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avformat/jacosubdec: Check timeres 

Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 51f0ab8b12)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer 2023-09-30 19:59:06 +02:00
parent 4b257fba50
commit 61af3a5f2a
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GPG Key ID: B18E8928B3948D64
1 changed files with 7 additions and 4 deletions
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11
libavformat/jacosubdec.c
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@ -229,14 +229,17 @@ static int jacosub_read_header(AVFormatContext *s)
}
av_bprintf(&header, "#S %s", p);
break;
case 'T': // ...but must be placed after TIMERES
jacosub->timeres = strtol(p, NULL, 10);
if (!jacosub->timeres)
case 'T': { // ...but must be placed after TIMERES
int64_t timeres = strtol(p, NULL, 10);
if (timeres <= 0 || timeres > UINT32_MAX) {
jacosub->timeres = 30;
else
} else {
jacosub->timeres = timeres;
av_bprintf(&header, "#T %s", p);
}
break;
}
}
}
/* general/essential directives in the extradata */