keep video html5 tags valid in markdown

[laoshaw]

at the moment the video-html5-tag is removed from markdown when it's rendered to html5 page, can we keep it so that we can embed video files directly in markdown and watch it from gitea?

[stale]

This issue has been automatically marked as stale because it has not had recent activity. It will be closed if no further activity occurs during the next 2 weeks. Thank you for your contributions.

[uberhalit]

It seems like it's not possible to embed a video in markdown. The workaround is pretty bad tbh and does not work as intended with local files: [![video](data/thumbnail.png)](data/video.mp4) won't link to the raw video but instead to the gitea page of the video resource. Workaround to the workaround:
[![video](data/thumbnail.png)](../../../raw/branch/master/data/video.mp4)

[6543]

@laoshaw can you test if this is still the case?

[laoshaw]

[![video](data/thumbnail.png)](data/video.mp4) will jump to a new gitea page and you can play video.mp4 from there, so not direct embed video in gitea but a workaround.

for [![video](data/thumbnail.png)](../../../raw/branch/master/data/video.mp4) it does not jump to a new page, instead it downloads the file directly.

the best still will be "video" tag support, before then I will use the first option here to get by.

[wxiaoguang]

After #22892 , the tag is kept.