From 08c716d11014a60a958b1c135fc223702a5810c1 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Sebastian=20Dr=C3=B6ge?= <sebastian@centricular.com>
Date: Wed, 7 Dec 2022 16:03:28 +0200
Subject: [PATCH] tttocea608: Don't fail if a gap event contains no duration

Part-of: <https://gitlab.freedesktop.org/gstreamer/gst-plugins-rs/-/merge_requests/1002>
---
 video/closedcaption/src/tttocea608/imp.rs | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/video/closedcaption/src/tttocea608/imp.rs b/video/closedcaption/src/tttocea608/imp.rs
index 2430e58b0..e62e85c57 100644
--- a/video/closedcaption/src/tttocea608/imp.rs
+++ b/video/closedcaption/src/tttocea608/imp.rs
@@ -900,7 +900,7 @@ impl TtToCea608 {
                     );
                 }
 
-                let frame_no = (timestamp + duration.unwrap())
+                let frame_no = (timestamp + duration.unwrap_or(gst::ClockTime::ZERO))
                     .mul_div_round(fps_n, fps_d)
                     .unwrap()
                     .seconds();