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-rw-r--r--libmpdemux/asfheader.c2
1 files changed, 1 insertions, 1 deletions
diff --git a/libmpdemux/asfheader.c b/libmpdemux/asfheader.c
index 994c3e890d..857a899bef 100644
--- a/libmpdemux/asfheader.c
+++ b/libmpdemux/asfheader.c
@@ -542,7 +542,7 @@ int read_asf_header(demuxer_t *demuxer,struct asf_priv* asf){
asf->packetsize=fileh->max_packet_size;
asf->packet=malloc(asf->packetsize); // !!!
asf->packetrate=fileh->max_bitrate/8.0/(double)asf->packetsize;
- asf->movielength=(fileh->play_duration-10000*fileh->preroll)/10000000.0;
+ asf->movielength=FFMAX(0.0, (fileh->play_duration / 10000.0 - fileh->preroll) / 1000.0);
}
// find content header