-#define FORMAT_TEXT N_("output format")
-#define FORMAT_LONGTEXT N_("one of \"u8\", \"s8\", \"u16\", \"s16\", " \
- "\"u16_le\", \"s16_le\", \"u16_be\", " \
- "\"s16_be\", \"fixed32\", \"float32\" or \"spdif\"")
-#define WAV_TEXT N_("add wave header")
-#define WAV_LONGTEXT N_("instead of writing a raw file, you can add a wav " \
- "header to the file")
-
-static char *format_list[] = { "u8", "s8", "u16", "s16", "u16_le", "s16_le",
- "u16_be", "s16_be", "fixed32", "float32",
- "spdif", NULL };
+#define FORMAT_TEXT N_("Output format")
+#define FORMAT_LONGTEXT N_("One of \"u8\", \"s8\", \"u16\", \"s16\", " \
+ "\"u16_le\", \"s16_le\", \"u16_be\", \"s16_be\", \"fixed32\", " \
+ "\"float32\" or \"spdif\"")
+#define CHANNELS_TEXT N_("Number of output channels")
+#define CHANNELS_LONGTEXT N_("By default, all the channels of the incoming " \
+ "will be saved but you can restrict the number of channels here.")
+
+#define WAV_TEXT N_("Add WAVE header")
+#define WAV_LONGTEXT N_("Instead of writing a raw file, you can add a WAV " \
+ "header to the file.")
+
+static const char *format_list[] = { "u8", "s8", "u16", "s16", "u16_le",
+ "s16_le", "u16_be", "s16_be", "fixed32",
+ "float32", "spdif" };