We're calling on all EU-based Mozillians with iOS or iPadOS devices to help us monitor Apple’s new browser choice screens. Join the effort to hold Big Tech to account!

This site will have limited functionality while we undergo maintenance to improve your experience. If an article doesn't solve your issue and you want to ask a question, we have our support community waiting to help you at @FirefoxSupport on Twitter and/r/firefox on Reddit.

Avatar for Username

Cari Bantuan

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.

Pelajari Lebih Lanjut

Utas ini telah diarsipkan. Silakan membuat pertanyaan baru jika Anda membutuhkan bantuan.

Two mp4 videos on skydrive - low res mp4 video plays but higher res only plays audio

  • 5 balas
  • 4 memiliki masalah ini
  • 10 kunjungan
  • Balasan terakhir oleh starryvistas

starryvistas
starryvistas
more options

I have uploaded two mp4 video files to windows live skydrive. When I browse to them in firefox (10.0) the lower res one plays perfectly but the higher res plays only audio the video remains blank.

this file plays video and audio correctly  : 

   File name
   P1000505_x264
   Dimensions
   480 x 320
   Duration
   0:43
   Bitrate
   774 Kbps
   Size
   4,565 KB
   Type
   MP4 File

this higher resolution file plays audio but no video : 

   File name
   P1000805_x264
   Dimensions
   960 x 640
   Duration
   1:10
   Bitrate
   1 Mbps
   Size
   13,573 KB
   Type
   MP4 File


I have not got quicktime on my desktop pc - I have not loaded any plugins for quicktime - so why does one play and not the other? - and how can I get the other to play please? (I have updated my graphics driver )

I have uploaded two mp4 video files to windows live skydrive. When I browse to them in firefox (10.0) the lower res one plays perfectly but the higher res plays only audio the video remains blank. '''this file plays video and audio correctly :''' File name P1000505_x264 Dimensions 480 x 320 Duration 0:43 Bitrate 774 Kbps Size 4,565 KB Type MP4 File '''this higher resolution file plays audio but no video ''': File name P1000805_x264 Dimensions 960 x 640 Duration 1:10 Bitrate 1 Mbps Size 13,573 KB Type MP4 File I have not got quicktime on my desktop pc - I have not loaded any plugins for quicktime - so why does one play and not the other? - and how can I get the other to play please? (I have updated my graphics driver )

Semua Balasan (5)

user633449
user633449
more options

Is it possible for you to post links to these videos?

Also, if you update to Firefox 12, does that help?

cor-el
cor-el
  • Moderator
  • Top 10 Contributor
more options

Firefox doesn't play H.264 encoded mp4 files natively, so you need a player that can handle them.

Which code do you use to play those videos?

starryvistas
starryvistas Pemilik pertanyaan
more options

I am not doing anything special. The videos should play within the browser. I log into my skdrive account browse my uploaded photos and videos and click. In IE both files play correctly but in FF ( including V12.0) the higher res mp4 does not show video. Both play in VLC. I have read that H.264 is not supported in FF so why does one play?

this works https://skydrive.live.com/?cid=38240B5DB95454BA&sc=photos#cid=38240B5DB95454BA&id=38240B5DB95454BA!1279&sc=photos

this one only gives audio https://skydrive.live.com/?cid=38240B5DB95454BA&id=38240B5DB95454BA!1279&sc=photos#cid=38240B5DB95454BA&id=38240B5DB95454BA!1247&sc=photos

starryvistas
starryvistas Pemilik pertanyaan
more options

Any ideas anyone? This happens on 2 different PC's I have. Niether Firefoxs have any plugins for quicktime and quicktime is not installed on the PCs. Can anyone confirm they have the same situation if they try play videos in firefox?

starryvistas
starryvistas Pemilik pertanyaan
more options

Are Forums any good? - whenever I post I always end up having to answer my own question eventually! - aaah well, anyway for the benefit of anyone interested I suspect it is flash player in firefox browser that is playing the MP4's and perhaps it cannot cope with the higher resolution format.