From 8b6223627e2584ff7510db6d600cf5bd11b98b87 Mon Sep 17 00:00:00 2001
From: Bill Thiede <git@xinu.tv>
Date: Sun, 3 Nov 2019 19:59:28 -0800
Subject: [PATCH] Skip encoding for subtitles when empty.

---
 src/lib.rs | 1 +
 1 file changed, 1 insertion(+)

diff --git a/src/lib.rs b/src/lib.rs
index 28ea101..df2319e 100644
--- a/src/lib.rs
+++ b/src/lib.rs
@@ -190,6 +190,7 @@ pub struct CompactMetadata {
     size: usize,
     video: Vec<VideoFormat>,
     audio: Vec<AudioFormat>,
+    #[serde(skip_serializing_if = "Vec::is_empty")]
     subtitle: Vec<SubtitleFormat>,
 }