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Code Issues Releases Activity

fftools/ffmpeg: Fallback to duration if sample rate is unavailable

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Regression since: af1761f7
Fixes: Division by 0
Fixes: ffmpeg_crash_1

Found-by: Thuan Pham, Marcel Böhme, Andrew Santosa and Alexandru Razvan Caciulescu with AFLSmart
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
(cherry picked from commit 16d8b13b3b)
Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
This commit is contained in:
Michael Niedermayer
2018-05-01 22:44:07 +02:00
parent ed4e35a0fd
commit 8326072995
1 changed files with 6 additions and 2 deletions
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8
ffmpeg.c
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@@ -2396,8 +2396,12 @@ static int process_input_packet(InputStream *ist, const AVPacket *pkt)
ist->dts = ist->next_dts;
switch (ist->dec_ctx->codec_type) {
case AVMEDIA_TYPE_AUDIO:
ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
ist->dec_ctx->sample_rate;
if (ist->dec_ctx->sample_rate) {
ist->next_dts += ((int64_t)AV_TIME_BASE * ist->dec_ctx->frame_size) /
ist->dec_ctx->sample_rate;
} else {
ist->next_dts += av_rescale_q(pkt->duration, ist->st->time_base, AV_TIME_BASE_Q);
}
break;
case AVMEDIA_TYPE_VIDEO:
if (ist->framerate.num) {