From 4443ef264d92fb80aecd21093ab7e532349924f2 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Frederik=20=E2=80=9CFreso=E2=80=9D=20S=2E=20Olesen?=
 <freso.dk@gmail.com>
Date: Sun, 17 Feb 2019 13:31:52 +0100
Subject: [PATCH] [youtube] Duplicate upload_date to release_date
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Currently if you use `%(release_date)s` in file naming templates you will
get an “NA” from YouTube downloads, because YouTube doesn’t distinguish
between “release” and “upload” and only provides “upload” date. This can be
annoying if you’re also using `youtube-dl` for other sites that do
distinguish between the two.

This change simply duplicates the found `upload_date` into `release_date`
so both variables can be used for YouTube downloads.

Fixes https://github.com/rg3/youtube-dl/issues/18704
---
 youtube_dl/extractor/youtube.py | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/youtube_dl/extractor/youtube.py b/youtube_dl/extractor/youtube.py
index c8bf98b58..fef43fe35 100644
--- a/youtube_dl/extractor/youtube.py
+++ b/youtube_dl/extractor/youtube.py
@@ -2025,6 +2025,10 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
                 video_webpage, 'upload date', default=None)
         upload_date = unified_strdate(upload_date)
 
+        # release date
+        # YouTube doesn't provide a release date, so reuse upload date
+        release_date = upload_date
+
         video_license = self._html_search_regex(
             r'<h4[^>]+class="title"[^>]*>\s*License\s*</h4>\s*<ul[^>]*>\s*<li>(.+?)</li',
             video_webpage, 'license', default=None)
@@ -2184,6 +2188,7 @@ class YoutubeIE(YoutubeBaseInfoExtractor):
             'channel_id': channel_id,
             'channel_url': channel_url,
             'upload_date': upload_date,
+            'release_date': release_date,
             'license': video_license,
             'creator': video_creator or artist,
             'title': video_title,