why can not work when set CreateFromStream?

mc 4,436

MediaCapture capture;
capture.StartRecordToStreamAsync(profile,stream);

and I use this stream to create MediaSource do not work.

myVideo=MediaSource.CreateFromStream(stream);

the video do not play.

unless I run this:

capture.StopCaptureAsync();

why?

how to play the video when I am capturing to the stream?

Junjie Zhu - MSFT 17,391 Reputation points Microsoft Vendor

2023-11-17T08:01:27.0533333+00:00

Hi @mc Welcome to Microsoft Q&A!

I noticed that your question has two tags, could you please tell us what is your project? UWP or WinUI3?

Thank you.
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mc 4,436 Reputation points

2023-11-17T08:10:46.1733333+00:00

now I found the problem.

it is the data I read is not right.

the stream I get from StartRecordToStreamAsync and I will use GetInputStreamAt(offset).AsStreamForRead().Read to read to buffer and then write the buffer to the new stream.

but I find that the buffer I read is not equal to the stream I get from StartRecordToStreamAsync

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