Video file with subtitles/multiple audio track support?

Question

I know this is not a C++ specific question but more a metro API question - I couldn't find a proper section to ask this question so here it is.

How to play video file (assume properly encoded .mp4/h264/aac) with subtitle in it? and if the video file has multiple audio tracks, how to switch between them (what metro API to use?)

Answer 1

Hello,

 

Thanks for your feedback, I will involve more experts to investigate it.

 

Best regards,

Jesse

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Jesse Jiang [MSFT]
MSDN Community Support | Feedback to us

Answer 2

Hello Viyayo,

You can use the following interfaces to query and select the current audio stream. Please take a look at the links below. If you still have questions please let me know.

MediaElement.AudioStreamCount
http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.controls.mediaelement.audiostreamcount.aspx

MediaElement.AudioStreamIndex
http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.controls.mediaelement.audiostreamindex.aspx

MediaElement.GetAudioStreamLanguage
http://msdn.microsoft.com/en-us/library/windows/apps/br227384.aspx

I hope this helps,

James

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Windows Media SDK Technologies - Microsoft Developer Services - http://blogs.msdn.com/mediasdkstuff/

Answer 3

Thanks for the answer James. However,on the MSDN page you gave, I still couldn't find information on how the subtitle is supported - how do I query for available subtitles and how do I select a subtitle for display? and what subtitle format are supported?

Thanks again,

Answer 4

Hello Viyayo,

If you are using HTML you can create a WebVTT or TTML file and sync it to the video using the "track" element. If you are using the MediaElement you might be able to use the MarkerReached event to embed markers in the file and pull the text out of the marker to display as your closed caption text.

track element | track object
http://msdn.microsoft.com/en-us/library/windows/apps/Hh767385.aspx

MediaElement.MarkerReached event
http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.controls.mediaelement.markerreached.aspx

I hope this helps,

James

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Windows Media SDK Technologies - Microsoft Developer Services - http://blogs.msdn.com/mediasdkstuff/

Answer 5

Hello Viyayo,

If you are using HTML you can create a WebVTT or TTML file and sync it to the video using the "track" element. If you are using the MediaElement you might be able to use the MarkerReached event to embed markers in the file and pull the text out of the marker to display as your closed caption text.

track element | track object
http://msdn.microsoft.com/en-us/library/windows/apps/Hh767385.aspx

MediaElement.MarkerReached event
http://msdn.microsoft.com/en-us/library/windows/apps/windows.ui.xaml.controls.mediaelement.markerreached.aspx

I hope this helps,

James

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Windows Media SDK Technologies - Microsoft Developer Services - http://blogs.msdn.com/mediasdkstuff/

Does that mean MediaElement has no official support for subtitle (e.g. mpeg-4 part 17)? I have a parse the subtitle then display it as a separate layer when the moment comes.

Answer 6

At this time that does appear to be correct.

-James

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Windows Media SDK Technologies - Microsoft Developer Services - http://blogs.msdn.com/mediasdkstuff/