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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
Contents
Example 1
Example 1
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
| Hours | Minutes | Seconds | Frames |
| 10 | 00 | 00 | 00 |
If our video is 10 minutes long, the end timecode will be 10:10:00:00:
| Hours | Minutes | Seconds | Frames |
| 10 | 10 | 00 | 00 |
Media Object Timeline
Our media object timeline must therefore be:
| Start timecode | 10:00:00:00 |
| End timecode | 10:10:00:00 |
| Duration (timecode) | 00:10:00:00 |
| Duration - Frames @30fps | 18,000 |
Review
All annotations must fit within this media object timeframe. Here are a few examples for review:
| 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 |
Example 2
In our second example, we have a start timecode of 13:24:06:00
| 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:
| Hours | Minutes | Seconds | Frames |
| 14 | 38 | 34 | 00 |
Media Object Timeline
Our media object timeline must therefore be:
| Start timecode | 13:24:06:00 |
| End timecode | 14:38:34:00 |
| Duration (timecode) | 1:14:28:00 |
| Duration - Frames @30fps | 134,040 |
Review
All annotations must fit within this media object timeframe. Here are a few examples for review:
| 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