StreamTrim Support
Trim H.264 video to MP4 without re-encoding.
Supported use and limitations
Accepts H.264 in MP4, MOV, MKV or M4V and one AAC/MP3 audio track; exports MP4. Boundaries align to independent keyframes and may extend your selection. Subtitles and other audio tracks are not retained. The interface is in Japanese.
Troubleshooting
Restart the app and check your file format, destination permissions and available disk space. Keep original input files and avoid repeated retries after a storage error. Store purchase, installation and refund procedures are handled by Microsoft Store.
Contact
Email info@caen.co.jp with the app name/version, Windows version, error message and steps to reproduce. Use synthetic examples where possible; do not include secrets or private content.
Contact
For questions about StreamTrim, please contact CAEN Inc. by email.