How to Remove Watermarks, Subtitles & Objects from Videos on Mac

Wondershare UniConverter 18 for Mac provides AI-powered tools to remove unwanted watermarks, burned-in subtitles, and moving objects from videos. With its upgraded AI Eraser, you can select specific areas, preview removal results, and process multiple videos with less manual editing. Follow this guide to learn how to remove unwanted elements from videos on your Mac.

Part 1: Introduction

The AI Eraser in Wondershare UniConverter 18 offers two main removal options: Fixed Area for watermarks, logos, and burned-in subtitles, and Moving Object for unwanted elements that move across the video.

For fixed areas, Ultra AI provides Whole Area and Subtitles options, alongside Advanced and Basic removal modes. You can also preview removal results before exporting and process multiple selected video files in a batch.

Part 2: How to Remove Burned-In Subtitles from Videos on Mac

Step 1 Open Video Subtitle Remover.

Launch Wondershare UniConverter 18 on your Mac. On the Home screen, go to Enhance & Clean Up under Explore to locate the video cleanup tools.

Select Video Subtitle Remover to open the AI Eraser workspace.

Step 2 Import a video and select Ultra AI Subtitles mode.

In the AI Eraser workspace, keep Video Eraser selected and click Add File to import a video containing burned-in subtitles. You can also drag and drop a supported video file into the workspace.

On the right, select Fixed Area. Under Remove Mode, choose Ultra AI and switch to Subtitles. This mode is designed to remove subtitle text within a selected region while helping preserve other visual content.

Step 3 Select the burned-in subtitle area.

Move the playhead to a frame where the subtitles are visible. Under Select Target Area, click Select Area and draw a rectangular box around the subtitle region.

The selected region appears in the video preview and is listed in the right-side panel with its time range. Adjust the box to cover the subtitles without including unnecessary areas of the video.

Step 4 Preview the subtitle removal result.

Click Preview 3s to generate a short preview of the processed video. Review the result to see whether the selected subtitles have been removed while the surrounding content remains natural.

Click Exit Preview when finished. If any subtitle text remains visible, refine the selected area and preview again before exporting.

Note: Generating previews with Ultra AI may consume AI credits. Check the estimated credit usage before processing.

Step 5 Remove subtitles and export the video.

Choose an output location under Save to and review the estimated AI credits. Click Remove & Export to begin removing the subtitles from the video.

UniConverter displays an Exporting progress window while processing the file. Wait until the task finishes to access the processed video in the selected output folder.

Part 3: How to Remove Video Watermarks on Mac

Besides burned-in subtitles, Wondershare UniConverter 18 can remove fixed watermarks, logos, and other unwanted on-screen elements. The Whole Area option in Ultra AI is designed to process a selected watermark region.

Step 1 Open Video Watermark Remover.

Launch Wondershare UniConverter 18 on your Mac. From the Home screen, select Video Watermark Remover to open the AI Eraser workspace.

Step 2 Import a video and mark the fixed watermark.

Click Add File to import a watermarked video. On the right-side panel, select Fixed Area, choose Ultra AI under Remove Mode, and keep Whole Area selected.

Click Select Area and draw a box around the watermark, such as a fixed logo in the corner of the video. Make sure the selection covers the full watermark without unnecessarily extending into the surrounding content.

Step 3 Preview the watermark removal result.

Click Preview 3s to check the removal result. Compare the preview with the original video to see whether the selected watermark has been removed and the surrounding details have been preserved.

Click Exit Preview to return to the AI Eraser workspace. If necessary, adjust the selected watermark region and preview again.

Step 4 Export the video without the selected watermark.

After reviewing the preview, choose the output destination under Save to and click Remove & Export.

UniConverter starts the AI removal process and displays an export progress window. Wait for processing to finish before opening the exported video.

Part 4: How to Batch Remove Watermarks from Videos on Mac

UniConverter 18 supports importing and processing multiple videos in the AI Eraser workspace. This can save time when several videos contain unwanted watermarks or subtitle overlays.

Step 1 Add multiple videos and select files.

Click Add Files to import additional videos into the workspace. The imported videos appear as thumbnails along the bottom of the interface.

Use Select All to select every imported video, or use the individual checkboxes to choose specific files. Review the removal settings and selected target areas for each video.

When applicable, use Apply to All Files to apply compatible target-area settings to multiple files. Check that the selected area matches the unwanted content in each video before exporting.

Step 2 Batch remove watermarks and export the videos.

Once the target areas and removal modes have been configured, review the estimated AI credits and choose an output destination under Save to.

Click Remove & Export to process the selected videos. UniConverter displays a batch export progress window showing the processing status and number of files being processed.

Note: Apply to All Files is most useful when the videos share compatible watermark positions and removal requirements. Videos with different watermark locations may require separate target-area selections.

Part 5: How to Remove Moving Objects from Videos on Mac

For unwanted elements that move through a video, Wondershare UniConverter 18 provides a separate Moving Object mode. Instead of drawing a fixed rectangular selection, you can use the Brush tool to mark the unwanted object.

Step 1 Open Video Object Remover.

Launch Wondershare UniConverter 18 on your Mac. On the Home screen, go to Enhance & Clean Up and select Video Object Remover to open AI Eraser.

Step 2 Import a video and mark the moving object.

Import a video containing the unwanted moving object and switch to the Moving Object tab.

Choose Brush and paint over the object you want to remove from the video preview. For example, you can mark an unwanted bird or another moving element in the scene.

Adjust the brush size using the slider to cover the target accurately. If the selection includes unwanted areas, use Deselect or the undo controls to refine the selection.

Step 3 Preview the moving object removal result.

Click Preview 3s to generate a short preview. Review the processed clip to check whether the unwanted moving object has been removed while the surrounding background remains visually consistent.

Click Exit Preview to return to the workspace. If the removal result needs improvement, adjust the brush selection and preview again.

Step 4 Remove the moving object and export the video.

Once you are satisfied with the preview, choose an output destination under Save to and review the estimated AI credits.

Click Remove & Export to process the video. UniConverter displays an Exporting window showing the task progress. Wait for the processing to complete before opening the video from the destination folder.

Note: AI removal results and processing time vary depending on video resolution, background complexity, object movement, removal mode, and device performance. Preview the result before exporting, especially when removing objects from detailed or fast-moving scenes.