![Image 1 — [URGENT - Feature still shooting] RED Gemini 5K: random corruption (purple/white blocks), some clips crash every app](https://preview.redd.it/c9d1rs71swth1.jpg?width=4000&format=pjpg&auto=webp&s=c5869ebf9198addf121676a3a9cfc83c54628531)
![Image 2 — [URGENT - Feature still shooting] RED Gemini 5K: random corruption (purple/white blocks), some clips crash every app](https://preview.redd.it/ecxysr71swth1.jpg?width=1200&format=pjpg&auto=webp&s=e0e80ffc9950154592d7e4597be314ae599e639f)
![Image 3 — [URGENT - Feature still shooting] RED Gemini 5K: random corruption (purple/white blocks), some clips crash every app](https://preview.redd.it/4sb5dt71swth1.jpg?width=1200&format=pjpg&auto=webp&s=ce58c2f93ea7c833f57013d7ae51a1df7ac34658)
![Image 4 — [URGENT - Feature still shooting] RED Gemini 5K: random corruption (purple/white blocks), some clips crash every app](https://preview.redd.it/pm4f6s71swth1.jpg?width=1200&format=pjpg&auto=webp&s=5010ae126de0163c54e29c460ce6040512aa4a23)
[URGENT - Feature still shooting] RED Gemini 5K: random corruption (purple/white blocks), some clips crash every app
Hi all,
I'm the data manager on a feature film currently shooting in France. We have a recurring corruption issue on our A-cam (RED Gemini) that nobody, including our rental house, has been able to solve. We're still shooting, so any help at all is more than welcome.
In contact with RED support they don’t have a solution yet
The problem
- Randomly, the first frame of some clips is broken into purple/white corruption blocks.
- In worse cases, that frame isn't decoded at all (shows as media offline).
- In the worst cases, the clip crashes every app: Resolve, REDCINE-X PRO, Silverstack. The only way we've read one is on Windows with an Intel GPU (Resolve flags the first frame offline but plays the rest).
- Nuke flags the corrupted first frame as a debayer error.
- The B-cam (RED Komodo) has zero issues, same workflow, same DIT station.
- Happens on almost all mags, randomly. No link to a specific card.
Setup
- Camera: RED Gemini, 5120×2160, 5:1 (sometimes 8:1), 25 fps. Firmware: last v7.4.1
- Media: RED Mini-Mags 120 GB & 480 GB (High Speed)
- Offload: RED reader → Mac Studio M2 Ultra, later replaced by Mac mini M4. Silverstack XT, XXH64 checksums.
- Checksums always match. The copy is identical to the card.
What we've already tried (no success)
Camera / power / media
- Swapped for a second Gemini: issue persists
- Factory reset of the original body
- On the new body: no hot swap, power accessories via D-Tap only, I/O AND hotswap removed
- Tried brand new 240 GB Mini-Mags: issue persists
- Cleaned all connectors (mags, reader, camera)
DIT side
- Changed the backup station (Mac Studio M2 → Mac mini M4)
- Changed the card reader and its cable ( try new 240gb media)
- Offloaded fully isolated: no UPS, no internet, nothing else plugged in
- Updated Silverstack XT to the latest version
Playback / cross-checks
- In-camera playback before offload: the corruption is NOT visible.
- But if we put the offloaded mag back in the camera and play it again, the corruption appears.
- Reading the card in RCX on the computer before offloading: corruption is already there.
- Same crash from the card, a TeraCopy copy, a Finder drag-and-drop, the shuttle drive and the DAS.
Questions
- Has anyone seen first-frame corruption like this on Gemini (or other DSMC2 bodies)?
- Any known firmware issue, or a setting (pre-record, recording mode, format options, etc.) that could cause it?
- Could mounting the mag on a computer alter the clip ?
Any lead, even a small one, would really help. Thanks a lot! <3