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-rw-r--r--libavformat/ffmdec.c3
1 files changed, 3 insertions, 0 deletions
diff --git a/libavformat/ffmdec.c b/libavformat/ffmdec.c
index 03b7bd82ff..9951d756ea 100644
--- a/libavformat/ffmdec.c
+++ b/libavformat/ffmdec.c
@@ -359,6 +359,9 @@ static int ffm_read_packet(AVFormatContext *s, AVPacket *pkt)
FFMContext *ffm = s->priv_data;
int duration;
+ if (url_fsize(s->pb) == FFM_PACKET_SIZE)
+ return -1;
+
switch(ffm->read_state) {
case READ_HEADER:
if (!ffm_is_avail_data(s, FRAME_HEADER_SIZE+4)) {