From 423986fc09e3c674c2c8ac273d0ef094c379b497 Mon Sep 17 00:00:00 2001
From: JULIAN GARDNER <joolzg@btinternet.com>
Date: Fri, 6 May 2011 17:09:22 +0200
Subject: [PATCH] Allow encodiing empty subtitles.

---
 libavcodec/utils.c | 3 +--
 1 file changed, 1 insertion(+), 2 deletions(-)

diff --git a/libavcodec/utils.c b/libavcodec/utils.c
index 5977d3cf16..fd1c09063f 100644
--- a/libavcodec/utils.c
+++ b/libavcodec/utils.c
@@ -678,8 +678,7 @@ int avcodec_encode_subtitle(AVCodecContext *avctx, uint8_t *buf, int buf_size,
         av_log(avctx, AV_LOG_ERROR, "start_display_time must be 0.\n");
         return -1;
     }
-    if(sub->num_rects == 0 || !sub->rects)
-        return -1;
+
     ret = avctx->codec->encode(avctx, buf, buf_size, sub);
     avctx->frame_number++;
     return ret;