6-IN-1 LOCAL VIDEO TOOL
Choose · Import · Export
STEP 1 · CHOOSE A TASK
Drop a video here to start editing
Popular formats · 1.5 GB max
Choose a local video or audio file to compress, convert, trim, center-crop, rotate, flip, change speed, mute, extract a frame, extract audio, or burn subtitles. Video jobs can keep source dimensions or limit the long edge to 1080, 720, or 480 pixels without upscaling. The page reports actual source and generated durations, dimensions, and file sizes. The current browser processes the file with ffmpeg.wasm; it is not uploaded to the GlobalCoreHub application server.
BEST FOR
Creators, marketers, designers, and everyday users preparing video or audio for web publishing, social sharing, messaging, presentations, or archives.
Choose a local audio or video file up to 1.5 GB
Choose compression, conversion, editing, frame extraction, audio extraction, or subtitle burning; set a video job's output long edge when needed
Start the task and let the browser load ffmpeg.wasm only when needed
Preview the generated file, verify actual format, size change, duration, and dimensions, then download it
No. The current browser writes the media into ffmpeg.wasm's in-memory file system and processes it locally; this tool does not upload it to the GlobalCoreHub application server. On the first task, the browser downloads ffmpeg core resources from a public CDN as needed.
Video compression, editing, and subtitle burning produce MP4. Format conversion can produce MP4, WebM, or GIF. Frame extraction produces PNG or JPEG. Audio extraction can produce MP3, WAV, or M4A. MP4 and WebM can keep source dimensions or cap the long edge at 1080, 720, or 480 pixels; GIF is fixed at 12 fps and capped at a 720 px long edge. An input still needs a codec and container that the engine can decode.
Set a start and end time in seconds, choose a 16:9, 9:16, 1:1, or 4:5 centered crop, rotate or flip the image, choose 0.5×, 1×, 1.5×, or 2× speed, or remove its audio. Editing always creates a new MP4 and does not overwrite the source file.
After you select a file, the page reads its browser media metadata for duration and video dimensions. Once output is created, it compares the generated byte size with the source and reads the preview's metadata to display its duration and dimensions.
The browser needs to download and start ffmpeg.wasm core resources before it can write your local file and transcode it. The page reuses the started engine for later tasks in the same session.
Yes. Cancelling terminates the current browser worker and clears unfinished output. Starting another task then needs to start the local engine again.
GlobalCoreHub runs the core All-in-One Video Tool workflow in the current browser. Tool input is not uploaded to the GlobalCoreHub application server; any local saving described on this page stays in the current browser until its site data is cleared.