为提升您的使用体验,本站正在维护,部分功能暂时无法使用。如果本站文章无法解决您的问题,您想要向社区提问的话,请到 Twitter 上的 @FirefoxSupport 或 Reddit 上的 /r/firefox 提问,我们的支持社区将会很快回复您的疑问。

搜索 | 用户支持

防范以用户支持为名的诈骗。我们绝对不会要求您拨打电话或发送短信,及提供任何个人信息。请使用“举报滥用”选项报告涉及违规的行为。

详细了解

videos downloaded from youtube have no sound and i download these videos via internet download manager extension,this problem isn,t found in google chrome,help?

  • 4 个回答
  • 2 人有此问题
  • 1 次查看
  • 最后回复者为 ahmedmaher

more options

videos downloaded from youtube have no sound and i download these videos via internet download manager extension,this problem isn,t found in google chrome

i noticed that videos in firefox came to me as mkv videos and when i download it it came without any sounds however in google chrome the same video came to me as mp4 and when i download it it played very good and it has sound

videos downloaded from youtube have no sound and i download these videos via internet download manager extension,this problem isn,t found in google chrome i noticed that videos in firefox came to me as mkv videos and when i download it it came without any sounds however in google chrome the same video came to me as mp4 and when i download it it played very good and it has sound

所有回复 (4)

more options

Sounds like a problem with the downloaded. Video and audio are sent separately and combined by the downloader.

Try this; https://www.dvdvideosoft.com/

This Is ONLY A PC App https://www.dvdvideosoft.com/products/dvd/Free-YouTube-Download.htm Use this YouTube downloader to get single videos and complete playlists, show list, charts and user channels from YouTube. Convert to AVI, MP3, WMV.

more options

MKV = Matroska Multimedia Container: https://en.wikipedia.org/wiki/Matroska

Firefox doesn't support this container format although it is similar to WebM (but not the same). I don't know why you would get this MKV format and not a more common type.

Do you otherwise have a problem with playing media files?

You can open the YouTube test page to check support in Firefox for playing HTML5 media.

more options

i think i will stick with google chrome in case of downloading a video from youtube

thanks everyone for help

more options

cor-el said

MKV = Matroska Multimedia Container: https://en.wikipedia.org/wiki/Matroska Firefox doesn't support this container format although it is similar to WebM (but not the same). I don't know why you would get this MKV format and not a more common type. Do you otherwise have a problem with playing media files? You can open the YouTube test page to check support in Firefox for playing HTML5 media.

no i don't have any problems with playing media files

but when i download the video with IDM from youtube i found the mkv format and the video has no sound

i think there is something with the new version of firefox quantum