How to add a watermark to a video on Mac
Updated 2026-07-10 · Runs locally — nothing uploaded
Select a PNG logo or type text, choose its position and opacity, preview it, then confirm; FFmix overlays it locally on every selected video.
- Output
- MP4 with positioned watermark
- Processing
- On your Mac
- Setup
- About 2 minutes to set up
- Access
- Free local task
A useful watermark workflow is visual before it is technical. FFmix gives you a nine-position grid, margin and opacity controls, plus a live preview. Image and text marks share the same overlay pipeline; text is rendered locally to a transparent image so the command remains portable across ffmpeg builds.
Watermarking changes the pixels and therefore re-encodes the video, but FFmix keeps the audio stream when possible. For a series, select every file first: the same settings become separate, visible queue jobs rather than a black-box batch upload.
Steps
- 1 Drop the video into FFmix and choose Add watermark.
- 2 Choose a transparent PNG or enter watermark text.
- 3 Set one of nine positions, opacity and edge margin while checking the preview.
- 4 Review the overlay command and confirm to create a new marked MP4.
Advanced: canonical ffmpeg recipe
This is the canonical recipe. FFmix adapts encoder flags to the engine on your Mac, then shows the final command; the command shown is the command run.
ffmpeg -i "input.mp4" -i "logo.png" -filter_complex "[1]format=rgba,colorchannelmixer=aa=0.80[wm];[0][wm]overlay=main_w-overlay_w-24:main_h-overlay_h-24" -c:a copy "input-marked.mp4"Drop a file and go — all local, nothing uploaded.
FAQ
Can I add a text watermark instead of an image?
Yes. FFmix renders the text into a transparent local image, then uses the same predictable overlay pipeline as a PNG logo.
Does FFmix preserve the audio?
Yes. The watermark changes the picture, so video is re-encoded, while the audio stream is copied when compatible.
Can I apply the same watermark to several videos?
Yes. Select multiple files, set the watermark once and queue one local job per video.