Better nil checks in SCTE event parsing, fix go-gst over release (#330)

Author: biglittlebigben

go.mod

@@ -2,7 +2,7 @@ module github.com/livekit/ingress
 
 go 1.23.2
 
-replace github.com/go-gst/go-gst => github.com/livekit/go-gst v0.2.34-0.20250205234446-03e3e98e7c6f
+replace github.com/go-gst/go-gst => github.com/livekit/go-gst v0.2.34-0.20250213212803-e8b19bcbb3e9
 
 toolchain go1.23.6
 

go.sum

@@ -112,8 +112,8 @@ github.com/kylelemons/godebug v1.1.0 h1:RPNrshWIDI6G2gRW9EHilWtl7Z6Sb1BR0xunSBf0
 github.com/kylelemons/godebug v1.1.0/go.mod h1:9/0rRGxNHcop5bhtWyNeEfOS8JIWk580+fNqagV/RAw=
 github.com/lithammer/shortuuid/v4 v4.2.0 h1:LMFOzVB3996a7b8aBuEXxqOBflbfPQAiVzkIcHO0h8c=
 github.com/lithammer/shortuuid/v4 v4.2.0/go.mod h1:D5noHZ2oFw/YaKCfGy0YxyE7M0wMbezmMjPdhyEFe6Y=
-github.com/livekit/go-gst v0.2.34-0.20250205234446-03e3e98e7c6f h1:d5QHoW/YCF9atbqX6WhLFjtyrWOhlq/qssr46s2Pk+E=
-github.com/livekit/go-gst v0.2.34-0.20250205234446-03e3e98e7c6f/go.mod h1:pyCgY9XFSG0CAnJzoJ84R5XWn8rEj849EYJOwnAdB8k=
+github.com/livekit/go-gst v0.2.34-0.20250213212803-e8b19bcbb3e9 h1:y2yO9iMj61QwabYrMoLY8aheRVNJaBoXN0uJ+nuTI2U=
+github.com/livekit/go-gst v0.2.34-0.20250213212803-e8b19bcbb3e9/go.mod h1:pyCgY9XFSG0CAnJzoJ84R5XWn8rEj849EYJOwnAdB8k=
 github.com/livekit/go-rtmp v0.0.0-20230829211117-1c4f5a5c81ed h1:w4c3K0j/I2qG+6PUF/ep4tf93HRibNs9QOWWD1SID50=
 github.com/livekit/go-rtmp v0.0.0-20230829211117-1c4f5a5c81ed/go.mod h1:X+CliWDrjhm5C+NgmxVt2ncdO3MnKDlbZHTwkuf0808=
 github.com/livekit/mageutil v0.0.0-20230125210925-54e8a70427c1 h1:jm09419p0lqTkDaKb5iXdynYrzB84ErPPO4LbRASk58=

pkg/media/splice_processor.go

@@ -76,7 +76,13 @@ func (su *SpliceProcessor) ProcessSpliceEvent(ev *gst.Event) error {
 	}
 
 	str, _ := ev.GetStructure().GetValue("running-time-map")
-	rMap, _ := str.(*gst.Structure)
+	if str == nil {
+		return nil
+	}
+	rMap, ok := str.(*gst.Structure)
+	if !ok {
+		return nil
+	}
 
 	splices := scteSit.Splices()
 	for _, sp := range splices {