ProRes Video on iPhone

Shoot Like a Pro

Resolution Matters

Moving from HD to 4K resolution is step one to capture high quality content. And if you’re already shooting in 4K at 60fps, you’re working with incredibly large file sizes.

Connect Compatible Sandisk Storage

to Your iPhone for 4K60

Shooting in ProRes 4K60fps requires a compatible USB-C™ connected external storage device with a minimum write speed of 220MB/s1.

Be Ready for Post-Production

After recording in 4K video directly to external storage, you can edit on the drive itself, or quickly transfer your videos to your laptop or PC for real-time editing.

Let’s break down what creators need to know about using ProRes with compatible external storage from Sandisk, why external storage is essential, and how to build a mobile video workflow that keeps up with your creative vision.

4K60fps File Sizes Are Massive —

Here’s What You’re Dealing With

Even with 4K at 30fps, a single minute of ProRes can take up around 6GB2. If you’re recording internally, you’re quickly competing with your phone’s OS, apps, and photo library for space.

Approximate File Sizes (ProRes 422 HQ)2:

Resolution Frame Rate File Size (per minute)

4K 30fps ~6GB

4K 60fps ~12GB

Why External Storage Matters for 4K60 ProRes

Internal Storage Workflow

Limited to 4K30 ProRes only1

Sharing storage space with apps, media, and OS

More time spent transferring files for post-production edits

External Storage Workflow

Enables 4K at 60fps ProRes recording1

Dedicated, high-capacity recording storage (no running out mid-shoot)

Files can be edited on the drive – just connect to your laptop