Video Tools
Trim, compress, rotate, change speed, convert to GIF/MP3, and edit subtitles — all powered by ffmpeg directly in your browser, even for large files, with no upload.
17 tools
Video → GIF
Convert MP4, MOV, WebM videos to animated GIFs. Adjustable FPS, size, and length. Files are processed in your browser and never uploaded.
Video → MP3
Extract audio from videos like MP4 and save as MP3. Useful for lectures, interviews, and music videos. Processing happens in your browser.
Video Compress
Reduce video file size by 50–80% with minimal quality loss. Solves upload size limits on messengers, email, and forums.
Video Trim
Cut out the section of a video you want. Set start and end points with sliders. Lossless fast cutting (stream copy method).
Subtitle SRT/VTT Editor
Convert between SRT and VTT subtitle files and shift timing by an offset to fix sync. Extract plain text too.
Video Editor (All-in-One)
Trim, rotate, flip, change speed, mute, resize, and compress in a single tool. Combine multiple edits in one ffmpeg.wasm pass to minimize quality loss.
GIF → MP4
Convert animated GIFs to MP4 video. File size typically drops 70–90% with universal platform compatibility. Useful for autoplaying MP4 instead of GIF on blogs and webpages, when GIFs won't send through KakaoTalk, and for posting light videos to Twitter/X instead of heavy GIFs.
Video Rotate
Straighten sideways videos or flip them horizontally/vertically. Based on ffmpeg.wasm, with audio kept intact. Useful for fixing videos shot vertically but saved sideways, creating mirror effects, and batch-fixing videos with bad rotation metadata.
Video Thumbnail
Save a still frame from any video moment as PNG. Useful for making YouTube thumbnails, capturing lecture slides, citing movies or news clips, and pulling SNS preview images.
Video Speed
Slow down or speed up video playback. Useful for fast-listening to lectures at 1.5–2x, slow-motion analysis of golf swings and workouts, compressing cooking videos, and breaking down dance choreography. Based on ffmpeg.wasm.
Audio Trim
Cut a segment from MP3, WAV, M4A, OGG, and other audio files. Fast lossless cutting via ffmpeg.wasm. Great for grabbing a chorus, pulling quotes from lectures or podcasts, making ringtones and alarms, and keeping only the key part of a meeting recording.
Video Merge
Join multiple videos in sequence into one file. Powered by ffmpeg.wasm — same codec recommended. Useful for combining clips you split while filming on a phone, joining lecture series, or building wedding highlight reels.
Video Mute
Completely remove sound from a video. ffmpeg copies only the video stream — fast, with no quality loss. Useful for removing noisy backgrounds, stripping copyrighted music, and creating silent video clips for SNS or GIFs.
Video Info
Show a video's resolution, length, file size, duration, and basic info. Useful for checking specs before upload, prepping for edits, verifying SNS attachment limits, and deciding which tool to use.
Video Resize
Convert videos to 360p, 720p, 1080p, or 4K. Useful for reducing 4K to 720p for KakaoTalk attachments, making mobile-friendly versions, and shrinking lecture videos for data savings.
Audio Merge
Join multiple audio files in order into one. Useful for combining multi-session lecture recordings, music medleys, podcast intro/main/outro bundles, and split meeting recordings.
Audio Volume
Boost or lower audio in decibel (dB) units. Useful for raising too-quiet lecture recordings, lowering loud mic input, and matching volume across multiple audio files.