Support

Filmtone for iPhone support

Use this page for public-release support details: contact, supported devices, supported codecs, and the current boundaries of the iPhone build.

Operator

Takumi Chiba

Contact

chiba@fores-tone.co.jp

Email support for release issues, media compatibility questions, and permission problems.

Supported devices

iPhone · iOS 26.0+

Current codec surface

H.264 / AVC, HEVC / H.265, Apple ProRes in · H.264 MP4 out

Contact flow

How to contact support

For bugs, compatibility questions, or release issues, contact the operator by email. Include enough device and source detail so we can reproduce the problem without asking you to restate the basics.

  1. 1

    Email the support address

    Send your message from the mailbox you want us to reply to. Japanese or English is fine.

  2. 2

    Add device and source details

    Tell us the iPhone model, iOS version, whether the source came from Photos or Files, and what happened.

  3. 3

    We follow up by email

    We reply with troubleshooting steps or follow-up questions. If we need a sample file, we will ask before you send anything.

Support email

chiba@fores-tone.co.jp

Use this address for App Store release support, media compatibility questions, and permission-related issues.

Include these details

  • iPhone model.
  • iOS version.
  • Whether you imported from Photo Library or Files.
  • Source type, codec, resolution, duration, and whether audio is present.
  • What you tapped, what you expected, and the exact error or screenshot.

Devices

Supported devices and import paths

Current public-release support is intentionally narrow: iPhone, iOS 26.0 or later, and user-selected media from Photos or Files.

Device family

iPhone only. This release is not a universal iPad build.

OS

iOS 26.0 or later.

Import routes

Pick one photo or video at a time from Photo Library or Files.

Media

Supported codecs and export profile

Video compatibility is centered on common iPhone and camera-delivery formats. Export is fixed to a simple, predictable MP4 profile for this release.

Supported video input codecs

  • H.264 / AVC video
  • HEVC / H.265 video
  • Apple ProRes video

Current export profile

  • H.264 in MP4.
  • Up to 1920px long edge at 30 fps.
  • Source audio policy: preserved when the source contains audio.

Known unsupported

Current unsupported items and limits

These are current release boundaries, not a lifetime promise. If your file falls outside them, the iPhone app may reject it or ask you to convert it first.

  • Avid DNxHR / DNxHD video is not supported on iPhone. Convert to H.264, HEVC, or ProRes first.
  • Sources longer than 5 minutes are outside the release cap.
  • Sources above 3840px on the long edge are outside the release cap.
  • Sources larger than 8 GB are outside the release cap.
  • iPad is not supported in this public iPhone release.
  • Files that are not photos or videos, or videos with no video track, are not supported.
Privacy policyBack to Filmtone