Some info.

It seems that the default for probesize might be 5000000:

https://ffmpeg.org/ffprobe-all.html

probesize integer (input)

    Set probing size in bytes, i.e. the size of the data to analyze to
    get stream information. A higher value will enable detecting more
    information in case it is dispersed into the stream, but will
    increase latency. Must be an integer not lesser than 32. It is
    5000000 by default.


When I try -lavfdopts probesize=32, there is no crash, and it plays fine.

I wrote a little script.  Random values below -lavfdopts probesize=282574
are fine.  282575 and above crashed.  I tried this same with the other
video file, exhibiting the same issue, and the 'crash point' was
different.  EG, 291281 and below was fine, 291282 and above crashed.

Well.. it's info anyhow.

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