OPFS mode: videos are streamed from browser storage and mounted read-only in FFmpeg, so the import size limit does not apply.
Auto-estimate durations
After a settings change, estimate each output duration without rendering.
Videos
Each video can override the global settings.
0
Drag & drop your videos here
Browse files
Stored locally in your browser with OPFS — no import size limit.
No videos yet. Add a few clips to cut their silences.
Clip
One file at a time.
Drag & drop a video here
Browse files
Stored locally in your browser with OPFS — no import size limit.
Video
One file at a time.
Drag & drop a video here
Browse files
Stored locally in your browser with OPFS — no import size limit.
Clips
Drag a row, or use the arrows, to change the order.
0
Drag & drop your videos here
Browse files
Everything stays on this device.
Total duration00:00:00
No clips yet. Add videos to build a collage.
Videos
Each video is rendered separately.
0
Add an introOptional · played before each video
Add an outroOptional · played after each video
Drag & drop your videos here
Browse files
Everything stays on this device.
No videos yet. Add clips, then give them an intro and an outro.
Segments
Set a start and an end for every segment.
0
Drag & drop a video here
Browse files
Everything stays on this device.
Long videos, still 100% local
Bulkut Pro keeps imports in OPFS, the browser's private storage, and streams them from there into FFmpeg. The import size limit of a normal page no longer applies, and nothing is uploaded.
Free, no ads, no account.
The same six tools as the standard page.
Stored in your browser and deletable at any time.
Need more? The desktop build reads straight from disk with no size limit.