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Higher-res YouTube thumbnails #1227

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twm opened this issue Oct 1, 2024 · 1 comment

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twm commented Oct 1, 2024

https://tools.simonwillison.net/youtube-thumbnails?url=CRpHNB87gRY shows several higher-res endpoints than the https://i.ytimg.com/vi/CRpHNB87gRY/mqdefault.jpg Yarrharr currently injects.

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twm commented Feb 8, 2025

As the current implementation notes the higher-resolution maxresdefault.jpg isn't always available. When it's not the result is a 404.

A few options I see:

On the frontend, use an <img onerror> handler to fallback from maxresdefault.jpg to hqdefault.jpg. Probably do this with a web component?
Sniff which image is available at sanitization time and embed the correct URL.
Rewrite to a proxied URL (provided by Yarrharr) that does the fallback internally.

The first has the additional benefit that it provides an extension point for allowing playback.

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