avformat/ivfenc: fix division by zero

Fixes Ticket 5115 Signed-off-by: Michael Niedermayer <michael@niedermayer.cc>
9 years ago · 5c8467a07c
parent fe225b113b
commit 5c8467a07c
1 changed files with 3 additions and 2 deletions
--- a/libavformat/ivfenc.c
+++ b/libavformat/ivfenc.c
@ -72,8 +72,9 @@ static int ivf_write_packet(AVFormatContext *s, AVPacket *pkt)
 static int ivf_write_trailer(AVFormatContext *s)
 {
    AVIOContext *pb = s->pb;
-    if (pb->seekable) {
-        IVFEncContext *ctx = s->priv_data;
+    IVFEncContext *ctx = s->priv_data;
+
+    if (pb->seekable && ctx->frame_cnt > 1) {
        size_t end = avio_tell(pb);

        avio_seek(pb, 24, SEEK_SET);