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

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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 )

All Replies (5)

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

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

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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?

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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

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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?

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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.