mpegts: Warn if unable to seek back

Originally committed as revision 24477 to svn://svn.ffmpeg.org/ffmpeg/trunk

diff --git a/libavformat/mpegts.c b/libavformat/mpegts.c
index b1600901e24ede134b7112a3f318bec5867f9f66..27d13bcd9ec6908683d6ad86363dd01ca4d3731c 100644 (file)
--- a/libavformat/mpegts.c
+++ b/libavformat/mpegts.c
@@ -1387,7 +1387,8 @@ static int mpegts_read_header(AVFormatContext *s,
         /* normal demux */
 
         /* first do a scaning to get all the services */
-        url_fseek(pb, pos, SEEK_SET);
+        if (url_fseek(pb, pos, SEEK_SET) < 0)
+            av_log(s, AV_LOG_ERROR, "Unable to seek back to the start\n");
 
         mpegts_open_section_filter(ts, SDT_PID, sdt_cb, ts, 1);