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>
Sat, 12 Jan 2013 18:27:42 +0000 (19:27 +0100)
commit10ff052c601368f129466e6de19e9862aaaec7d1
tree36b7d2084a038ec7be398f6e46dc684b02f0754f
parentb143844ea0f6246e0d5a938d743e2e8a98453bec
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