decavsub: fix SSA hardsub when the stream contains subtitle lines with duration equals to zero.

Allow setting the subtitles packet duration to 0 if the source format is not PGS. Fixed #3424.

1 files changed, 1 insertions, 1 deletions

diff --git a/libhb/decavsub.c b/libhb/decavsub.c
index 22a422eef..bc48a5f5d 100644
--- a/libhb/decavsub.c
+++ b/libhb/decavsub.c
@@ -309,7 +309,7 @@ int decavsubWork( hb_avsub_context_t * ctx,
     avp.data = in->data;
     avp.size = in->size;
     avp.pts  = in->s.start;
-    if (in->s.duration > 0)
+    if (in->s.duration > 0 || ctx->subtitle->source != PGSSUB)
     {
         duration = in->s.duration;
     }