From d324742a17598f1b6de5db63b6858ef62355dfce Mon Sep 17 00:00:00 2001
From: arichi <sergey.korabanov@gmail.com>
Date: Sun, 18 Dec 2016 21:08:54 +0800
Subject: [PATCH] throttling_start should start with None

---
 youtube_dl/downloader/http.py | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/youtube_dl/downloader/http.py b/youtube_dl/downloader/http.py
index 5ac132773..f9cd23a2d 100644
--- a/youtube_dl/downloader/http.py
+++ b/youtube_dl/downloader/http.py
@@ -227,7 +227,7 @@ class HttpFD(FileDownloader):
         now = None  # needed for slow_down() in the first loop run
         before = start  # start measuring
         peak_rate = 0
-        throttling_start = time.time()
+        throttling_start = None
         throttling_threshold = None
         throttling_start_size = 0
         while True: