Eyevinn / mp4ff / 32963641047

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github

fix(mp4): error instead of panic when trun sample sizes exceed mdat data

A truncated file whose moof decodes cleanly but whose mdat carries
fewer bytes than the trun-declared sample sizes made
TrunBox.GetFullSamples and TrunBox.GetSampleInterval slice past the
end of mdat.Data and panic with index out of range (found by fuzzing
a fragmented-mp4 parser built on Fragment.GetFullSamples).

GetFullSamples gains an error return (pre-1.0 signature change);
GetSampleInterval already returned an error. Fragment.GetFullSamples
propagates the error with an unchanged signature.

Co-Authored-By: Claude Fable 5 <noreply@anthropic.com>

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