Settings for this task
| Use case | Setting | What to check |
|---|---|---|
| Keep compatible packets | Same compatible format · bitrate unset | Check both cut boundaries. |
| Share a new MP3 | MP3 · 192 kbps | Re-encodes the retained interval. |
How to use this tool
- Upload the recording and note the measured total duration.
- Enter start and end seconds, with end after start and within the recording.
- Choose a format, process, and listen to both edges of the downloaded excerpt.
Calculated size examples
Calculated, not measured uploads: bytes ≈ bitrate (kb/s) × seconds × 1,000 ÷ 8. MB here means 1,000,000 bytes. Headers, tags and variable bitrate affect actual size. Channels are already included in the total bitrate; do not multiply again.
| Output duration | Format | Bitrate | Estimated audio payload |
|---|---|---|---|
| 0:30 | MP3 | 192 kb/s | 0.72 MB |
| 2:00 | MP3 | 192 kb/s | 2.88 MB |
A range, not a multitrack edit
The tool retains the interval between two timestamps. It does not remove a middle section while joining both remaining ends, add fades or stitch several selections together. To assemble several excerpts, create them separately and use the merge tool. Keep the source so you can revise the selection.
Packet boundaries versus exact editing
Compatible stream copy avoids audio re-encoding, but compressed packets limit where boundaries land. Do not assume sample-accurate cuts from a copy operation. If the clip begins awkwardly, adjust the timestamp and inspect again; choose re-encoding when a copy boundary is unsuitable. The result reports whether stream copy was used.
Choosing the clip's destination format
MP3 is useful for sharing, WAV for many editors, and FLAC for a losslessly coded output. M4A can copy compatible AAC. A matching extension alone does not guarantee copy compatibility: codec and settings both matter. Changing to a lossy codec can introduce additional encoding loss.
Questions about this operation
- How do I enter 1 minute 30 seconds?
- Enter 90 in the seconds field. For a clip ending at two minutes, enter 120 as the end.
- Does trimming always preserve quality?
- Only a successful stream copy avoids re-encoding. Codec changes or an explicit bitrate can trigger an encode.
- Can I cut out silence automatically?
- No, select the timestamps yourself. The page does not run automatic silence detection.
- Can I create a ringtone?
- You can create a short audio excerpt. Device-specific ringtone formats and installation are separate steps.
- Why is there a click at the edge?
- A sudden boundary can interrupt a waveform away from silence. Adjust the selection or use an editor with fades for a smoother transition.