avformat/movenc: avoid using uninitialized display_matrix_size

Signed-off-by: Michael Niedermayer <michaelni@gmx.at>
10 years ago · 3c5c6870a7
parent 276a8666d2
commit 3c5c6870a7
1 changed files with 1 additions and 1 deletions
--- a/libavformat/movenc.c
+++ b/libavformat/movenc.c
@ -2302,7 +2302,7 @@ static int mov_write_tkhd_tag(AVIOContext *pb, MOVMuxContext *mov,

        display_matrix = (uint32_t*)av_stream_get_side_data(st, AV_PKT_DATA_DISPLAYMATRIX,
                                                            &display_matrix_size);
-        if (display_matrix_size < 9 * sizeof(*display_matrix))
+        if (display_matrix && display_matrix_size < 9 * sizeof(*display_matrix))
            display_matrix = NULL;
    }