lavf: avoid integer overflow in ff_compute_frame_duration()
authorJanne Grunau <janne-libav@jannau.net>
Fri, 23 Nov 2012 13:05:36 +0000 (14:05 +0100)
committerReinhard Tartler <siretart@tauware.de>
Sun, 10 Feb 2013 17:01:15 +0000 (18:01 +0100)
commit2e1474fd9988e0d8749b8ba2eb46a945ef37dfb7
tree132acd79149d35d4dda172867f2884913567dbb2
parent1f1b2f18067bef0339c5b223a06421ed200ed60c
lavf: avoid integer overflow in ff_compute_frame_duration()

Scaling the denominator instead of the numerator if it is too large
loses precision. Fixes an assert caused by a negative frame duration in
the fuzzed sample nasa-8s2.ts_s202310.

CC: libav-stable@libav.org
(cherry picked from commit 7709ce029a7bc101b9ac1ceee607cda10dcb89dc)

Signed-off-by: Reinhard Tartler <siretart@tauware.de>
libavformat/utils.c