Mozilla サポートの検索

Avoid support scams. We will never ask you to call or text a phone number or share personal information. Please report suspicious activity using the “Report Abuse” option.

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。

youtube flash video player doesn't work

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

more options

youtube flash player doesn't work

and i can't download mp4 format from youtube

and when i install youtube flash video player i can't download mp4 format and mkv format appear

youtube flash player doesn't work and i can't download mp4 format from youtube and when i install youtube flash video player i can't download mp4 format and mkv format appear

すべての返信 (2)

more options

Hi   !

YouTube uses   HTML5,   as far as I know.
Would you consider this:
https://addons.mozilla.org/en-US/firefox/addon/simple-youtube-converter/

more options

Some websites do not allow downloads. However, a download manager/helper can bypass this.

Go to the Mozilla Add-ons Web Page {web link} (There’s a lot of good stuff here) and search for what you want.


Youtube currently uses the HTML5 player.

https://support.mozilla.org/en-US/kb/fix-common-audio-and-video-issues