01 / Open
Pick one video from your computer, or use our generated test clip.
FILMCRAFT v0.6.0 · WEBASSEMBLY
FilmCraft Online Video Editor
Edit a local video with FilmCraft in your browser. Preview, trim a clip and export an MP4 with its audio. Free to use, with no account or installation.
Desktop first · Start with a short H.264 MP4. Encoding runs in your browser and can take several minutes. Keep this tab open.
Desktop first. Use Chrome on a computer for the timeline. Mobile editing has not been accepted.
Start with one clip
No account. No installation. Open the official editor to begin.
Ready when you are. The editor loads only when you open it.
Trim a local clip and download an MP4
FilmCraft Online is an independently hosted browser video editor based on open-source FilmCraft v0.6.0. It is useful for previewing one local video, shortening its timeline and downloading an H.264 MP4 with the original audio.
Free import, editing and MP4 download. No login or payment.
02 / Edit
Preview the sequence and shorten it. The full FilmCraft timeline is also available.
03 / Export
Encode an MP4, then check its picture and sound in the result player.
The self-hosted engine reads local files in the browser. It may cache imported media in browser storage (OPFS). Clear site data to remove these copies.
Encoding is single-threaded and may be slow. Long videos, large files, 4K, joining clips and full mobile editing are not verified.
Quick import requires a video this browser can decode. H.264 MP4 is the tested input.
The page is available in English and Chinese. The embedded editor is shown in English.
A real input-to-output example
Self-generated test video: 1280×720, 30 fps, H.264 video and a 440 Hz AAC tone. We trimmed 10 seconds to 5 seconds in FilmCraft v0.6.0 and checked the downloaded MP4 in an independent player and with ffprobe. Verified 12 October 2026. This demonstrates the tested short-clip workflow, not unlimited file size or length.
Before you edit
Which output format is used?
Quick export creates an MP4 with H.264 video and AAC audio. Landscape 1280×720 and portrait 360×640 short clips were exported and independently played on 12 October 2026. Other codecs are not a compatibility guarantee.
Does trimming keep the sound?
Yes, the tested H.264/AAC clips retained their source audio after trimming. Mono audio can become stereo. We do not generate speech or music. Check the picture and sound in your exported file; speech lip-sync and arbitrary audio formats have not been verified.
Are my videos sent to a server?
Your selected media is read and encoded in the browser, not uploaded to our servers. The upstream editor may cache local copies in browser storage. Clear this site’s browser data to remove those copies. The site loads editor assets over the network.
How large can a video be?
No site-wide size or duration limit has been verified. Start with a short clip; browser memory and software encoding can limit the session.
Can I use my phone or Safari?
Use desktop Chrome first. Safari 26.5.2 passed a short sample trim and MP4 export; its full input/error matrix is unverified. Touch editing is not verified. The page supports English and Chinese, while the embedded editor is shown in English.
What if export fails?
Keep the tab open and read the error. Your timeline stays available. Try a shorter clip after the active job finishes. Restarting discards the current session.
Is editing and downloading really free?
Yes. Importing, editing, exporting and downloading on this site are free. No account, card, subscription or credits are required. This is a local video editor, not a paid AI video-generation service.