@@ -3062,6 +3062,21 @@ static int mov_read_stts(MOVContext *c, AVIOContext *pb, MOVAtom atom)
st->nb_frames= total_sample_count;
if (duration)
st->duration= FFMIN(st->duration, duration);
+
+ // All samples have zero duration. They have higher chance be chose by
+ // mov_find_next_sample, which leads to seek again and again.
+ //
+ // It's AVERROR_INVALIDDATA actually, but such files exist in the wild.
+ // So only mark data stream as discarded for safety.
+ if (!duration && sc->stts_count &&
+ st->codecpar->codec_type == AVMEDIA_TYPE_DATA) {
+ av_log(c->fc, AV_LOG_WARNING,
+ "All samples in data stream index:id [%d:%d] have zero "
+ "duration, stream set to be discarded by default. Override "
+ "using AVStream->discard or -discard for ffmpeg\n",
+ st->index, st->id);
+ st->discard = AVDISCARD_ALL;
+ }
sc->track_end = duration;
return 0;
}