---
 libavformat/vqf.c |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/libavformat/vqf.c b/libavformat/vqf.c
index 057a371..4c69a69 100644
--- a/libavformat/vqf.c
+++ b/libavformat/vqf.c
@@ -262,8 +262,10 @@ static int vqf_read_seek(AVFormatContext *s,
 
     st->cur_dts = av_rescale(pos, st->time_base.den,
                              st->codec->bit_rate * (int64_t)st->time_base.num);
+    st->cur_dts = FFMAX(st->cur_dts, -2);
 
     pos += 2 * c->frame_bit_len;
+    pos = FFMAX(pos, 0);
     if ((ret = avio_seek(s->pb, ((pos-7) >> 3) + s->data_offset, SEEK_SET)) < 
0)
         return ret;
 
-- 
1.7.1

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