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video4linux2: Avoid a floating point exception

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This avoids a segfault in avconv_opt.c:opt_target when trying to
determine the norm.

(cherry picked from commit dc71f19588)
Signed-off-by: Diego Biurrun <diego@biurrun.de>
This commit is contained in:
Bernhard Übelacker 2014-07-27 08:38:59 -07:00 committed by Diego Biurrun
parent e4fdfdf65d
commit 277103e07f
1 changed files with 2 additions and 1 deletions
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3
avconv.c
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@ -4212,7 +4212,8 @@ static int opt_target(OptionsContext *o, const char *opt, const char *arg)
for (j = 0; j < nb_input_files; j++) {
for (i = 0; i < input_files[j].nb_streams; i++) {
AVCodecContext *c = input_files[j].ctx->streams[i]->codec;
if (c->codec_type != AVMEDIA_TYPE_VIDEO)
if (c->codec_type != AVMEDIA_TYPE_VIDEO ||
!c->time_base.num)
continue;
fr = c->time_base.den * 1000 / c->time_base.num;
if (fr == 25000) {