FFmpeg Window

FFmpeg camera viewer window.

Overview

In the screenshot above, the left panel lists available video topics, while the right panel renders selected streams in a grid. A column slider controls how many streams appear per row.

Layout

• Topic list: remote topics (from the active connection) and local topics (published on the GUI machine).

• Grid controls: slider to set the number of columns in the video grid.

• Video tiles: one tile per selected topic, rendered with a fixed aspect ratio.

Controls and Indicators

• Refresh topics repopulates the topic list from the connection and local publishers.

• Checkboxes create or remove camera widgets for each selected stream.

• Video column slider adjusts the grid layout from 1 to 3 columns.

Data Sources

• Remote topics support raisin_interfaces::msg::FfmpegPacket and sensor_msgs::msg::Image.

• Local topics are discovered through the local publisher registry.

Notes

• Remote topics require an active connection; local topics do not.

• Use fewer columns for larger previews when inspecting fine detail.