mdn / mdn/browser-compat-data

mediatypes.video - WebM - No alpha support in Safari

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browser:safari data:api
Dominant language
JSON
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Description

What type of issue is this?

Incorrect support data (example: BrowserX says "86" but support was added in "40")

What information was incorrect, unhelpful, or incomplete?

Safari doesn't have full WebM support, as it doesn't support alpha channels.

What browsers does this problem apply to, if applicable?

No response

What did you expect to see?

Partial support for Safari

Did you test this? If so, how?

Yes.
With https://rotato.netlify.app/alpha-demo/movie-webm.webm.

Can you link to any release notes, bugs, pull requests, or MDN pages related to this?

No response

Do you have anything more you want to share?

No response

MDN URL

No response

MDN metadata

No response

Contributor guide

Open the contributing guide

First steps

  1. Read the whole issue, then the project's contributing guide.
  2. Comment on the issue to say you are picking it up — it saves two people doing the same work.
  3. Fork the repository and make your change on a branch.
  4. Open a pull request that references the issue number.

Research direction

Start at the mediatypes.video WebM compatibility entry and compare its Safari data with the reported alpha-demo/movie-webm.webm behavior. Update the entry so Safari reflects partial support for WebM alpha channels, then verify that the compatibility data matches the observed result.

Written by the indexing model from the issue text.

Assessment

Tech stack
json
Domain
documentation, web-dev
Issue type
Bug
Difficulty
2/5
Estimated time
1-3 hours
Activity status
Stale
Clarity
Mostly clear
Newbie friendliness
35/100

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