round timestamps up, k2 broadcast server seems to need it

Originally committed as revision 9630 to svn://svn.ffmpeg.org/ffmpeg/trunk

libavformat/gxfenc.c

@@ -710,7 +710,7 @@ static int gxf_parse_mpeg_frame(GXFStreamContext *sc, const uint8_t *buf, int si
 static int gxf_write_media_preamble(ByteIOContext *pb, GXFContext *ctx, AVPacket *pkt, int size)
 {
     GXFStreamContext *sc = &ctx->streams[pkt->stream_index];
-    int64_t dts = av_rescale(pkt->dts, ctx->sample_rate, sc->codec->time_base.den);
+    int64_t dts = av_rescale_rnd(pkt->dts, ctx->sample_rate, sc->codec->time_base.den, AV_ROUND_UP);
 
     put_byte(pb, sc->media_type);
     put_byte(pb, sc->index);

tests/libav.regression.ref

@@ -28,7 +28,7 @@ f8ad5bd78f4d012a8ce9570aa395ac54 *./tests/data/b-libav.flv
 7820fa85ab86c62028d8dbda94589573 *./tests/data/b-libav.dv
 3600000 ./tests/data/b-libav.dv
 ./tests/data/b-libav.dv CRC=0xf517e829
-feb04ba3cf4f607d5527664eb69ec72e *./tests/data/b-libav.gxf
+15d8f0caadacf67a7e602fd244bc0c71 *./tests/data/b-libav.gxf
 814640 ./tests/data/b-libav.gxf
 ./tests/data/b-libav.gxf CRC=0xa376c09e
 9a9da315747599f7718cc9a9a09c21ff *./tests/data/b-libav.pbm