Fix for #20

[cardboardcode]

Purpose of Pull Request 🔖

This aims to fix the issue highlighted in #20 which was reproducable by doing the following:

Steps To Reproduce 📚

1. Download rosbag2video:

cd $HOME

git clone https://github.com/mlaiacker/rosbag2video --depth 1 --single-branch --branch master && cd rosbag2video

2. Ensure you have <ros1_bag_file_name> in the root of the repo.

3. Run ROS 1 rosbag2video.py script:

source /opt/ros/noetic/setup.bash && python3 rosbag2video.py -t <ros1_image_topic_name> <ros1_bag_file_name>

4. Run Step 3 again.

The cause of issue was determined to be due to having the output video file of the same name present after the first generation.

Summary 📑

• Implement feature that automatically generates unique timestamps and appends it to the output video file name.

Remarks 💬

@mlaiacker May I get your help to do a quick 15 minute review and approve if you have the time?