[vlc-commits] demux: mp4: don't set invalid rate in audio v1

[Francois Cartegnie]

vlc/vlc-3.0 | branch: master | Francois Cartegnie <fcvlcdev at free.fr> | Mon Mar  8 15:42:04 2021 +0100| [13ed1894659d7ce705b59f789b60cac35a53ced9] | committer: Francois Cartegnie

demux: mp4: don't set invalid rate in audio v1

refs #25481

> http://git.videolan.org/gitweb.cgi/vlc/vlc-3.0.git/?a=commit;h=13ed1894659d7ce705b59f789b60cac35a53ced9
---

 modules/demux/mp4/libmp4.c | 8 ++++++++
 1 file changed, 8 insertions(+)

diff --git a/modules/demux/mp4/libmp4.c b/modules/demux/mp4/libmp4.c
index 48cf23c271..62dc308db5 100644
--- a/modules/demux/mp4/libmp4.c
+++ b/modules/demux/mp4/libmp4.c
@@ -2618,6 +2618,14 @@ static int MP4_ReadBox_sample_soun( stream_t *p_stream, MP4_Box_t *p_box )
     if( p_box->data.p_sample_soun->i_qt_version == 1 && i_read >= 16 )
     {
         /* SoundDescriptionV1 */
+
+        if( p_box->data.p_sample_soun->i_sampleratehi == 0x1 && //65536
+            p_box->data.p_sample_soun->i_sampleratelo == 0x0 )  //remainder
+        {
+            /* ISOBMFF sets to 1 << 16, qtff does not */
+            p_box->data.p_sample_soun->i_sampleratehi = 0;
+        }
+
         MP4_GET4BYTES( p_box->data.p_sample_soun->i_sample_per_packet );
         MP4_GET4BYTES( p_box->data.p_sample_soun->i_bytes_per_packet );
         MP4_GET4BYTES( p_box->data.p_sample_soun->i_bytes_per_frame );