demux: don't adjust internal backward playback seeks by start time

Only timestamps that enter or leave the demuxer API should be adjusted
by ts_offset (which is usually the start time). queue_seek() is also
used by backward demux seeks, which uses an internal timestamp.

1 files changed, 5 insertions, 3 deletions

diff --git a/demux/demux.c b/demux/demux.c
index 92121c9b7b..019a8469c7 100644
--- a/demux/demux.c
+++ b/demux/demux.c
@@ -3171,7 +3171,12 @@ int demux_seek(demuxer_t *demuxer, double seek_pts, int flags)
     assert(demuxer == in->d_user);
 
     pthread_mutex_lock(&in->lock);
+
+    if (!(flags & SEEK_FACTOR))
+        seek_pts = MP_ADD_PTS(seek_pts, -in->ts_offset);
+
     int res = queue_seek(in, seek_pts, flags, true);
+
     pthread_cond_signal(&in->wakeup);
     pthread_mutex_unlock(&in->lock);
 
@@ -3187,9 +3192,6 @@ static bool queue_seek(struct demux_internal *in, double seek_pts, int flags,
     MP_VERBOSE(in, "queuing seek to %f%s\n", seek_pts,
                in->seeking ? " (cascade)" : "");
 
-    if (!(flags & SEEK_FACTOR))
-        seek_pts = MP_ADD_PTS(seek_pts, -in->ts_offset);
-
     bool require_cache = flags & SEEK_CACHED;
     flags &= ~(unsigned)SEEK_CACHED;