Interesting that you mention closed captions, because for me they're not working in Firefox, at least not in this video: https://commons.wikimedia.org/wiki/File:%C2%BFQu%C3%A9_es_Wikipedia%3F.ogv. But they do work in IE. Can you check to see if you can get CC working for you in Firefox in that video? If not, I'll file a Phabricator bug or +1 if it's been reported already.

Pine

On Tue, Jul 12, 2016 at 9:28 AM, Brian Wolff <bawolff@gmail.com> wrote:
What about abusing the closed captions feature. I believe it supports links.

--
bawolff


On Tuesday, July 12, 2016, Brion Vibber <bvibber@wikimedia.org> wrote:
> Not at this time, no. It's on my list of things to be able to eventually add.
> -- brion
> On Mon, Jul 11, 2016 at 8:38 PM, Pine W <wiki.pine@gmail.com> wrote:
>>
>> Hi Multimedia team,
>>
>> Is it possible to include a link in or flyover on a Commons webm or ogv video that a user can click to access an external resource such as another video or URL, like Youtube allows?
>>
>> Pine
>>
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>> Multimedia@lists.wikimedia.org
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>
>

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