[downloader/external] Add another env for proxies in ffmpeg/avconv

Related sources:
https://git.libav.org/?p=libav.git;a=blob;f=libavformat/http.c;h=8fe8d11e1edfdbb04a8726db2c49cfef3f572aac;hb=HEAD#l152
https://git.libav.org/?p=libav.git;a=blob;f=libavformat/tls.c;h=fab243e93e20034e88e619188c13a44a5d8ccdb9;hb=HEAD#l63
https://github.com/FFmpeg/FFmpeg/blob/f8e89d8/libavformat/http.c#L191
https://github.com/FFmpeg/FFmpeg/blob/f8e89d8/libavformat/tls.c#L92

diff --git a/youtube_dl/downloader/external.py b/youtube_dl/downloader/external.py
index 3a73cee1c7c09f6e9350e13b9a041edfdd4a517a..3ff1f9ed4c1dea1c3b30032909651b50f706dfea 100644 (file)
--- a/youtube_dl/downloader/external.py
+++ b/youtube_dl/downloader/external.py
@@ -210,6 +210,7 @@ class FFmpegFD(ExternalFD):
             # args += ['-http_proxy', proxy]
             env = os.environ.copy()
             compat_setenv('HTTP_PROXY', proxy, env=env)
+            compat_setenv('http_proxy', proxy, env=env)
 
         protocol = info_dict.get('protocol')