I am not from the Jira team but I will try to help.
Are you using Jira Cloud or Jira Server?
I know that on Jira Cloud if you add a video attachment to a Jira Issue then a thumbnail should be automatically generated for you.
I suspect if you try to do the same in Jira Server you will get similar behaviour.
Ie. instead of using the wiki markup just drag-and-drop or add an attachment.
I hope that helps!
Hi , you could also try Nexonic Artify mobile apps (both IOS and android) -- this app allows screen recording and natively upload recorded video to a JIRA ticket (search or create)
on Top user can annotate a uploaded video with in their JIRA cloud plugin - please find details here
IOS app listing
Please let us know if you need any further details -- thanks
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