Create Offline Edit Proxies with Compressor on a Rented Mac

Short answer: for occasional R3D or BRAW proxy transcoding, request Figment's i3 Mac at $49/month; for recurring deliveries or heavy debayer, request an M-series plan from $95/month. The $29 virtual Intel macOS environment runs macOS but has no GPU acceleration and no audio, so it is not a good host for heavy video transcoding — pick it for Xcode 26-or-earlier builds, not Compressor jobs. Apple ships three built-in ProRes Proxy presets (eighth, quarter, half size) in the Compressor User Guide's Proxy category; Final Cut Pro proxy media is Apple ProRes 422 Proxy or HEVC at 12.5% to 100% of the original frame size, documented in the Final Cut Pro User Guide. Request a configuration at /mac-hosting/start; the specific chip, RAM, disk and macOS build are confirmed in the written quote.

RED (.r3d) and Blackmagic RAW (.braw) originals carry hundreds of megabytes per second of debayerable data and will skip frames on most editing laptops. The usual fix is Apple ProRes 422 Proxy: a smaller intermediate designed for offline editing. You make creative decisions on the proxies, then relink to camera originals for grade and final output. The decompress, debayer and re-encode steps are CPU heavy and generally run for hours, which is exactly the workload worth pushing to a rented Mac overnight instead of pinning your laptop to the wall all night.

When Proxies Are Worth the Round Trip

Not every clip needs transcoding. ProRes 422 and ProRes 422 HQ play back on recent laptops without a proxy. The formats that almost always benefit from proxies for assembly editing are:

• R3D (REDCODE RAW) — proprietary compressed RAW; per-frame debayer is CPU-bound and fan-noisy on laptops.
• BRAW (Blackmagic RAW) — generally light on a current Mac, but three or more concurrent streams on a multi-cam timeline swamp mid-range machines.
• ARRIRAW — I-frame RAW with heavy decode cost.
• High-frame-rate ProRes — 4K/120p ProRes 422 HQ and ProRes 4444 XQ at 4K both sustain multi-hundreds of megabytes per second of read.

If your project is a single camera at 1080p ProRes 422, skip the proxy workflow entirely. If it is a documentary with hours of R3D or BRAW across three cameras, proxies are the only sensible path.

Installing and Licensing Compressor on the Rental

Compressor is sold by Apple on the Mac App Store (listed at $49.99 at the time of writing — confirm the current price on the store page). A purchase against your Apple ID entitles installation on Macs signed in to that account, so you do not repurchase per rental; the Apple ID login and any developer or codec entitlements remain the customer's responsibility.

Before the batch, do these four things on the rented Mac:

1. Check the macOS build in your written quote. Figment states the macOS build at quote time; confirm the Compressor release you intend to install supports that macOS version per the App Store page's system requirements.
2. Install the vendor RAW codecs your footage needs. Compressor will fail on .r3d without RED's free Apple Workflow Installer, and on .braw without Blackmagic's RAW codec/plug-in. Download from each vendor directly on the rented Mac.
3. Decide where the source media lives. The clean rental has macOS only — install any mounting tool (SMB share, Mountain Duck, Rclone, Resilio) you need. Reading from fast local storage generally beats a congested network share for a long batch.
4. Pick an output destination with enough free space. Half-size ProRes 422 Proxy at 4K is in the 10–15 GB per hour range in practice; plan for your full card set, not one clip. Measure your own first clip to size the rest.

Building a ProRes Proxy Preset for Final Cut Pro

Compressor's built-in Proxy category contains ProRes Proxy eighth, quarter and half size. For 4K documentary assembly, half size is the common choice: fluid playback on a laptop with recognisable detail for framing calls. Duplicate the built-in preset rather than editing it so future Compressor updates do not surprise you:

1. In the Preset Library, select ProRes Proxy half size and duplicate it.
2. Open the Video inspector and leave Frame Rate at Automatic. The Compressor User Guide's frame-rate page notes Automatic "matches the frame rate of the transcoded file to that of the source file"; a mismatch here is the single most common reason proxies look stuttery after relink.
3. Leave the codec at Apple ProRes 422 Proxy.
4. In the job's output filename field, configure the name so each proxy carries the camera original's base name with a .mov extension — A001_C003_1104A5.r3d should produce A001_C003_1104A5.mov.
5. Save the preset with a descriptive name, for example ProRes Proxy Half — FCP Reconnect.

Compressor can share custom presets through its Preset Library; save the exported file to your own storage (iCloud Drive, your NAS, a Git repo of project standards) so the next rental starts from a known good recipe instead of a reconstruction from memory. Export from Compressor rather than hand-writing the preset file; the internal format is Compressor's to own.

Reader tool: ten-minute acceptance checklist before you queue the batch

Transcoding six hours of R3D only to find the proxies do not relink is the worst way to lose a night. Run this short acceptance pass on one representative clip per camera before you walk away:

• One R3D or BRAW clip from each camera copied into a test source folder that mirrors the real card layout (A001/Clip/...).
• Compressor job submitted with the new preset into a test output folder, and the job finishes without red failure state in the Active pane (Window > History shows the result).
• The resulting proxy filename matches the source base name and differs only by the .mov extension.
• The proxy folder structure mirrors the source folder layout. Final Cut Pro uses filename proximity, directory structure, and file-attribute checks to match — not filename alone — so parallel folders help the matcher.
• Imported into a scratch FCP library, File > Relink Files > Proxy Media resolves the test clips and the summary reads "N of N files matched" before you accept.
• Switch the viewer to View > Media > Proxy and scrub: the frame rate, aspect, and timecode read correctly.
• Disk-space math done: expected proxy size × total source hours < free space on the output volume, with a 20% margin.
• Energy Saver set so the Mac does not sleep display or disk. caffeinate does not disable screen locking, and closing a VNC or browser console window does not log the user out — use Energy Saver to control sleep.

If any box fails, fix the preset or structure before queuing the full batch. If every box passes, drag the full set in, apply the preset, start the batch, and log off.

Reconnecting Proxies in Final Cut Pro

Copy the proxy folder to the editing machine (or mount the shared volume), then in Final Cut Pro choose File > Relink Files > Proxy Media. Per Apple's Relink clips to media files page, FCP uses filename proximity, directory structure and file-attribute checks to resolve matches, so a proxy tree that mirrors the source tree matches cleanly. Point Locate All at the top of your proxy folder, review the "X of Y files matched" summary before accepting, then switch the viewer to View > Media > Proxy.

If a clip fails to match, the usual culprits are a renamed proxy, a stray suffix from a batch-rename step, or an output folder structure that lost the per-camera parent folders. Rename or rearrange, then relink again. Remote video preview is not a colour-calibrated or live-hardware surface; grade and final mastering belong on the editor's trusted monitor and audio chain.

Which Figment Plan Fits the Job

Headline prices are monthly, so a two-week project still pays the monthly rate; there is no published daily rate. The i3 and M-series tiers collect requests until supply is confirmed in the quote, so send a date range and your format mix and ask for the available chip and macOS build. Managed Build Mac at $249 bundles one M-series Mac, CI setup, backups, monitoring and 30 minutes of monthly support — useful when a weekly deliverable needs a stable pipeline rather than one overnight transcode. Browser-console access is the verified path for the $29 VM; physical plans state their access method in the quote.

Start the request at /mac-hosting/start, or read the service overview at /mac-hosting.

Related reading:

• Migrate a Final Cut Pro Library to a Rental
• Consolidate a Logic Pro Session
• Set Up a GitHub Actions Self-Hosted Runner