# 自 3.2.0.beta3 起视频预览不再显示

**URL:** <https://meta.discourse.org/t/video-previews-no-longer-show-up-since-3-2-0-beta3/285303>\
**Category:** Support\
**Created:** [2023年十一月13日 11:32 UTC](https://meta.discourse.org/t/video-previews-no-longer-show-up-since-3-2-0-beta3/285303 "2023-11-13T11:32:50Z")\
**Posts on this page:** 1\
**Showing post:** 2

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**Author:** ![JammyDodger](https://sea3.discourse-cdn.com/meta/user_avatar/meta.discourse.org/jammydodger/32/254611_2.png) [@JammyDodger](https://meta.discourse.org/u/JammyDodger)\
**Post date:** [2023年十一月13日 12:03 UTC](https://meta.discourse.org/t/video-previews-no-longer-show-up-since-3-2-0-beta3/285303/2 "2023-11-13T12:03:54Z")

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最近在 #Support 主题中提出了这个问题：

> [@Video thumbnails not generated for uploaded videos in Discourse forum](https://meta.discourse.org/t/video-thumbnails-not-generated-for-uploaded-videos-in-discourse-forum/283524):
>
> Does Discourse automatically generate video thumbnails for uploaded videos? By default, Discourse does not automatically generate video thumbnails for uploaded videos. However, the Insert Video (theme component) plugin does generate video thumbnails automatically. Is there a way to enable Discourse to automatically generate video thumbnails for uploaded videos by default? Note: The Insert Video (theme component) plugin currently only works with MP4 videos. Support for mov, ogg, webm videos is …

我认为这是此 PR 的更改：

> <https://github.com/discourse/discourse/pull/23807>
>
> Preloading just metadata is not always respected by browsers, and
> sometimes the …whole video will be downloaded. This switches to using a
> placeholder image for the video and only loads the video when the play
> button is clicked.

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