From b5d51d23a068f7511662acd363b39d2f922dff0e Mon Sep 17 00:00:00 2001 From: Michael Niedermayer Date: Tue, 1 May 2018 22:44:07 +0200 Subject: [PATCH] fftools/ffmpeg: Fallback to duration if sample rate is unavailable MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit 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 (cherry picked from commit 16d8b13b3b26c19d7f8856e039fe6662d96b4ff3) Signed-off-by: Michael Niedermayer --- ffmpeg.c | 8 ++++++-- 1 file changed, 6 insertions(+), 2 deletions(-) diff --git a/ffmpeg.c b/ffmpeg.c index 4b4dae47fe..eb0f8b7c9c 100644 --- a/ffmpeg.c +++ b/ffmpeg.c @@ -2725,8 +2725,12 @@ static int process_input_packet(InputStream *ist, const AVPacket *pkt, int no_eo 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) {