6 Downmix surround to Dolby Pro-Logic at the OS/driver level in Windows 7? 2011-02-06T06:35:41.520

2 ffmpeg's Dolby Pro Logic feature is leaking center channel into surround channel 2015-11-27T16:07:21.520

1 finding a 5.1 to pro logic converter 2011-05-20T03:07:23.047