Video metafields and asset_url warning

[ryanmcmanimie]

When working with video type metafields I receive this warning:

"Use one of the asset_url filters to serve assets for better performance."

But these files don't live in the assets folder. Bug or incorrect implementation on my end?

<source
      src="{{ section.settings.mobile_video.sources[1].url }}". <!-- warning line
      media="(max-width: 768px)"
      type="video/mp4"
>

[ryanmcmanimie]

I suppose, in retrospect, just adding file_url would mute the warning although that's not really the correct usage since you're already passing a full url to it.