What is a Media Object Timeline 👩‍🎓

Each spatial annotation will have a timestamp that fits within a media object timeline, which is the span of the first and last frames. In this guide, we will explain how that works.

👩‍🔬Prerequisite knowledge: to make the most of this guide it will help to be familiar with record media and timecodes

As n example, let's say we have a video with no start timecode (Timecode of first frame), this will default to 10:00:00:00 in Imagen:

👩‍🎓Pro tip: "Timecode of first frame" is used to describe the start timecode. Media info can be used to find this timecode

Start Timecode
Hours	Minutes	Seconds	Frames
10	00	00	00

If our video is 10 minutes long, the end timecode will be 10:10:00:00:

End Timecode
Hours	Minutes	Seconds	Frames
10	10	00	00

Our media object timeline must therefore be:

All annotations must fit within this media object timeframe. Here are a few examples for review:

Annotations
10:05:00:00	Good	Inside timeline
10:06:17:04	Good	Inside timeline
11:05:00:00	Bad	1 hour after the end of the video
10:10:30:00	Bad	30 seconds after the end of the video

In our second example, we have a start timecode of 13:24:06:00

Start Timecode
Hours	Minutes	Seconds	Frames
13	24	06	00

If our video is 1 hour, 14 minutes and 28 seconds long, the end timecode will be 14:38:34:00:

End Timecode
Hours	Minutes	Seconds	Frames
14	38	34	00

Our media object timeline must therefore be:

All annotations must fit within this media object timeframe. Here are a few examples for review:

Annotations
13:44:00:12	Good	Inside timeline
14:01:59:13	Good	Inside timeline
14:44:34:16	Bad	6 minutes and 16 frames after the end of the video
14:38:35:00	Bad	1 second after the end of the video

📕Further reading: Follow this link to find out more about adding Annotations