Discrepancy between Metadata and Web Visualizer

Ego4D Feedback
1

Hi colleagues,

I found there might be some discrepancies between Metadata and Web Visualizer, at least for gaze data.

I read the latest Metadata ego4d.json from CLI, and downloaded the video ids filtered by modalities include gaze. Specifically, please check the screenshots attached.

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However, the web visualizer told me this video has gaze data.

It seems the Metadata is more reliable as I checked the gaze datasets, there is no corresponding csv file.

2

I found that the egp4d.json aligns with the filtering results in the visualizer specified as v2, which is also annotated within the file. Here comes the following questions:

  1. How can we download the Metadata v1?
  2. How can we download gaze v1 datasets? I tried
    python -m ego4d.cli.cli --output_directory="*" --datasets imu gaze --version v1 --yes
    The gaze data downloaded is the same as those in v2.

As I mentioned in another post, there should be 2293 videos with gaze in v1.

3

Is there a metafile that has complete information for all the latest available videos?

For example, the video i was released in v1, and i still exists in v2. The metafile should present i has_gaze==True.