[FFmpeg-devel] [mov] Error on too large stsd entry counts.

[Dale Curtis]

Entries are always at least 8 bytes per the parsing code, so if we
see an impossible entry count avoid massive allocations. This is
similar to an existing check in mov_read_stsc().

Since ff_mov_read_stsd_entries() does eof checks, an alternative
approach could be to clamp the entry count to atom.size / 8.

Signed-off-by: Dale Curtis <dalecurtis at chromium.org>
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