How to add a channel logo overlay to a youtube video
- Step 1Drop your video and watermark image — Drop your video and watermark image
- Step 2Set position, opacity, and size — Pick position (corners, centre) and opacity
- Step 3Export watermarked video — JAD composites via WebGPU and re-encodes via hardware
Frequently asked questions
What image format should I use for my watermark?+
PNG with a transparent background is the standard choice — it supports full alpha transparency so the watermark blends naturally over any background. SVG is also supported and scales crisply without pixelation at any output resolution. Avoid JPEG for watermarks as it does not support transparency and introduces compression artefacts at watermark edges.
How do I make my watermark semi-transparent?+
Set the opacity slider in the watermark engine. An opacity of 100% makes the watermark fully opaque; 30–50% is typical for subtle corner branding; 70–80% is standard for visible copyright protection. The opacity is applied via FFmpeg's format=argb and scale2ref filters, which blend the PNG alpha channel at the specified level over the video.
Can I add a watermark to a 4K video without losing quality?+
Yes — JAD composites the watermark at the output resolution, preserving full 4K quality. The overlay filter scales the watermark to the specified dimensions and positions it in the output encode. If you need to preserve the original codec without re-encoding, note that watermark compositing requires a full encode pass (unlike lossless trim). Select a high CRF value (CRF 18–22 for H.264) to maintain quality.
Privacy first
All video processing runs locally in your browser using WebAssembly and FFmpeg. No file is ever uploaded — only metadata counters are saved for signed-in dashboard stats.