X-Git-Url: https://main.carlh.net/gitweb/?a=blobdiff_plain;f=src%2Flib%2Fplayer.cc;h=caa2791b8d573c3c2ad32efae0e9cd4239b56eb9;hb=ffdb290bcba1cb9a3e2e6768ee254629d696dd36;hp=3ceaac8c1b667fe39781dc027f5b21a2289e128e;hpb=bd0fbdae25424a491b30427443a0ce2b338522b8;p=dcpomatic.git

diff --git a/src/lib/player.cc b/src/lib/player.cc
index 3ceaac8c1..caa2791b8 100644
--- a/src/lib/player.cc
+++ b/src/lib/player.cc
@@ -293,8 +293,8 @@ Player::transform_image_subtitles (list<ImageSubtitle> subs) const
 					true
 					),
 				Position<int> (
-					rint (_video_container_size.width * i->rectangle.x),
-					rint (_video_container_size.height * i->rectangle.y)
+					lrint (_video_container_size.width * i->rectangle.x),
+					lrint (_video_container_size.height * i->rectangle.y)
 					)
 				)
 			);
@@ -524,18 +524,25 @@ Player::dcp_to_content_video (shared_ptr<const Piece> piece, DCPTime t) const
 	shared_ptr<const VideoContent> vc = dynamic_pointer_cast<const VideoContent> (piece->content);
 	DCPTime s = t - piece->content->position ();
 	s = min (piece->content->length_after_trim(), s);
-	/* We're returning a frame index here so we need to floor() the conversion since we want to know the frame
-	   that contains t, I think
+	s = max (DCPTime(), s + DCPTime (piece->content->trim_start(), piece->frc));
+
+	/* It might seem more logical here to convert s to a ContentTime (using the FrameRateChange)
+	   then convert that ContentTime to frames at the content's rate.  However this fails for
+	   situations like content at 29.9978733fps, DCP at 30fps.  The accuracy of the Time type is not
+	   enough to distinguish between the two with low values of time (e.g. 3200 in Time units).
+
+	   Instead we convert the DCPTime using the DCP video rate then account for any skip/repeat.
 	*/
-	return max (ContentTime (), ContentTime (s, piece->frc) + piece->content->trim_start ()).frames_floor (vc->video_frame_rate ());
+	return s.frames_floor (piece->frc.dcp) / piece->frc.factor ();
 }
 
 DCPTime
 Player::content_video_to_dcp (shared_ptr<const Piece> piece, Frame f) const
 {
 	shared_ptr<const VideoContent> vc = dynamic_pointer_cast<const VideoContent> (piece->content);
-	ContentTime const c = ContentTime::from_frames (f, vc->video_frame_rate ()) - piece->content->trim_start ();
-	return max (DCPTime (), DCPTime (c, piece->frc) + piece->content->position ());
+	/* See comment in dcp_to_content_video */
+	DCPTime const d = DCPTime::from_frames (f * piece->frc.factor(), piece->frc.dcp) - DCPTime (piece->content->trim_start (), piece->frc);
+	return max (DCPTime (), d + piece->content->position ());
 }
 
 Frame