core: ignore backstep command if demuxer is not capable

Also, mark demuxer as not capable if DVD playback is done. The problem
with DVD is that playback time (stream_pts) is not reported frame-exact,
and the time is a "guess" at best.

1 files changed, 2 insertions, 0 deletions

diff --git a/demux/demux.c b/demux/demux.c
index 305d414bfa..06b1a35d0f 100644
--- a/demux/demux.c
+++ b/demux/demux.c
@@ -925,6 +925,8 @@ static struct demuxer *open_given_type(struct MPOpts *opts,
         if (stream_manages_timeline(demuxer->stream)) {
             // Incorrect, but fixes some behavior with DVD/BD
             demuxer->ts_resets_possible = false;
+            // Doesn't work, because stream_pts is a "guess".
+            demuxer->accurate_seek = false;
         }
         demuxer_sort_chapters(demuxer);
         return demuxer;