From 7e62c2eb6d13ebf0fdd24c90c2f439177d485081 Mon Sep 17 00:00:00 2001
From: =?UTF-8?q?Jaime=20Marqui=CC=81nez=20Ferra=CC=81ndiz?=
 <jaime.marquinez.ferrandiz@gmail.com>
Date: Sat, 6 Feb 2016 18:51:05 +0100
Subject: [PATCH] [FFmpegSubtitlesConvertorPP] fix not working when srt is used
 as the intermediate format between ttml/dfxp and other format

It was trying to use the ttml/dfxp file with ffmpeg, which doesn't have support for them.
I broke it in e04398e397d4a4f7e0d0994355d5a94c22441e7c.
---
 youtube_dl/postprocessor/ffmpeg.py | 1 +
 1 file changed, 1 insertion(+)

diff --git a/youtube_dl/postprocessor/ffmpeg.py b/youtube_dl/postprocessor/ffmpeg.py
index 22d7ac65a..6daa6a8b4 100644
--- a/youtube_dl/postprocessor/ffmpeg.py
+++ b/youtube_dl/postprocessor/ffmpeg.py
@@ -508,6 +508,7 @@ class FFmpegSubtitlesConvertorPP(FFmpegPostProcessor):
 
                 with io.open(srt_file, 'wt', encoding='utf-8') as f:
                     f.write(srt_data)
+                old_file = srt_file
 
                 ext = 'srt'
                 subs[lang] = {