Question 1

What does the Trim Video tool do?

Accepted Answer

It cuts a clip out of a longer video using exact start and end timestamps that you can set numerically or by scrubbing the preview.

Question 2

Is my video uploaded to a server to be trimmed?

Accepted Answer

No, trimming happens entirely in your browser, so the file never leaves your device.

Question 3

What's the difference between fast trim and the default mode?

Accepted Answer

Fast trim copies the video and audio streams without re-encoding, which is much quicker and keeps the original quality, but the cut points may shift slightly to the nearest keyframe. The default mode re-encodes for frame-accurate cuts.

Question 4

Is it free to use?

Accepted Answer

Yes, it's free and doesn't require an account.

Question 5

Why does fast trim sometimes fail or produce an odd result?

Accepted Answer

Stream copying depends on the source file's internal structure, and some containers or codecs don't support it cleanly — switching off fast trim re-encodes the clip instead, which works on virtually any input.

Frequently asked questions about Trim Video

What does the Trim Video tool do?

Is my video uploaded to a server to be trimmed?

What's the difference between fast trim and the default mode?

Is it free to use?

Why does fast trim sometimes fail or produce an odd result?