core: Handle missing timestamp errors a bit better

If there is no timestamp available for a video frame at all, use
timestamp from the previous frame (if any) instead of leaving it as
MP_NOPTS_VALUE. The main practical difference for playback is that
MP_NOPTS_VALUE caused timing to be reset, moving current video
position immediately to time of the next frame that had a timestamp
and thus likely advancing the video too fast. Now the next frame with
a timestamp will be shown at its proper position relative to the
previous timestamp.

1 files changed, 2 insertions, 0 deletions

diff --git a/mplayer.c b/mplayer.c
index 1bd4cfaf2b..0f2cae6736 100644
--- a/mplayer.c
+++ b/mplayer.c
@@ -2315,6 +2315,8 @@ static double update_video(struct MPContext *mpctx, int *blit_frame)
         mp_msg(MSGT_CPLAYER, MSGL_ERR, "Video pts after filters MISSING\n");
         // Try to use decoder pts from before filters
         pts = sh_video->pts;
+        if (pts == MP_NOPTS_VALUE)
+            pts = sh_video->last_pts;
     }
     sh_video->pts = pts;
     if (sh_video->last_pts == MP_NOPTS_VALUE)