diff --git a/demux/demux.c b/demux/demux.c
index 042e3a9cc3..2c252e6c20 100644
--- a/demux/demux.c
+++ b/demux/demux.c
@@ -219,6 +219,8 @@ struct demux_internal {
     // -- Access from demuxer thread only
     bool enable_recording;
     struct mp_recorder *recorder;
+    int64_t slave_unbuffered_read_bytes; // value repoted from demuxer impl.
+    int64_t cache_unbuffered_read_bytes; // for demux_reader_state.bytes_per_second
 };
 
 // A continuous range of cached packets for all enabled streams.
@@ -3036,6 +3038,19 @@ void demux_block_reading(struct demuxer *demuxer, bool block)
     pthread_mutex_unlock(&in->lock);
 }
 
+static void update_bytes_read(struct demux_internal *in)
+{
+    struct demuxer *demuxer = in->d_thread;
+    struct stream *stream = demuxer->stream;
+
+    int64_t new = stream->total_unbuffered_read_bytes +
+                  in->slave_unbuffered_read_bytes;
+    stream->total_unbuffered_read_bytes = 0;
+    in->slave_unbuffered_read_bytes = 0;
+
+    in->cache_unbuffered_read_bytes += new;
+}
+
 // must be called not locked
 static void update_cache(struct demux_internal *in)
 {
@@ -3048,8 +3063,7 @@ static void update_cache(struct demux_internal *in)
     int64_t stream_size = stream_get_size(stream);
     stream_control(stream, STREAM_CTRL_GET_METADATA, &stream_metadata);
 
-    demuxer->total_unbuffered_read_bytes += stream->total_unbuffered_read_bytes;
-    stream->total_unbuffered_read_bytes = 0;
+    update_bytes_read(in);
 
     pthread_mutex_lock(&in->lock);
 
@@ -3068,8 +3082,8 @@ static void update_cache(struct demux_internal *in)
     int64_t now = mp_time_us();
     int64_t diff = now - in->last_speed_query;
     if (diff >= MP_SECOND_US) {
-        uint64_t bytes = demuxer->total_unbuffered_read_bytes;
-        demuxer->total_unbuffered_read_bytes = 0;
+        uint64_t bytes = in->cache_unbuffered_read_bytes;
+        in->cache_unbuffered_read_bytes = 0;
         in->last_speed_query = now;
         in->bytes_per_second = bytes / (diff / (double)MP_SECOND_US);
     }
@@ -3080,6 +3094,17 @@ static void update_cache(struct demux_internal *in)
     pthread_mutex_unlock(&in->lock);
 }
 
+// Used by demuxers to report the amount of transferred bytes. This is for
+// streams which circumvent demuxer->stream (stream statistics are handled by
+// demux.c itself).
+void demux_report_unbuffered_read_bytes(struct demuxer *demuxer, int64_t new)
+{
+    struct demux_internal *in = demuxer->in;
+    assert(demuxer == in->d_thread);
+
+    in->slave_unbuffered_read_bytes += new;
+}
+
 void demux_get_bitrate_stats(struct demuxer *demuxer, double *rates)
 {
     struct demux_internal *in = demuxer->in;
diff --git a/demux/demux.h b/demux/demux.h
index 156021007d..09f6895544 100644
--- a/demux/demux.h
+++ b/demux/demux.h
@@ -222,9 +222,6 @@ typedef struct demuxer {
     // Triggered when ending demuxing forcefully. Usually bound to the stream too.
     struct mp_cancel *cancel;
 
-    // Demuxer thread only.
-    uint64_t total_unbuffered_read_bytes;
-
     // Since the demuxer can run in its own thread, and the stream is not
     // thread-safe, only the demuxer is allowed to access the stream directly.
     // Also note that the stream can get replaced if fully_read is set.
@@ -294,6 +291,8 @@ void demux_update(demuxer_t *demuxer);
 void demux_disable_cache(demuxer_t *demuxer);
 bool demux_is_network_cached(demuxer_t *demuxer);
 
+void demux_report_unbuffered_read_bytes(struct demuxer *demuxer, int64_t new);
+
 struct sh_stream *demuxer_stream_by_demuxer_id(struct demuxer *d,
                                                enum stream_type t, int id);
 
diff --git a/demux/demux_lavf.c b/demux/demux_lavf.c
index c53c00a8c3..a021542500 100644
--- a/demux/demux_lavf.c
+++ b/demux/demux_lavf.c
@@ -235,7 +235,7 @@ static void update_read_stats(struct demuxer *demuxer)
         int64_t cur = nest->id->bytes_read;
         int64_t new = cur - nest->last_bytes;
         nest->last_bytes = cur;
-        demuxer->total_unbuffered_read_bytes += new;
+        demux_report_unbuffered_read_bytes(demuxer, new);
     }
 }