording from one slot to the other when the active card fills. Simultaneous recording writes the same material to both slots, so it provides redundancy but no extra duration. Those modes solve different problems. A crew that assumes dual slots always double runtime may discover that both cards became full together.
The recovery calculation starts with data rate:
recording minutes = card capacity in bits ÷ data rate in bits per second ÷ 60
Sony lists XAVC-I QFHD 23.98p at a maximum 240 Mbps. A nominal 160 GB card therefore holds about 88.9 minutes before filesystem overhead and variable-rate behavior:
160 × 8,000 ÷ 240 ÷ 60 = 88.9 minutes.
Two 160 GB cards in relay provide about 178 minutes. The same two cards in simultaneous mode provide about 89 minutes with a second in-camera copy. A documentary expecting 210 recorded minutes is short by at least 32 minutes before allowing an operational buffer. Run the codec through the Data Rate Calculator and Film Production Storage Calculator before setting the card count.
When media fills, footage already written should remain present, but it is not ready to erase merely because a drag-and-drop copy finishes. A safe reuse decision requires verified copies, correct roll naming, a camera report update, and explicit release from the person responsible for data.
Three Recovery Scenarios
1. FX6 Documentary With Relay Recording
A solo operator records XAVC-I 4K 23.98p to two 160 GB CFexpress Type A cards on a Sony FX6. Slot A fills after roughly 86 usable minutes and relay recording moves to Slot B. The operator announces the rollover, finishes the current sequence, then hands Card A to the data wrangler. Card A receives checksum-verified copies on two separate SSDs before lunch. The wrangler releases it, the operator reformats it in-camera, and the production continues without stopping the march coverage.
2. BMPCC 6K Narrative With External Media Available
A 6-day feature records Blackmagic RAW to 256 GB CFast 2.0 cards on a Blackmagic Pocket Cinema Camera 6K. Two cards fill earlier than planned during a high-ratio stunt morning. The camera has a tested 1TB USB-C SSD and mounting hardware in the media kit. During a lighting reset, the 1st AC switches to the approved external disk, records a camera test, and updates the roll prefix. The CFast cards remain write-protected until two verified offloads exist. No retail trip or untested card enters the workflow.
3. V-RAPTOR Commercial With One Usable Card
A commercial team records REDCODE RAW to one 660 GB high-endurance CFexpress Type B card on a RED V-RAPTOR. The spare fails its camera test at call, but production continues without reducing the shooting plan. The card fills before the exterior hero shot. A verified two-destination offload takes 38 minutes, and no compatible replacement is available nearby. The AD moves a product insert indoors, but the sun drops before the exterior setup. The crew protects the footage yet loses the shot because the media shortage was accepted at call time.
Recovery Paths Compared
The safest path depends on media already present, copy infrastructure, compatibility, and the remaining light or talent window.
| Recovery Path | Typical Delay | Footage Risk | Required Condition | Best Use |
|---|---|---|---|---|
| Continue on relay slot | 0 to 2 min | Low | Relay enabled and second card has capacity | Finish an active sequence |
| Retrieve tested spare media | 10 to 40 min | Low | Correct media waiting nearby | Crewed narrative or commercial |
| Verified offload, then in-camera format | 20 to 90+ min | Low after verification | Reader, two destinations, checksum software | Controlled reset or lunch |
| Switch to approved external recording | 5 to 15 min | Low after camera test | Camera support, cable, mount, approved drive | Blackmagic and supported workflows |
| Buy media locally | 30 to 120+ min | Medium until tested | Exact type, speed, capacity, and approval available | Last resort in a major market |
| Delete clips to create space | Unpredictable | Unacceptably high | No defensible routine condition | Do not use as a normal recovery path |
No schedule pressure makes an unverified format safe. If two verified destinations do not exist, the full card is an original and stays out of circulation.
What to Do When Camera Media Fills
- Call the condition clearly. The 1st AC tells the operator and AD which camera, slot, roll, and card is full. Stop improvising until responsibility for the original is clear.
- Protect the card. Remove it only when the camera permits, engage its write-protect mechanism where available, place it in the "shot" side of the case, and update the card log. Never place full and cleared media in the same unlabeled pile.
- Check the active recording path. Confirm whether relay recording has moved to another slot, whether simultaneous cards filled together, or whether the camera stopped. Roll a short test on the active medium and play it back before the next take.
- Inventory every approved medium. Count blank, active, full, copying, verified, and failed cards for A-camera, B-camera, drones, crash cameras, and sound. Do not treat CFexpress Type A, Type B, CFast 2.0, SD UHS-II, and Codex Compact Drives as interchangeable names.
- Calculate the time remaining. Use the Media Offload Time Calculator with the full card size and the slowest link in the chain: card, reader, port, cable, or destination drive. Add checksum verification and handling time.
- Give the AD a real recovery window. State "38 minutes to two verified copies," not "data is almost done." The AD can pull lunch, shoot inserts, rehearse, prelight, or change locations around a known window.
- Copy to two independent destinations. Use verified-copy software that produces a checksum report or media hash list. Folder size alone is not an integrity check. Keep the camera original untouched during both copies.
- Spot-check structure and playback. Confirm expected roll folders, clip count, first and last clip, audio presence, and camera metadata. Resolve naming conflicts before releasing the card.
- Obtain release and format in-camera. Only the designated data manager releases media. Format in the recording camera, select the correct filesystem and project settings, then record and play a test clip.
- Log the incident. Record the fill time, codec, frame rate, capacity, actual recording duration, copy time, and schedule effect. Recalculate the remaining shoot's media requirement that day.
If a local purchase is unavoidable, use an exact-media search such as Sony CFexpress Type A TOUGH cards, then cross-check the model, capacity, and sustained-write rating against the camera's approved-media list. Do not let local availability override compatibility.
This sequence produces a safe blank card and a documented reason the shortage happened. It does not trade irreplaceable footage for 20 minutes of schedule.
Pro Tips and Common Mistakes
Pro Tip 1: Run a physical card inventory at call and after lunch. The log should show serial or card ID, capacity, camera, roll, and status. Ten minutes of accounting prevents a full card from being mistaken for a cleared one.
Pro Tip 2: Configure dual-slot behavior deliberately. Relay mode extends duration. Simultaneous mode creates an in-camera duplicate. Write the selected mode on the camera report so the AD understands what the second card is doing.
Pro Tip 3: Add at least 30% operational media above the calculated recording volume. For observational documentary work with an uncertain shooting ratio, 50% is safer. A 1.2 TB estimate becomes 1.6 TB after a 30% allowance.
Pro Tip 4: Test every card, reader, cable, SSD, and external-media mount with the final codec before the shoot. A sealed spare that has never sustained the camera's required write speed is not a production-ready spare.
Common Mistake 1: The mistake: buying "CFexpress" without naming the type. The fix: specify Type A or Type B, capacity, approved model, and sustained-write requirement. The cards are physically different.
Common Mistake 2: The mistake: treating copy completion as verification. The fix: create checksum-verified copies on two independent destinations and save the report before release.
Common Mistake 3: The mistake: planning only A-camera media. The fix: calculate B-camera, sound recorder, drone, video assist, and specialty-camera requirements as separate lines.
Frequently Asked Questions
Can I format a full card during the shooting day?
Yes, but only after the designated data manager confirms the required verified copies and releases that exact card ID. Format it in the camera that will record to it, then capture and play a test clip. If ownership of the release decision is unclear, do not format.
Which professional media types are easiest to confuse?
CFexpress Type A and Type B share a family name but have different dimensions. Sony FX6 and α7S III use Type A/SD combination slots, while RED V-RAPTOR uses Type B. ALEXA 35 uses Codex Compact Drives, and Blackmagic Pocket Cinema Camera 6K models support CFast 2.0, SD UHS-II, and approved USB-C media.
How much extra recording media should a production carry?
Use 30% above the calculated volume as a working minimum for a controlled narrative schedule. Use 50% or more for documentary, live events, slow motion, or any day with an uncertain shooting ratio. The buffer must exist in each device's compatible format.
Is one SSD copy enough before reformatting?
Not for a professional reuse workflow. One destination can fail, disconnect, or contain a corrupted copy. Create at least two verified copies on independent physical destinations, then follow the production's backup policy for transport and separation.
What should I do after an accidental format?
Stop using the card immediately. Do not record tests, reformat again, or run random consumer recovery software. Contact the camera or media manufacturer's support channel and a qualified data-recovery provider, preserving the card's exact state.
Related Tools and Reading
Calculate acquisition volume with the Film Production Storage Calculator. Estimate the emergency copy window with the Media Offload Time Calculator, then verify codec throughput with the Data Rate Calculator. The film production storage guide covers the complete data path. Timecode in Film Production explains roll and sync continuity. If lost time threatens the day count, use the scheduling framework in How to Schedule an Indie Feature. You can also browse production support resources in the film directory.
Protect the Original Before the Schedule
Running out of cards is a capacity problem. Formatting unverified media turns it into a footage problem. Announce the condition, protect the original, identify the active recording path, give the AD a measured delay, make verified copies, and release media through one accountable person.
Relay modes, supported cards, and recovery options differ by camera and firmware. Test the exact package rather than relying on a model-family assumption.
> Affiliate Disclaimer: Some links in this post are affiliate links. If you purchase through them, Tools for Film earns a small commission at no extra cost to you. This support helps us keep our calculators and tools free.
What is the tightest media shortage you have handled on set, and which recovery step protected the footage without sacrificing the shot?
