[pitivi] ui: Add comments for translators. Fixes #584416

[Edward Hervey <edwardrv src gnome org>]

commit 0505146b2260e7f0c46c7434c535e21c58cb2f72
Author: Edward Hervey <bilboed bilboed com>
Date:   Mon Jun 1 09:56:31 2009 +0200

    ui: Add comments for translators. Fixes #584416
---
 pitivi/ui/exportsettingswidget.py |    2 ++
 1 files changed, 2 insertions(+), 0 deletions(-)

diff --git a/pitivi/ui/exportsettingswidget.py b/pitivi/ui/exportsettingswidget.py
index 4e0994e..cf00b3a 100644
--- a/pitivi/ui/exportsettingswidget.py
+++ b/pitivi/ui/exportsettingswidget.py
@@ -107,6 +107,7 @@ class ExportSettingsWidget(GladeWidget, Loggable):
             fps = preset[3:5]
             videolist.append(["%s - %s" % (preset[0], fps_map[fps])])
 
+        # i18n: string for custom video width/height/framerate settings
         videolist.append([_("Custom")])
 
         # find out from the project settings which combo to take
@@ -140,6 +141,7 @@ class ExportSettingsWidget(GladeWidget, Loggable):
         audiolist.clear()
         for preset in self.audio_presets:
             audiolist.append([preset[0]])
+        # i18n: string for custom audio rate/depth/channels settings
         audiolist.append([_("Custom")])
 
         idx = 0