Can I merge AI-generated videos from Sora, Veo 3, or Runway?+
Yes. The merger accepts any standard MP4 file, including outputs from Sora, Veo 3, Runway Gen-4, Kling, Hailuo, Pika, Luma Dream Machine, and Genmo Mochi. Most AI video tools export 5–10 second MP4 clips, and stitching several together is the most common workflow for producing finished AI videos longer than the per-generation limit.
Is there a watermark on the output?+
No. The rendered MP4 has no UncensoredHub watermark, no logo overlay, and no end card. You also do not need to sign up or provide an email to use the tool or download the file.
What output resolution and format does it produce?+
The merger outputs a single MP4 file encoded with H.264 video at 720p. Audio is preserved from the source clips. We chose 720p so renders stay fast in the browser; higher resolutions are on the roadmap.
Are my videos uploaded to a server?+
Your clips stay in your browser during editing. When you click Render, files are streamed to a render worker, the MP4 is produced, and the inputs are discarded immediately after the job completes. We do not store, index, or train on your videos.
What transitions are available?+
Cut (no transition), Fade (cross-dissolve), Slide (one clip pushes the next on), and Wipe (revealing edge). Each transition has an adjustable duration in the inspector popover, typically 0.3–1.5 seconds.
What is the maximum file size or clip count?+
There is no hard cap on clip count. Individual files should stay under 200 MB for a smooth browser experience. Total project length is best kept under five minutes to keep render time reasonable.
Does the video merger work on mobile?+
Not yet. The timeline and preview panel need a desktop layout (1024px or wider). Open this page on a laptop or desktop to use the editor — the rest of this page works on any device.
Is it really free?+
Yes. The video merger is free with no usage cap, no signup, no email gate, and no watermark. UncensoredHub funds free tools through the broader AI model catalog the site hosts.
