Trim video to WebM
Keep a selected time range from your clip and export it as a new WebM recording.
Trim video to WebM: inputs, results and limitations
Keep a selected time range from your clip and export it as a new WebM recording.
How to use Trim video to WebM
- Choose the appropriate input file. General limits are 30 MB per file and 100 MB total.
- Review the options before running: Start time (seconds): 0 · End time (seconds): 2 · Width: 640 · Video bitrate (bits/second): 1500000
- Inspect the preview or result, then download a new file.
An illustrative use case
A WebM excerpt from the beginning of a local demonstration.
Select a real sample file you are allowed to process. Begin with a short, simple input before attempting a complex document or recording.
What to inspect in the output
Set start before end and keep the requested segment inside the source duration. Watch the first and last frames in the exported clip. The recording takes real time.
Where this tool stops
Re-records the selected clip as WebM in real time. Audio depends on browser capture support.
Settings and starting values
| Control | Starting value |
|---|---|
| Start time (seconds) | 0 |
| End time (seconds) | 2 |
| Width | 640 |
| Video bitrate (bits/second) | 1500000 |
Troubleshooting Trim video to WebM
Check that the original clip plays in this browser. Keep requested times within its duration and leave this tab active while real-time recording completes. If a codec is rejected, use a supported source rather than only changing its extension.
Questions about Trim video to WebM
Can I keep the original MP4 container?
This version exports WebM rather than cutting the original container without re-encoding. Browser capture can also affect sound availability.
What input does Trim video to WebM need?
Choose video/* input. Re-records the selected clip as WebM in real time. Audio depends on browser capture support.
Which options does Trim video to WebM provide?
Start time (seconds), End time (seconds), Width, Video bitrate (bits/second). Review the starting values in the table and adjust them for your input.
Your original input is preserved. Review the new output before using it in a published page, customer delivery or production workflow.
JavaScript enables the interactive workspace.