Basic workflow
- Choose one video from Photos or Files.
- Choose a local soundtrack from Files.
- Adjust video trim, soundtrack start, original audio, music volume, looping, fades, and export quality.
- Preview the mixed result, then export.
- Save to Photos or Share the finished file.
Unsupported music
Music and Apple Music library conversion is intentionally not supported. Use an audio file you own or are authorized to edit and choose it through Files.
Photos access
The system Photos picker does not require broad library access. Add-only access is requested only when you tap Save to Photos. If saving was denied, use Share or change the app’s Photos permission in Settings and retry.
Export did not complete
- Keep the app open while exporting.
- Confirm both selected items are still available.
- Free device storage or choose a lower compatible export quality.
- Retry with different source media if the format is unsupported.
- Use Start Over if a File Provider revoked temporary access.
Contact
For a reproducible issue, contact giangthb@gmail.com with the app version/build, device/OS, the failed step, and exact on-screen error. Do not send private source media unless you deliberately choose to and it is necessary for diagnosis.
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