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# Screen recording for App Review capture tools codecs size and attach versus link

> Source-anchored research for Screen recording for App Review capture tools codecs size and attach versus link. Run status: COMPLETED.

Parent: [macOS App Testing and Release QA](https://llms-explorer.com/tree/macos-app-testing-and-release-qa/) · 3 facets · 6 facts · page: https://llms-explorer.com/tree/screen-recording-for-app-review-capture-tools-codecs-size-and-attach-versus-link/

## How it works

- App Review Information Notes allow up to 4000 bytes, and a reply to App Review allows 4000 characters with optional file attachment. The fetched pages state no attachment file-type list, per-file size cap or file count. Treat the video as a supplement and describe the flow in text. (medium confidence) (verified as of 2026-10-02) — [source](https://developer.apple.com/help/app-store-connect/reference/app-review-information)

## Measurements and reference values

- Apple's published codec, size and length limits (H.264 High Profile Level 4.0 at 10-12 Mbps or ProRes 422 HQ; .mov/.m4v/.mp4; 500 MB; 15-30 s; Mac previews 1920x1080 landscape) are for App Store app previews. They are not documented as limits for App Review attachments, so they are a safe conservative target but not a rule. (low confidence) (verified as of 2026-10-02) — [source](https://developer.apple.com/help/app-store-connect/reference/app-information/app-preview-specifications)

## Facts and statements

- On macOS, Shift-Command-5 opens the Screenshot tool with record-entire-screen, record-window and record-portion options. Recordings save as .mov files named 'Screen Recording <date/time>'. Options include microphone choice, timer, mouse pointer visibility, and an HDR or SDR capture format. (low confidence) (verified as of 2026-10-02) — [source](https://support.apple.com/guide/mac-help/take-screenshots-or-screen-recordings-mh26782/mac)
- Developers reported failed review-attachment uploads in App Store Connect (thread from March 2024). Renaming .MP4 to lowercase .mp4 fixed one case. Wrapping the file in a .zip fixed another. Rename to lowercase and zip are practical fallbacks. (low confidence) (verified as of 2026-10-02) — [source](https://developer.apple.com/forums/thread/749073)
- App Review's own forum tips say to put hardware-related demonstrations in the Notes field of the version's App Review Information. For hardware integration it asks for a video of the real hardware plus the app on a physical device, not only a screen recording. A network monitor needs no accessory, so a screen recording suffices. (low confidence) — [source](https://developer.apple.com/forums/thread/810791)
- Attach the recording to App Review Information or the reply as the default, so the reviewer needs no external access and the evidence stays with the submission. Use a link only if the upload fails or the file is too large, and then prefer a long-lived unlisted URL over an expiring share link, with the access note in Notes. This is inference from the documented 4000-byte Notes and attach-file support, not an Apple rule. (low confidence) — [source](https://developer.apple.com/help/app-store-connect/manage-submissions-to-app-review/reply-to-app-review-messages)