Internalize custom video player example

[Josh-Cena]

Fix #9923. Still waiting on mdn/shared-assets#62, and then I need to test to fix the actual issue.

[github-actions]

Preview URLs (6 pages)

• /en-US/docs/Learn_web_development/Core/Accessibility/Multimedia
• /en-US/docs/Learn_web_development/Core/Structuring_content/HTML_video_and_audio
• /en-US/docs/Web/Media/Guides/Audio_and_video_delivery/Adding_captions_and_subtitles_to_HTML5_video
• /en-US/docs/Web/Media/Guides/Audio_and_video_delivery/Video_player_styling_basics
• /en-US/docs/Web/Media/Guides/Audio_and_video_delivery/cross_browser_video_player
• /en-US/docs/Web/Media/Guides/Audio_and_video_delivery

External URLs (3)

URL: /en-US/docs/Web/Media/Guides/Audio_and_video_delivery/Adding_captions_and_subtitles_to_HTML5_video
Title: Adding captions and subtitles to HTML video

• https://durian.blender.org/ (2 times) (Note! This may be a new URL 👀)
• https://screenfont.ca/learn/ (1 time) (Note! This may be a new URL 👀)
• https://www.blender.org/about/foundation/ (2 times) (Note! This may be a new URL 👀)

(comment last updated: 2025-09-02 15:39:56)

[bsmth]

This is 20MB, so it takes a while to load. The flower example is 1MB, so this is faster, but maybe less exciting. Plus we have some more features being shown here. Follow-up could be a loading spinner / some feedback indicator that something's happening and playback will start when the resource is ready.

[Josh-Cena]

Yeah that's a good idea. A bit tricky to do though so perhaps a follow up.

[bsmth]

Thanks, Josh. A couple of comments for you to check 👀

[bsmth]

Thanks Josh! Couple of small things to check, but ready to go when you've had a look 👀

[Josh-Cena]

Thanks @bsmth for the thorough reviews!

[bsmth]

Oh good, that's all we were missing 👍🏻