avformat/assenc: make sure we crawl extradata only if it's non-null

10 years ago · 937aac4f97
parent d246397161
commit 937aac4f97
1 changed files with 2 additions and 2 deletions
--- a/libavformat/assenc.c
+++ b/libavformat/assenc.c
@ -53,9 +53,9 @@ static int write_header(AVFormatContext *s)
        avio_write(s->pb, avctx->extradata, avctx->extradata_size);
        if (avctx->extradata[avctx->extradata_size - 1] != '\n')
            avio_write(s->pb, "\r\n", 2);
+        if (!strstr(avctx->extradata, "\n[Events]"))
+            avio_printf(s->pb, "[Events]\r\nFormat: Layer, Start, End, Style, Actor, MarginL, MarginR, MarginV, Effect, Text\r\n");
    }
-    if (!strstr(avctx->extradata, "\n[Events]"))
-        avio_printf(s->pb, "[Events]\r\nFormat: Layer, Start, End, Style, Actor, MarginL, MarginR, MarginV, Effect, Text\r\n");
    avio_flush(s->pb);

    return 0;