[pitivi] ui: Add more audio rate values

[Thibault Saunier <tsaunier src gnome org>]

commit 0070f9507ba32e81de744a47d2fac3792938be24
Author: Thibault Saunier <tsaunier gnome org>
Date:   Wed Dec 14 15:57:51 2016 -0300

    ui: Add more audio rate values
    
    opusenc supports rates that we did not properly expose to user
    
    Reviewed-by: Alex Băluț <alexandru balut gmail com>
    Differential Revision: https://phabricator.freedesktop.org/D1556

 pitivi/utils/ui.py |    3 +++
 1 files changed, 3 insertions(+), 0 deletions(-)
---
diff --git a/pitivi/utils/ui.py b/pitivi/utils/ui.py
index e4684f2..27f5851 100644
--- a/pitivi/utils/ui.py
+++ b/pitivi/utils/ui.py
@@ -556,7 +556,10 @@ frame_rates = model((str, object), (
 audio_rates = model((str, int), (
     (_("%d kHz") % 8, 8000),
     (_("%d kHz") % 11, 11025),
+    (_("%d kHz") % 12, 12000),
+    (_("%d kHz") % 16, 16000),
     (_("%d kHz") % 22, 22050),
+    (_("%d kHz") % 24, 24000),
     (_("%.1f kHz") % 44.1, 44100),
     (_("%d kHz") % 48, 48000),
     (_("%d kHz") % 96, 96000)))