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avfilter/vf_showinfo: limit the max number of timecode

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Signed-off-by: Limin Wang <lance.lmwang@gmail.com>
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Limin Wang 2020-03-25 18:45:48 +08:00 committed by Michael Niedermayer
parent 4976b102d8
commit 585ac1ff5b
1 changed files with 3 additions and 2 deletions
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libavfilter/vf_showinfo.c
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@ -318,14 +318,15 @@ static int filter_frame(AVFilterLink *inlink, AVFrame *frame)
break;
case AV_FRAME_DATA_S12M_TIMECODE: {
uint32_t *tc = (uint32_t*)sd->data;
int m = FFMIN(tc[0],3);
if (sd->size != 16) {
av_log(ctx, AV_LOG_ERROR, "invalid data");
break;
}
for (int j = 1; j <= tc[0]; j++) {
for (int j = 1; j <= m; j++) {
char tcbuf[AV_TIMECODE_STR_SIZE];
av_timecode_make_smpte_tc_string(tcbuf, tc[j], 0);
av_log(ctx, AV_LOG_INFO, "timecode - %s%s", tcbuf, j != tc[0] ? ", " : "");
av_log(ctx, AV_LOG_INFO, "timecode - %s%s", tcbuf, j != m ? ", " : "");
}
break;
}