Media tools
Video Trimmer
Cut a selected time range from a local video and download an MP4 with sound when the source has an audio track.
Choose your clip
Your file is processed in your browser and is not uploaded to ToolPixels.
About the MP4 export
The selection is re-encoded as H.264 video with AAC audio in an MP4. Output fits within 1280 × 720, preserves the aspect ratio and does not upscale. Re-encoding may change quality. Subtitles, extra audio tracks and metadata are not retained.
Compatibility and limits
The source must play in your browser. The single-thread FFmpeg WebAssembly engine is downloaded only when you start an export (about 31 MiB, then browser-cached). It runs in a worker without cross-origin isolation headers. Exports can take longer than the selected clip, especially on phones. Cancel releases the video engine; very slow exports time out after 150 seconds.
Use short files in a current browser. Keep the tab open until the download is ready. A file extension does not guarantee a supported codec. Damaged, encrypted or unusually encoded files may fail.
Video processing uses FFmpeg WebAssembly. See the engine version, license and source information.