rg3/youtube-dl — pull request #4248 by ivan (2014-11-20 06:43:01+00:00)
Title: Copy the mtime from the oldest source file to the file created by ffmpeg

This fixes #4245.

I tested this with Python 2.7.8 and Python 3.4.1 on Windows 7. The mtime is now correctly set when using `-f bestvideo+bestaudio`.

`--no-mtime` still works as expected.