Feature Type

Adding new functionality to rosbags2video

Problem Description

Often there's only one Image topic in a bagfile, but you don't know its name off the top of your head.

Feature Description

Provide a command line option (--auto-topic ?) to automatically detect and use the Image topic in the bagfile, if there is only one Image topic.

Fail if there is more than one Image topic, but list the Image topics in the bagfile.

Do not make this an automatic option -- maintain the current behavior of failing if either "automatic" or a specific topic are not specified.

Alternative Solutions

Continue to use rosbag info or write a separate tool which just lists the topics in a bag?