diff --git a/DOCS/man/options.rst b/DOCS/man/options.rst
index f49b5f4f46..6aa3466d0d 100644
--- a/DOCS/man/options.rst
+++ b/DOCS/man/options.rst
@@ -479,6 +479,16 @@ Playback Control
       framestep commands are transposed. Backstepping will perform very
       expensive work to step forward by 1 frame.
 
+    - Backward playback in wav files does not work properly (and possibly
+      similar formats, typically raw audio formats used through libavformat).
+      This is because libavformat does not align seeks on the packet sizes it
+      uses. (The packet sizes are arbitrary and chosen by libavformat
+      internally. Seeks on the other hand are sample-exact, which leads to
+      overlapping packets if the backward playback state machine seeks back.
+      This is very complex to work around, so it doesn't attempt to.)
+      A workaround is to remux to a format like mkv, which enforces packet
+      boundaries. Making mpv cache the entire file in memory also works.
+
     Tuning:
 
     - Remove all ``--vf``/``--af`` filters you have set. Disable deinterlacing.
diff --git a/demux/demux_raw.c b/demux/demux_raw.c
index 2b47ebfedf..7469d80c5e 100644
--- a/demux/demux_raw.c
+++ b/demux/demux_raw.c
@@ -301,7 +301,9 @@ static void raw_seek(demuxer_t *demuxer, double seek_pts, int flags)
     stream_t *s = demuxer->stream;
     int64_t end = 0;
     stream_control(s, STREAM_CTRL_GET_SIZE, &end);
-    int64_t pos = seek_pts * p->frame_rate * p->frame_size;
+    int64_t frame_nr = seek_pts * p->frame_rate;
+    frame_nr = frame_nr - (frame_nr % p->read_frames);
+    int64_t pos = frame_nr * p->frame_size;
     if (flags & SEEK_FACTOR)
         pos = end * seek_pts;
     if (pos < 0)