Video Trimmer
Cut a clip out of a video by start and end time. The fast mode finishes in seconds without re-encoding.
No data sent to serverRelated Tools
Fast Cut vs Frame-Accurate Cut
Video is not stored as a series of complete pictures. Every second or two there is a keyframe— a full image — and the frames between it are stored only as descriptions of what changed. A player cannot start in the middle of that chain, which is why a cut has to begin on a keyframe.
Fast cutrespects that. It copies the compressed video straight across, so it finishes in seconds and the picture is bit-for-bit identical to the source. The cost is that your start time snaps to the nearest keyframe before it — the clip may begin up to a second or two earlier than you asked.
Frame-accurate cutdecodes the video, cuts precisely where you said, and re-encodes from there. It lands exactly on your times at the price of a full re-encode: roughly 1–3 minutes per minute of 1080p footage, plus a small amount of quality loss.
Use fast cut for almost everything. Reach for frame-accurate only when the exact frame matters — cutting on a beat, on a word, or matching another clip.
Entering Times
0:45— 45 seconds in2:30— two minutes thirty1:05:20— one hour, five minutes, twenty seconds90— plain seconds also works- Leave End blank to keep everything from the start time to the end of the video
Trimming Is the Best Compression There Is
If you are trying to get a video under an upload limit, cutting length beats any encoder setting. File size is bitrate multiplied by duration, so removing half the running time halves the file with zeroquality loss — while compressing to half the size means every remaining frame gets half the data.
The usual order is: trim first, then compress if it is still too large.
Technical notes
- Seeking: the start time is applied before the input is decoded, so skipping ahead is near-instant even in long files
- Fast mode: streams are copied and timestamps rebased to zero so the clip starts cleanly
- Precise mode: H.264 at CRF 20 with AAC audio at 192 kbps
- Output: always MP4 with faststart, regardless of the input container
- Audio: cut at the same points as the video; a copied audio track stays untouched
Finding Your In and Out Points
The tool takes times rather than showing a scrubbable timeline, so the practical workflow is to find the moments first in any player you already have.
Most players show the current position as you scrub, and VLC and MPV both display frame-accurate timing. Note the point just before where you want the clip to start — in fast mode the cut snaps back to the nearest keyframe anyway, and starting a fraction early is far less noticeable than clipping the first word of a sentence.
For the end, err slightly late for the same reason. Trimming a little extra off a clip is easy; getting back a syllable you cut is not.
FAQ
My clip starts a second earlier than I asked.
That is the keyframe snap in fast mode. The cut has to begin on a full frame, and the nearest one before your time is used. Tick the frame-accurate option to land exactly on the requested moment.
Does fast mode lose quality?
None at all. The compressed video is copied across without being decoded, so the frames in your clip are identical to the frames in the source.
Why did a two-hour file trim in five seconds?
Because nothing was re-encoded and the seek happens before decoding. The tool jumps straight to your start point and copies from there.
Can I cut out a section from the middle and join the rest?
Not here — this tool extracts one continuous range. Removing a middle section requires exporting two clips and concatenating them, which needs desktop software.
The audio is slightly out of sync at the start.
This can happen in fast mode when the audio and video keyframes do not line up. Switching to the frame-accurate option re-encodes both together and removes the offset.
Is my video uploaded?
No. Trimming happens inside your browser tab, so nothing is transmitted and there is no file-size paywall.
How do I find the exact timestamps?
Scrub through the video in any player and note the position. VLC and MPV both show frame-accurate timing, and starting a fraction early is safer than clipping the first moment of speech.
Can I trim without converting the format?
Fast mode already does exactly that — the streams are copied and only the container is rebuilt, so nothing is re-encoded.
Does trimming work on any video format?
MP4, MOV, MKV, WebM, and AVI all work. The output is always MP4, since that is what upload targets accept.
Can I trim just the audio out of a clip?
Trim first, then run the result through the video to MP3 tool. Both steps run locally and the trim itself is near-instant.
⚠️ Reference Only
Output is generated based on your input and is provided for reference. Results may vary depending on your specific use case, edge cases, or environment-specific behavior. We do not guarantee accuracy of conversions, validations, or computed values.
Always verify critical outputs against official documentation or production environments. We are not responsible for any decisions or losses based on these tool results.