Feature Dependencies

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---

Now let's add a downstream feature. We can use deps field on FeatureSpec in order to do that.

features.py, hl_lines=

import metaxy as mx
from pydantic import Field


class CroppedVideo(
    Video,  # inheritance is a good way to automatically get matching DB columns
    spec=mx.FeatureSpec(
        key="cropped_video",
        id_columns=["video_id"],
        fields=[
            "audio",
            "frames",
        ],
        deps=[Video],
    ),
):
    # additional columns
    height: int = Field(description="Height of the video in pixels")
    width: int = Field(description="Width of the video in pixels")