# Video Trimmer - Cut MP4 Online Free Set start and end times to trim MP4, WebM, and MOV clips privately in your browser ### Input & Times Video file MP4 / WebM / MOV Start time _0 or 0:05_ End time _10 or 1:00_ Use seconds (12.5) or clock time (1:02.5 / 0:01:05). End must be after start. Trim Video Clear Processed in your browser. Review the exported range before sharing. Max ~100 MB. ### Trimmed Preview Your trimmed video will appear here after processing ## Trim a video by start and end time This online video trimmer creates a new MP4 from one continuous range of your source video. Use it to cut an intro, keep a product demonstration, or extract the useful section of a screen recording. Enter seconds or a clock-style time such as 1:05.5. Preview the new clip before sharing it, especially when the first or last visible frame matters. The selected file is processed in your browser instead of being sent to a video-editing server. Keep your original file: a trimmed export is a new, compressed copy. ## How to trim a video online Set a clear beginning and ending, then review the exported clip before you use it. 1. **Upload a video** Choose an MP4, WebM, or MOV file up to about 100 MB. The clip is processed in your browser rather than sent to a video-editing server. 2. **Set start and end** Enter start and end times in seconds or as MM:SS or HH:MM:SS. The end time must be after the start time. 3. **Press Trim Video** The tool creates a new MP4 from the selected range. Keep the tab open until the preview and download are ready. 4. **Preview the cut** Play the result beside the controls to confirm the in and out points look right before you share the file. 5. **Download and clear** Download the trimmed MP4 when you are happy with it, then press Clear before processing another clip. ## Example: shorten a screen recording for a bug report ### Before A five-minute recording contains only thirty seconds that show the issue. ### After Set the start just before the action and the end after the error message, then download a short MP4 that teammates can review quickly. Use Video Compressor next if the attachment must fit a chat or email size limit. ## When to use a video trimmer ### 1. Bug reports Isolate the moment a problem appears. ### 2. Product demos Remove setup and keep the useful interaction. ### 3. Lecture excerpts Save one explanation from a longer recording. ### 4. Social clips Create a focused segment before resizing or adding captions. ### 5. Family videos Keep a highlight without editing a full timeline. ### 6. Support handoffs Share the exact part a teammate needs to see. ## Trimming versus compressing These jobs solve different file problems. | Need | Video Trimmer | Video Compressor | | --- | --- | --- | | Remove unwanted time | Yes | No | | Keep full duration but reduce size | No | Yes | | Output | Shorter MP4 | Smaller MP4 | For both a shorter and smaller file, trim first and compress the result afterwards. ## What this trimmer does not do - It creates one continuous clip rather than a multi-cut sequence. - It does not add titles, fades, captions, or transitions. - A new MP4 is exported, so retain the original for archival or lossless work. - Long and high-resolution sources take more time and memory. ## File handling The selected video is processed in your browser rather than uploaded to a video-editing server. Keep the tab open while the export is running; closing or refreshing stops the job. Downloads save through your browser’s normal download settings. ## Frequently Asked Questions ### How accurate is the trim? The tool creates a new clip from your selected range, so the result is normally close to the chosen times. Check the preview and nudge a time by a tenth of a second when an exact visual in-point matters. ### What time formats are accepted? You can type plain seconds such as 12.5, or clock-style times such as 0:45, 1:02.5, or 1:05:30. The end time must be later than the start time. ### Will trimming reduce quality? A new MP4 is created, so it is not a bit-for-bit copy of the source. For most phone and screen recordings the result looks close, but keep the original if you need a lossless master. ### Can I trim without re-encoding? Not in this version. The tool prioritizes a reliable previewable result over a copy-only cut. Keep the original file for professional editing workflows. ### Which formats can I upload? MP4, WebM, MOV, MKV, M4V, and AVI are accepted when the browser or filename indicates video. Output is always MP4. Common H.264 clips work best. HEVC phone clips may work depending on the local browser processing build, but are less reliable than H.264. ### Is my video uploaded to a server? No. The selected file is processed in your browser and returned as a download instead of being sent to a video-editing server. ### Why is the first run slow? The first job can take longer while the page prepares media-processing components. Later jobs are usually quicker; long or high-resolution clips still need more time. ### Can I remove multiple segments or add fades? This tool cuts one continuous range. For multi-cut timelines, transitions, or audio fades, use a full editor. You can chain jobs by trimming once, downloading, then trimming again for a second segment. ### Does audio stay in sync? The tool exports the selected picture and audio together. Watch the preview if timing is critical, especially with unusual source formats. ### How large can the file be? About 100 MB per upload. Larger files should be compressed or pre-trimmed elsewhere first. The limit protects browsers from running out of memory while the whole job lives in RAM. ## Next steps for your clip - [Video Compressor](https://www.toolcomb.com/video-compressor) - Reduce the size of the trimmed MP4. - [Video to GIF](https://www.toolcomb.com/video-to-gif) - Make a short silent loop. - [Video Frame Extractor](https://www.toolcomb.com/video-frame-extractor) - Save a still image from a clip. - [Video Add Subtitles](https://www.toolcomb.com/video-add-subtitles) - Add caption text to a video. ## Related Tools Discover more free tools that might help with your next task. [Add Music to Photo Still photo + soundtrack → MP4 video Use Tool](https://www.toolcomb.com/music-to-photo) [Remove Audio from Video Mute a video / strip the soundtrack Use Tool](https://www.toolcomb.com/remove-audio-from-video) [Add Music to Video Replace a video soundtrack with your music Use Tool](https://www.toolcomb.com/add-music-to-video) [Audio Trimmer Cut MP3/WAV clips by start and end time in the browser Use Tool](https://www.toolcomb.com/audio-trimmer) [Audio Joiner Merge multiple audio files into one track Use Tool](https://www.toolcomb.com/audio-joiner) [Audio Converter Convert between MP3, WAV, OGG, and M4A locally Use Tool](https://www.toolcomb.com/audio-converter) ### Related guides Read the how-to, then come back to this tool when you are ready to run it locally. - [Burn-In Subtitles from SRT: Limits and Workflow Hardcode captions in the browser with FFmpeg.wasm when sidecar SRT fails on social or review links. Timing, font, ~100 MB caps, and accessibility tradeoffs.](https://www.toolcomb.com/blog/burn-in-subtitles-from-srt-limits) - [How to Trim and Compress Video Without Uploading Cut screen recordings and shrink MP4 for Slack, LMS, and email caps using FFmpeg.wasm locally. CRF vs bitrate, ~100 MB limits, and resize when needed.](https://www.toolcomb.com/blog/how-to-trim-and-compress-video-without-uploading) - [Best Free Browser Audio and Video Tools (FFmpeg.wasm) Trim, join, compress, GIF, MP3, subtitles, and waveform exports without uploading media. How ToolComb's FFmpeg.wasm tools map to real chores - and where ~100 MB and first-load limits apply.](https://www.toolcomb.com/blog/best-free-browser-audio-and-video-tools) [View All Tools](https://www.toolcomb.com/tools)