demux: mp4: play heif movies

modules/demux/mp4/libmp4.c

@@ -4690,6 +4690,7 @@ static int MP4_ReadBox_default( stream_t *p_stream, MP4_Box_t *p_box )
             case ATOM_soun:
                 return MP4_ReadBox_sample_soun( p_stream, p_box );
             case ATOM_vide:
+            case ATOM_pict: /* heif */
                 return MP4_ReadBox_sample_vide( p_stream, p_box );
             case ATOM_hint:
                 return MP4_ReadBox_sample_hint8( p_stream, p_box );

modules/demux/mp4/mp4.c

@@ -3329,6 +3329,10 @@ static void MP4_TrackSetup( demux_t *p_demux, mp4_track_t *p_track,
             es_format_Change( &p_track->fmt, AUDIO_ES, 0 );
             break;
 
+        case( ATOM_pict ): /* heif */
+            es_format_Change( &p_track->fmt, VIDEO_ES, 0 );
+            break;
+
         case( ATOM_vide ):
             if( !MP4_BoxGet( p_box_trak, "mdia/minf/vmhd") )
             {