Windows 10 reached EOS (end of support) on October 14, 2025. If you are on Windows 10, see this article.

Mozilla サポートの検索

サポート詐欺に注意してください。 私たちはあなたに通話やショートメッセージの送信、個人情報の共有を求めることはありません。疑わしい行為を見つけたら「迷惑行為を報告」からご報告ください。

詳しく学ぶ

このスレッドはアーカイブに保管されました。 必要であれば新たに質問してください。

OpenH264 codec NOT installing

  • 2 件の返信
  • 1 人がこの問題に困っています
  • 44 回表示
  • 最後の返信者: wwally

Hi, hi!

I just got my new MacBook Pro in the last weeks, installed the new Firefox in it but I could not use Netflix. I looked up add-ons and there is one plugin OpenH264 from Cisco that says it will install shortly but it does not. I tried to toggle it but that changed nothing. I really do not know what to do. Netflix runs normally on Safari, but Firefox is my browser of choice, it would be nice to be able to use there. I also do not know yet which other sites this might affect. Any ideas to what the problem is? How to fix it?

Thanks a lot

Hi, hi! I just got my new MacBook Pro in the last weeks, installed the new Firefox in it but I could not use Netflix. I looked up add-ons and there is one plugin OpenH264 from Cisco that says it will install shortly but it does not. I tried to toggle it but that changed nothing. I really do not know what to do. Netflix runs normally on Safari, but Firefox is my browser of choice, it would be nice to be able to use there. I also do not know yet which other sites this might affect. Any ideas to what the problem is? How to fix it? Thanks a lot

選ばれた解決策

Is this question about desktop Firefox for MacBook Pro with Apple Silicon? Well, then it's not about OpenH264, we use Widevine for a DRM content. It looks like you still need Rosetta, see Netflix, Hulu, Disney+ or Prime error after installing Firefox version 84 on Mac.

この回答をすべて読む 👍 1

すべての返信 (2)

選ばれた解決策

Is this question about desktop Firefox for MacBook Pro with Apple Silicon? Well, then it's not about OpenH264, we use Widevine for a DRM content. It looks like you still need Rosetta, see Netflix, Hulu, Disney+ or Prime error after installing Firefox version 84 on Mac.

Thank you so much! :) Solved!