What video editing features are available in this online editor?

The video editor supports essential editing operations: trim/cut videos to remove unwanted sections, merge multiple video clips into one, compress videos to reduce file size, convert between formats (MP4, WebM, MOV, AVI), adjust playback speed (slow motion or time-lapse), crop videos to change dimensions or aspect ratio, rotate and flip videos, extract audio tracks, mute or replace audio, and add basic effects like brightness, contrast, and saturation adjustments. All editing happens in your browser using WebAssembly and Canvas APIs—no server upload, ensuring complete privacy. The editor handles videos up to several GB depending on your device's available RAM.

What video formats can I upload and export?

Input formats supported include MP4 (H.264/H.265), WebM (VP8/VP9), MOV (QuickTime), AVI, MKV, and MPEG. MP4 with H.264 codec is the most universally compatible format, working on all devices and platforms. For export, you can choose MP4 (best compatibility), WebM (smaller file size, web-optimized), or MOV (high quality for further editing). Select video codec (H.264 for compatibility, H.265 for better compression) and audio codec (AAC for quality, MP3 for compatibility). Browser support depends on installed codecs—Chrome and Edge support more formats than Safari. If your browser can play the video, the editor can process it.

How do I compress videos to reduce file size?

Video compression works by reducing resolution, bitrate, or changing codecs. Lower the resolution from 4K (2160p) to 1080p, 720p, or 480p—resolution has the biggest impact on file size. Reduce bitrate (measured in Mbps) to compress further, but too low causes quality loss. Switch to H.265/HEVC codec which compresses 25-50% better than H.264 but requires more processing power. Adjust frame rate from 60fps to 30fps for significant size reduction without noticeable quality loss in most content. For extreme compression, convert to WebM with VP9 codec—smaller files than MP4 but less universal compatibility. The editor shows estimated output size before processing so you can balance quality vs file size.

Can I trim videos precisely to specific timestamps?

Yes! Use the timeline scrubber to visually select start and end points, or enter precise timestamps in hours:minutes:seconds format (e.g., 00:01:23 to 00:03:45). Frame-accurate trimming is supported—step through frame-by-frame using arrow keys to find exact cut points. Trim from the beginning, end, or cut out middle sections. For multiple trims, cut once, export, then load and trim again, or use the merge feature to combine multiple trimmed segments. Trimming is non-destructive—your original video file remains unchanged. The editor re-encodes only the selected portion, making the process fast even for long videos.

How do I merge multiple video clips into one video?

Upload multiple video files, arrange them in the desired order using drag-and-drop, then click merge. The editor concatenates clips sequentially into a single output video. For best results, use videos with matching resolution and frame rate—the editor can auto-convert mismatched videos but this takes longer. Add transitions between clips (fade, dissolve) if the editor supports it, or export a simple concatenation. Audio tracks from all clips are merged in sequence. If clips have different aspect ratios (e.g., mixing 16:9 and 4:3), choose how to handle the mismatch: letterbox (black bars), stretch (distorts video), or crop to fit. Merged videos export in your chosen format.

Is my video data secure when using this browser-based editor?

Absolutely! All video processing happens entirely in your browser using JavaScript, WebAssembly, and Canvas APIs. Your video files are never uploaded to any server, transmitted over the internet, or stored anywhere except temporarily in your browser's memory during editing. This makes it completely safe to edit personal videos, confidential business content, or private footage. Once you close the browser tab or complete editing, all data is immediately cleared from memory. No server logs, no data retention, complete privacy. Always verify client-side processing by checking network activity in browser developer tools—you'll see zero upload traffic during editing.

Can I adjust video speed for slow motion or time-lapse effects?

Yes! Change playback speed from 0.25x (slow motion) to 4x or higher (time-lapse). Slowing down to 0.5x creates smooth slow-motion effects—ideal for sports, tutorials, or dramatic scenes. Speeding up to 2x or 4x creates time-lapse effects—great for long processes, travel videos, or condensing content. The editor can either adjust video duration (2x speed makes a 10-minute video 5 minutes) or maintain duration by dropping/duplicating frames. Audio pitch can be preserved (chipmunk effect at high speeds) or adjusted to maintain natural sound. Note that slowing down standard 30fps video may appear choppy—high frame rate source footage (60fps+) produces smoother slow motion.

How do I extract audio from videos or replace the audio track?

To extract audio, upload your video and select audio-only export format (MP3, AAC, WAV, or OGG). The editor extracts the audio track and lets you download it separately—useful for saving music, podcasts, or voice recordings from video files. To replace audio, mute the original video track, then use editing software to overlay new audio, or upload a new audio file if the editor supports audio merging. Some editors allow audio adjustments: increase/decrease volume, fade in/out, or normalize audio levels to prevent clipping. Extracted audio quality depends on the original video's audio bitrate—typically 128-320 kbps for most videos.

What resolution and frame rate options are available?

Resolution options typically include 4K (3840x2160), 1440p (2560x1440), 1080p (1920x1080), 720p (1280x720), 480p (854x480), and 360p (640x360). Higher resolutions produce sharper videos but larger file sizes. Frame rate options include 24fps (cinematic), 30fps (standard), 60fps (smooth motion), and sometimes 120fps or higher. Match your output resolution to your upload platform: YouTube supports up to 8K, Instagram requires square (1080x1080) or vertical (1080x1920), TikTok prefers 1080x1920 vertical. Upscaling (increasing resolution) doesn't add detail—export at source resolution or lower. Downscaling (decreasing resolution) reduces file size with minimal quality loss.

Can I edit videos on mobile devices or do I need a desktop computer?

Browser-based video editors work on both desktop and mobile, but performance varies significantly. Desktop/laptop computers with 8GB+ RAM handle videos up to several GB and export faster thanks to more processing power. Mobile devices (phones, tablets) can edit short videos (under 1-2 minutes or 500MB) but struggle with large files due to limited RAM and processing power. iOS Safari and Android Chrome support video editing, but some advanced features (certain codecs, high resolutions) may not work. For basic edits (trimming, simple format conversion), mobile works fine. For complex edits, merging long videos, or 4K processing, use a desktop. The editor automatically detects your device and may limit features on mobile to prevent crashes.

Online Video Editor

Edit, trim, cut, merge, compress, and convert videos in your browser. Support for MP4, WebM, MOV formats with no upload required and complete privacy.

Drop your video here

Supports MP4, WebM, OGG, MOV, AVI files (max 100MB)

Frequently Asked Questions

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