This example stars Sophie, aged 3 3/4 and if you play the video our mark up will appear.
The example is in "update mode" so pausing will show all the start and end positions. You can also add new markers and your own comments to this video, or paste a valid YouTube link in the text box above to try your own.
When you drag items (assets) onto the video each will have a start and end time.
You can then position them as required, and then on playback they will start and finish in synchronization with your video.
The marker will then follow the trajectory in time with the video, with your comments or supporting media