Yes, there are security issues but quite a few are not ffmpeg itself related - the input is pretty shabby or at least not exactly easy to deal with!
Obviously, they could do with some assistance and I'm sure you and I will both dive in with equal zeal.
"Validate your inputs" is a common rule. Fuzzing is a thing. Both for good reasons (including security).
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Yes, there are security issues but quite a few are not ffmpeg itself related - the input is pretty shabby or at least not exactly easy to deal with!
Obviously, they could do with some assistance and I'm sure you and I will both dive in with equal zeal.