Error reading mp4 file. Unknown error 0xC00D002F

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Mikheil Azatov
Mikheil Azatov 2016-10-11
回答： Walter Roberson 2017-10-17
I'm receiving an error reading *.mp4 file.
>> im=read(vid,1);
Error using VideoReader/populateNumFrames (line 636)
Could not read file due to an unexpected error. Reason: Read Failed Reason: Unknown error 0xC00D002F
The error pops up when it tries to read number of frames in the video files:
>> get(vid,'NumberOfFrames');
Error using VideoReader/populateNumFrames (line 636)
Could not read file due to an unexpected error. Reason: Could not obtain native media type Reason: Unknown error 0xC00D002F
Error in VideoReader/get.NumberOfFrames (line 316)
obj.populateNumFrames();
Error in VideoReader/get.NumberOfFrames (line 316)
obj.populateNumFrames();
Error in VideoReader/read (line 143)
numFrames = get(obj, 'NumberOfFrames');
I've been able to open many other mp4 files before and I can open this file with VLC or WMP without problems.
  1 个评论
Sam Duckerin
Sam Duckerin 2017-10-17
Have you found a solution?
I've got the same problem, trying to use VideoReader to load an H264 encoded .mp4 file. I needed to download the DivX H264 codec in order to be able to watch the video in WMP, which now works fine. I thought MATLAB might need to use the same codec but I'm still getting the "Unknown error 0xC00D002F"

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回答（1 个）

Walter Roberson
Walter Roberson 2017-10-17
It is difficult to find information on this error. I find numerous sites claiming "registry error", but they look like boilerplate text to me rather than actual technical analysis.
The closest that I can find to a real cause is https://github.com/Dash-Industry-Forum/dash.js/issues/1615 which hints that the error can (perhaps among other reasons) occur in some cases when trying to play DRM protected streams, or mixed streams that include DRM protected substreams.

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