mpegpsenc: avoid shifting dts/pts

Only shift if needed to avoid negative scr when requested
or for dvd.

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>

3 files changed, 33 insertions, 33 deletions

diff --git a/libavformat/mpegenc.c b/libavformat/mpegenc.c
index 23ba8edd67..b467bb5de5 100644
--- a/libavformat/mpegenc.c
+++ b/libavformat/mpegenc.c
@@ -1062,13 +1062,13 @@ static int mpeg_mux_write_packet(AVFormatContext *ctx, AVPacket *pkt)
     dts= pkt->dts;
 
     if (s->last_scr == AV_NOPTS_VALUE) {
-        if (dts == AV_NOPTS_VALUE || s->is_dvd) {
+        if (dts == AV_NOPTS_VALUE || (dts < preload && ctx->avoid_negative_ts) || s->is_dvd) {
             if (dts != AV_NOPTS_VALUE)
                 s->preload += av_rescale(-dts, AV_TIME_BASE, 90000);
             s->last_scr = 0;
         } else {
-            s->last_scr = dts + preload;
-            s->preload *= 2;
+            s->last_scr = dts - preload;
+            s->preload = 0;
         }
         preload = av_rescale(s->preload, 90000, AV_TIME_BASE);
         av_log(ctx, AV_LOG_DEBUG, "First SCR: %"PRId64" First DTS: %"PRId64"\n", s->last_scr, dts + preload);
diff --git a/tests/ref/lavf/mpg b/tests/ref/lavf/mpg
index c880fe680c..35465ed127 100644
--- a/tests/ref/lavf/mpg
+++ b/tests/ref/lavf/mpg
@@ -1,9 +1,9 @@
-bba1d30df5e8309c8eac70722014ad92 *./tests/data/lavf/lavf.mpg
+ddc5cd5469eb8a0500f8a725baead5e5 *./tests/data/lavf/lavf.mpg
 372736 ./tests/data/lavf/lavf.mpg
 ./tests/data/lavf/lavf.mpg CRC=0x5b136bb1
-f716380af800eb85112ba87c99845ac0 *./tests/data/lavf/lavf.mpg
+c4e9026e5f57777a71762d68994fc3a9 *./tests/data/lavf/lavf.mpg
 399360 ./tests/data/lavf/lavf.mpg
 ./tests/data/lavf/lavf.mpg CRC=0xd21e5631
-e396acf92df0c0b8753f54a15b5770ae *./tests/data/lavf/lavf.mpg
+bb22933de60193bce9032f67ce6fcc23 *./tests/data/lavf/lavf.mpg
 372736 ./tests/data/lavf/lavf.mpg
 ./tests/data/lavf/lavf.mpg CRC=0x5b136bb1
diff --git a/tests/ref/seek/lavf-mpg b/tests/ref/seek/lavf-mpg
index 935eae1f60..e804b84739 100644
--- a/tests/ref/seek/lavf-mpg
+++ b/tests/ref/seek/lavf-mpg
@@ -1,53 +1,53 @@
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208
 ret: 0         st:-1 flags:0  ts:-1.000000
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208
 ret: 0         st:-1 flags:1  ts: 1.894167
-ret: 0         st: 0 flags:0 dts: 1.880000 pts: 1.920000 pos: 327680 size: 12629
+ret: 0         st: 1 flags:1 dts: 1.051544 pts: 1.051544 pos: 342028 size:   314
 ret: 0         st: 0 flags:0  ts: 0.788333
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 0 flags:0 dts: 0.820000 pts: 0.860000 pos: 118784 size: 14717
 ret: 0         st: 0 flags:1  ts:-0.317500
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208
 ret: 0         st: 1 flags:0  ts: 2.576667
-ret: 0         st: 1 flags:1 dts: 1.772767 pts: 1.772767 pos: 368652 size:   379
+ret: 0         st: 1 flags:1 dts: 1.312767 pts: 1.312767 pos: 368652 size:   379
 ret: 0         st: 1 flags:1  ts: 1.470833
-ret: 0         st: 1 flags:1 dts: 1.250322 pts: 1.250322 pos: 145408 size:   261
+ret: 0         st: 1 flags:1 dts: 1.312767 pts: 1.312767 pos: 368652 size:   379
 ret: 0         st:-1 flags:0  ts: 0.365002
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208
 ret: 0         st:-1 flags:1  ts:-0.740831
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208
 ret: 0         st: 0 flags:0  ts: 2.153333
-ret: 0         st: 1 flags:1 dts: 1.511544 pts: 1.511544 pos: 342028 size:   314
+ret: 0         st: 1 flags:1 dts: 1.051544 pts: 1.051544 pos: 342028 size:   314
 ret: 0         st: 0 flags:1  ts: 1.047500
-ret: 0         st: 0 flags:0 dts: 1.040000 pts: 1.080000 pos:  40960 size: 16073
+ret: 0         st: 0 flags:0 dts: 1.020000 pts: 1.060000 pos: 196608 size: 17639
 ret: 0         st: 1 flags:0  ts:-0.058333
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208
 ret: 0         st: 1 flags:1  ts: 2.835833
-ret: 0         st: 1 flags:1 dts: 1.772767 pts: 1.772767 pos: 368652 size:   379
+ret: 0         st: 1 flags:1 dts: 1.312767 pts: 1.312767 pos: 368652 size:   379
 ret: 0         st:-1 flags:0  ts: 1.730004
-ret: 0         st: 0 flags:0 dts: 1.760000 pts: 1.800000 pos: 292864 size: 12894
+ret: 0         st: 1 flags:1 dts: 1.051544 pts: 1.051544 pos: 342028 size:   314
 ret: 0         st:-1 flags:1  ts: 0.624171
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 0 flags:0 dts: 0.620000 pts: 0.660000 pos:  55296 size: 14239
 ret: 0         st: 0 flags:0  ts:-0.481667
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208
 ret: 0         st: 0 flags:1  ts: 2.412500
-ret: 0         st: 1 flags:1 dts: 1.511544 pts: 1.511544 pos: 342028 size:   314
+ret: 0         st: 1 flags:1 dts: 1.051544 pts: 1.051544 pos: 342028 size:   314
 ret: 0         st: 1 flags:0  ts: 1.306667
-ret: 0         st: 1 flags:1 dts: 1.511544 pts: 1.511544 pos: 342028 size:   314
+ret: 0         st: 1 flags:1 dts: 1.312767 pts: 1.312767 pos: 368652 size:   379
 ret: 0         st: 1 flags:1  ts: 0.200844
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208
 ret: 0         st:-1 flags:0  ts:-0.904994
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208
 ret: 0         st:-1 flags:1  ts: 1.989173
-ret: 0         st: 1 flags:1 dts: 1.511544 pts: 1.511544 pos: 342028 size:   314
+ret: 0         st: 1 flags:1 dts: 1.051544 pts: 1.051544 pos: 342028 size:   314
 ret: 0         st: 0 flags:0  ts: 0.883344
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 0 flags:0 dts: 0.900000 pts: 0.940000 pos: 147456 size: 12755
 ret: 0         st: 0 flags:1  ts:-0.222489
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208
 ret: 0         st: 1 flags:0  ts: 2.671678
-ret: 0         st: 1 flags:1 dts: 1.772767 pts: 1.772767 pos: 368652 size:   379
+ret: 0         st: 1 flags:1 dts: 1.312767 pts: 1.312767 pos: 368652 size:   379
 ret: 0         st: 1 flags:1  ts: 1.565844
-ret: 0         st: 1 flags:1 dts: 1.511544 pts: 1.511544 pos: 342028 size:   314
+ret: 0         st: 1 flags:1 dts: 1.312767 pts: 1.312767 pos: 368652 size:   379
 ret: 0         st:-1 flags:0  ts: 0.460008
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208
 ret: 0         st:-1 flags:1  ts:-0.645825
-ret: 0         st: 1 flags:1 dts: 0.989089 pts: 0.989089 pos:   2048 size:   208
+ret: 0         st: 1 flags:1 dts: 0.529089 pts: 0.529089 pos:   2048 size:   208