use av_seek_frame to flush demxu pending packets, fixes seeking, should have been done when av_find_stream_info was added

Originally committed as revision 13855 to svn://svn.ffmpeg.org/ffmpeg/trunk

ffserver.c

@@ -1953,7 +1953,7 @@ static int open_input_stream(HTTPContext *c, const char *info)
 
 #if 1
     if (c->fmt_in->iformat->read_seek)
-        c->fmt_in->iformat->read_seek(c->fmt_in, 0, stream_pos, 0);
+        av_seek_frame(c->fmt_in, -1, stream_pos, 0);
 #endif
     /* set the start time (needed for maxtime and RTP packet timing) */
     c->start_time = cur_time;

tests/ffserver.regression.ref

@@ -1,10 +1,10 @@
 18c4ba0e8e7adb781216e38de61c2e39  ff-test_h.avi
-9818d41feb3e41efd5137c722f86f8f0  ff-test_l.avi
-d976848a9e4d5d8fc2659e4841cdece5  ff-test.swf
-93f1e29f7b292ebbd4d97d58661caefb  ff-test_h.asf
-0661a8f94a3450c133c81342450c28fb  ff-test_l.asf
-c6d60a807e4d61483a9ac28660e8361e  ff-test_h.rm
-e27f6a97432365da9449411b97f8dfa8  ff-test_l.rm
-35d3332d7ef440273e8ebcfedeeae1ca  ff-test.jpg
-fe20235b8830e3a0e49a51dfcfb2a7a7  ff-test_small.jpg
-a22cc793b9f938cc05cd0c56ccf9423c  ff-test.mjpg
+4f11d850f564af3359951b46ed1e571e  ff-test_l.avi
+59c7b9ea84ea3d0e9fed64340f06a3d8  ff-test.swf
+7869c3c4173745faa19dbc70fb199bb9  ff-test_h.asf
+7367fd8c4dc4253af98c66df318e5307  ff-test_l.asf
+76180cc972bd4bd46bc9104c82c971d9  ff-test_h.rm
+edc63f73e1cd02841e3120b03c8133d6  ff-test_l.rm
+d41d8cd98f00b204e9800998ecf8427e  ff-test.jpg
+d41d8cd98f00b204e9800998ecf8427e  ff-test_small.jpg
+dad98a8937cdbf7e57cef745d5558970  ff-test.mjpg