Free Online Video Trimmer
Cut and trim videos to the exact length you need. Set precise start and end timestamps — zero quality loss using stream copy mode.
Click or drag a video file here
Supports MP4, WebM, MOV, AVI, MKV (up to 2 GB)
Files are processed securely on our server and deleted immediately after download.
About Free Online Video Trimmer
Video trimming is one of the most fundamental video editing operations — cutting a longer video down to the specific portion you actually need. Whether you want to remove a long silent intro from a screen recording, extract a specific segment from a live stream, trim an awkward pause from a presentation recording, or clip the action highlight from a sports video, precision trimming with timestamp control is the fastest way to get exactly the portion you want. Our free online video trimmer lets you set exact start and end timestamps in HH:MM:SS.mmm format and download the trimmed clip in seconds.
The tool is powered by FFmpeg running on our secure processing server, using a technique called stream copy mode for trimming. Instead of decoding the video and audio streams and re-encoding them at the trim point — which would take minutes and introduce re-encoding quality loss — stream copy simply copies the raw encoded data between the specified timestamps directly into a new container file. The result is a trimmed video with absolutely zero quality loss from the trimming operation, produced in a fraction of the time that re-encoding would require. For a 2-hour video file, trimming a 30-second segment using stream copy completes in under 10 seconds regardless of the video's resolution or bitrate.
Key Features
Everything you need — no software installation required.
Stream Copy — Zero Quality Loss
The trimmer uses FFmpeg stream copy mode: the video and audio data are copied directly from the source to the output without any decoding or re-encoding. The trimmed clip is byte-for-byte identical to the original at every frame between the trim points, with absolutely zero quality degradation from the trimming operation itself.
Millisecond Precision Timestamps
Set trim start and end times in HH:MM:SS.mmm format for millisecond-level precision. Specify the exact frame you want to start and end at for sports highlights, reaction clips, or any trim that must begin or end at a specific moment. The preview player lets you verify the exact timestamp before trimming.
Built-in Video Preview
Before setting trim points, watch the video in the built-in player to identify the exact start and end timestamps you need. Pause at any point to read the current timestamp, which you can then copy directly into the start or end time fields. This eliminates guessing and prevents wasted trims from incorrect timestamps.
Near-Instant Processing
Because stream copy requires no re-encoding, trimming is extraordinarily fast. A 30-second clip extracted from a 2-hour 4K video file completes in under 10 seconds. Even very large 2 GB video files can be trimmed in seconds — the processing time is independent of video length and resolution.
All Major Video Formats
Upload MP4, MKV, AVI, MOV, WEBM, and most other common video containers. The tool automatically detects the video codec and uses appropriate stream copy settings for each format. Output is delivered as MP4 for maximum playback compatibility across all devices and platforms.
Secure — Files Deleted Immediately
Your video is uploaded over HTTPS to an isolated server environment. After trimming is complete and the output file is ready for download, both the original and trimmed files are permanently deleted from our servers. Files are never stored beyond the immediate processing session.
How to Use Free Online Video Trimmer
Get your result in seconds — completely free, no registration needed.
Upload your video file
Click the upload area or drag and drop your video file. MP4, MKV, AVI, MOV, and WEBM formats are all supported. Files up to 2 GB are accepted. The built-in video player loads automatically after upload so you can watch the video and identify your trim points before processing.
Find your start and end timestamps
Play the video in the built-in player to locate the exact start point you want to keep. Pause the player at that moment and note the timestamp displayed. Enter this timestamp in the Start Time field. Then continue playing to find the end point and enter it in the End Time field. Use HH:MM:SS format (e.g., 00:02:15 for 2 minutes 15 seconds) or HH:MM:SS.mmm for millisecond precision.
Trim the video
Click Trim Video to begin processing. The server uses FFmpeg stream copy to extract the specified segment from the video file without re-encoding. A progress indicator shows the upload and processing status. For most files, trimming completes in under 30 seconds.
Download your trimmed clip
When processing completes, the trimmed video is ready for download. Click the Download button to save the MP4 file to your device. The filename includes the trim timestamps for easy identification (e.g., video_00-02-15_to_00-05-30.mp4). The trimmed clip is ready for immediate use in any video player, editor, or upload workflow.
Supported Input Video Formats
Wide format support ensures compatibility with virtually any file you upload.
| Format | Description | Best For | Quality |
|---|---|---|---|
| MP4 (MPEG-4) | The most common video format. MP4 with H.264 or H.265 video codec trims with stream copy in seconds. | Camera recordings, downloads, screen captures | MP4 output |
| MKV (Matroska) | Open-source container popular for high-quality video. MKV files with any codec can be trimmed without re-encoding. | Movies, TV shows, high-quality recordings | MP4 output |
| MOV (QuickTime) | Apple's video container used by iPhone cameras and Final Cut Pro. MOV files are trimmed without quality loss. | iPhone videos, Mac recordings, Apple workflows | MP4 output |
| AVI (Audio Video Interleave) | Microsoft's legacy video container. AVI files with H.264 or DivX video trim cleanly using stream copy. | Legacy recordings, older camera formats | MP4 output |
| WEBM | Google's open web video format with VP8/VP9 codec. WEBM files can be trimmed directly without re-encoding. | Web video content, YouTube source files | MP4 output |
Who Uses Free Online Video Trimmer?
Trusted by millions of users across different industries and workflows.
Social Media Content Creators
Content creators trim longer videos to the exact maximum length allowed by each social platform — 60 seconds for Instagram Reels, 15 seconds for TikTok Stories, or 2 minutes 20 seconds for Twitter/X videos. Trimming the exact segment that fits the platform limit avoids platform auto-cropping that removes important content from the beginning or end.
Gaming Highlight Reels
Gamers extract the best moments from long gameplay recordings — clutch shots, funny moments, speed run segments, or boss fight victories — for sharing on YouTube, Twitch clips, or Discord. Stream copy trimming preserves the full original recording quality in the extracted highlight without any re-compression artefacts.
Education and Training
Educators and trainers extract specific topic segments from long lecture recordings or training videos to share with students as standalone modules. A 90-minute lecture can be broken into 10-15 minute topic segments, each trimmed precisely, for an online course platform without any quality loss between segments.
Video Editors and Post-Production
Video editors use the trimmer to quickly rough-cut segments from raw footage before importing into a full editing timeline. Pre-trimming large camera files reduces import time and project file size in editors like Premiere Pro, DaVinci Resolve, or Final Cut Pro. The zero-quality-loss stream copy output is usable in any professional NLE workflow.
Removing Intros and Outros
Content creators batch-trim intros, countdowns, pre-roll footage, or after-meeting chitchat from recorded videos. A Zoom meeting recording that starts 2 minutes early and ends 5 minutes late can be trimmed to just the relevant content segment without the awkward waiting periods at both ends.
Evidence and Documentation
Security professionals, journalists, and legal teams extract specific timestamped segments from longer recordings as evidence clips. The stream copy output maintains the original video metadata including timestamps, making trimmed segments traceable to their source recording. No re-encoding means no argument about introduced artefacts.
Why Choose Our Tool?
Built for speed, privacy, and reliability — everything works right in your browser.
Zero Quality Loss — Guaranteed
Stream copy mode is the only video trimming method that produces absolutely zero quality degradation. Every other method that re-encodes introduces some quality loss. Our tool uses stream copy by default for all supported formats, meaning your trimmed clip is identical in quality to the original source between the trim points.
10x Faster Than Re-encoding
A 30-minute video that would take 5-10 minutes to re-encode for a trim can be stream-copy trimmed in under 30 seconds. For content creators processing multiple clips daily, this time saving is substantial. The speed advantage grows with video length and resolution — 4K files benefit the most.
No Keyframe Limitation Workarounds Needed
Our server-side FFmpeg implementation handles keyframe alignment automatically. When trim points fall between keyframes (which is common), the tool adjusts to the nearest keyframe to ensure the output starts cleanly without black frames or decoding artefacts. You specify the timestamp you want; the tool handles the technical keyframe alignment.
Works With All Resolutions and Codecs
Stream copy works regardless of video resolution (SD, HD, 4K, 8K), codec (H.264, H.265/HEVC, VP8, VP9), or bitrate. You do not need to know anything about your video codec — the tool automatically detects the format and applies the correct stream copy parameters for clean, artefact-free trimming.
Pro Tips & Best Practices
Get the best results with these expert recommendations.
Use the preview player to find exact timestamps before trimming
The most common mistake when trimming is entering incorrect timestamps that cut into dialogue or action. Always use the built-in preview player to watch the video, pause at the exact first frame you want to keep, and record that timestamp as your start time. Do the same for your end frame. This prevents downloading a clip that starts or ends a second too early or late, requiring a second trim attempt.
Note that stream copy trims to the nearest keyframe
In H.264 and H.265 video, not every frame is independently decodable — only keyframes (I-frames) are. Stream copy can only start at a keyframe. If your specified start time falls between keyframes, the output will begin at the nearest preceding keyframe, which may be 1-3 seconds before your specified time. For precision editing, note the keyframe positions or use the preview player to find a clean keyframe start point.
For multiple clips from one video, trim sequentially
If you need several segments from one video — for example, three different highlights from a 2-hour recording — trim each segment separately by uploading the original file, setting the start and end times for the first clip, downloading it, then uploading again for the next clip. Each trim operation using stream copy is fast, so sequential trimming of multiple segments from a large file still completes in minutes.
Trimmed clips can be used directly in any video editor
The MP4 output from our trimmer is fully compatible with all video editing software including Adobe Premiere Pro, DaVinci Resolve, Final Cut Pro, CapCut, iMovie, and any other NLE. Since no re-encoding occurred during trimming, the trimmed clip maintains the original bitrate and quality for further editing without accumulated compression loss. Import directly into your editing timeline without any format conversion.
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Frequently Asked Questions
Everything you need to know about Free Online Video Trimmer.