Add files via upload

go.mod

@@ -0,0 +1,10 @@
+module main
+
+go 1.17
+
+require (
+	github.com/abema/go-mp4 v0.7.2
+	github.com/sunfish-shogi/bufseekio v0.1.0
+)
+
+require github.com/google/uuid v1.1.2 // indirect