Z10 leaked OS 10.3.0.1154 video problem

So far this is the only problem I found in this test version of this OS. I write and shoot videos without any problem, but when I want to visualize them this error appears on the screen. See the attached photo
Attachment 301753
Attachment 301753

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I have had this problem with large movies (.mp4) and it says video format not supported.

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