diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index e73209cdb3..59b0058074 100644
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -1993,7 +1993,9 @@ static int read_packet(AVFormatContext *s, uint8_t *buf, int raw_packet_size, co
         /* check packet sync byte */
         if ((*data)[0] != 0x47) {
             /* find a new packet start */
-            avio_seek(pb, -raw_packet_size, SEEK_CUR);
+            uint64_t pos = avio_tell(pb);
+            avio_seek(pb, -FFMIN(raw_packet_size, pos), SEEK_CUR);
+
             if (mpegts_resync(s) < 0)
                 return AVERROR(EAGAIN);
             else