搜尋 Mozilla 技術支援網站

防止技術支援詐騙。我們絕對不會要求您撥打電話或發送簡訊,或是提供個人資訊。請用「回報濫用」功能回報可疑的行為。

Learn More

Linux/Fedora30 h.264 media "is not supported" but downloaded video plays fine

  • 2 回覆
  • 1 有這個問題
  • 7 次檢視
  • 最近回覆由 cor-el

more options

ffmpeg is installed

== From twitter web page: error in web console:

For example, on twitter i get a "the media could not be played" placeholder and this in the web console:

HTTP “Content-Type” of “video/mp4” is not supported. Load of media resource https://video.twimg.com/amplify_video/1149302678771683333/vid/1280x720/qFCcMLAnjR_MBans.mp4?tag=13 failed. home

The video on this page can’t be played. Your system may not have the required video codecs for: video/mp4; codecs="avc1.42E01E mp4a.40.2"

When i click on that link in the error it saves the video to /tmp and plays it in ffplay.. and in preferences->Applications, video/mp4 shows up with ffplay configured.

== Plays fine with a local file

When I put that mp4 link in the address bar, it gives me a download dialog, I can download that file, and play it in firefox from the command line:

firefox qFCcMLAnjR_MBans.mp4

== Plays fine with a local html file with the video control html element:

When i open a local html file with the video control element that plays the video. So why do I get those errors when this is viewed on the twitter website?

Any pointers appreciated.

Thanks!

由 Ran 於 修改

所有回覆 (2)

more options

Hi,

it is possible to be active and see the HD by following the following link

https://support.mozilla.org/en-US/kb/firefox-4k-ultra-high-definition-youtube-videos

more options

Try the Firefox version from the official Mozilla server if you currently use a version from the repositories of your Linux distribution.


gvfs-mime --query video/mp4