Cannot upload .mp4 file

Question

Happy PhD 2025-3-3

0
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https://ww2.mathworks.cn/matlabcentral/answers/2174703-cannot-upload-mp4-file

回答： Happy PhD 2025-3-3

I get the following error when I am trying to upload the frames from a recorded video in format .mp4. The video comes from a high speed camera.

Any idea what the issue is? I have upoaded these videos before and it worked, but i can't remember if I had to decode them or not beforehand. I can' even open them in VLC media player.

Error using VideoReader/initReader
Could not read file due to an unexpected error. Reason: Error
Creating Source Reader Reason: The operation on the current
offset is not permitted.
Error in audiovideo.internal.IVideoReader (line 136)
            initReader(obj, fileName, currentTime);
Error in VideoReader (line 104)
            obj@audiovideo.internal.IVideoReader(varargin{:});
Error in upload_frames (line 5)
vidObj = VideoReader("test.mp4");