Trim and merge audio, then create MP4 videos with images and subtitles.
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Segra is a local media utility for trimming MP3 and WAV files, merging audio in order, and turning audio plus images into MP4 videos.
Instead of a complex timeline editor, Segra focuses on a simple create-and-export flow. Add optional plain-text or SRT subtitles and adjust when each sentence appears.
Key features
- Trim one range from an MP3 or WAV and save it as a new file.
- Join multiple MP3 or WAV files in the order you choose.
- Create MP4 videos from audio and images.
- Add plain-text or SRT subtitles and adjust sentence timing.
- Choose aspect ratio, quality, motion, and image fitting for video output.
- Save finished videos or hand them off to YouTube / YouTube Studio through the system share sheet.
- Original files stay untouched; Segra creates new output files.
Privacy and purchases
- No account or cloud sync is required.
- Selected media is processed on-device and is not uploaded to ONNELLAB servers.
- No ads, analytics SDKs, or tracking tools.
- Free plan with a one-time Pro upgrade and no subscription.