avformat/mpegts: check avio_tell() return code before using it

Fixes Ticket2962 Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
11 years ago · 5dc6c0ea9e
parent e024953722
commit 5dc6c0ea9e
1 changed files with 4 additions and 2 deletions
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@ -1862,8 +1862,10 @@ static int handle_packet(MpegTSContext *ts, const uint8_t *packet)
        return 0;

    pos = avio_tell(ts->stream->pb);
-    av_assert0(pos >= TS_PACKET_SIZE);
-    ts->pos47_full = pos - TS_PACKET_SIZE;
+    if (pos >= 0) {
+        av_assert0(pos >= TS_PACKET_SIZE);
+        ts->pos47_full = pos - TS_PACKET_SIZE;
+    }

    if (tss->type == MPEGTS_SECTION) {
        if (is_start) {