diff --git a/include/libavdevice/avdevice.pxd b/include/libavdevice/avdevice.pxd
index bc9b4adea..31c654b10 100644
--- a/include/libavdevice/avdevice.pxd
+++ b/include/libavdevice/avdevice.pxd
@@ -1,12 +1,5 @@
-
 cdef extern from "libavdevice/avdevice.h" nogil:
-
-    cdef int   avdevice_version()
+    cdef int avdevice_version()
     cdef char* avdevice_configuration()
     cdef char* avdevice_license()
-    void       avdevice_register_all()
-
-    AVInputFormat * av_input_audio_device_next(AVInputFormat *d)
-    AVInputFormat * av_input_video_device_next(AVInputFormat *d)
-    AVOutputFormat * av_output_audio_device_next(AVOutputFormat *d)
-    AVOutputFormat * av_output_video_device_next(AVOutputFormat *d)
+    void avdevice_register_all()