add example for recv av

example/recv_av.py

@@ -0,0 +1,76 @@
+import sys
+import time
+import numpy as np
+import av
+from fractions import Fraction
+import NDIlib as ndi
+
+
+def main():
+
+    if not ndi.initialize():
+        return 0
+
+    ndi_find = ndi.find_create_v2()
+
+    if ndi_find is None:
+        return 0
+
+    sources = []
+    while not len(sources) > 0:
+        print('Looking for sources ...')
+        ndi.find_wait_for_sources(ndi_find, 1000)
+        sources = ndi.find_get_current_sources(ndi_find)
+
+    recv_create_desc = ndi.RecvCreateV3()
+    recv_create_desc.color_format = ndi.RECV_COLOR_FORMAT_BGRX_BGRA
+
+    ndi_recv = ndi.recv_create_v3(recv_create_desc)
+
+    if ndi_recv is None:
+        return 0
+
+    ndi.recv_connect(ndi_recv, sources[0])
+
+    ndi.find_destroy(ndi_find)
+
+    fps = 30
+    output = av.open('output.mov', mode='w')
+    stream = output.add_stream('mpeg4', rate=fps)
+    stream.width = 1920
+    stream.height = 1080
+    stream.pix_fmt = 'yuv420p'
+    stream.bit_rate = 8e+6
+    stream.bit_rate_tolerance = 12e+6
+    stream.codec_context.time_base = Fraction(1, fps)
+
+    start = time.time()
+    while time.time() - start < 1.0 * 30:
+        t, v, _, _ = ndi.recv_capture_v2(ndi_recv, 5000)
+
+        if t == ndi.FRAME_TYPE_VIDEO:
+            print('Video data received (%dx%d).' % (v.xres, v.yres))
+            frame_time = time.time() - start
+            try:
+                frame = av.VideoFrame.from_ndarray(v.data, format='bgra')
+                frame.pts = int(
+                    round(frame_time / stream.codec_context.time_base))
+                for packet in stream.encode(frame):
+                    output.mux(packet)
+            except Exception as e:
+                print(e)
+            ndi.recv_free_video_v2(ndi_recv, v)
+
+    for packet in stream.encode():
+        output.mux(packet)
+
+    output.close()
+
+    ndi.recv_destroy(ndi_recv)
+    ndi.destroy()
+
+    return 0
+
+
+if __name__ == "__main__":
+    sys.exit(main())

example/requirements.txt

@@ -1,3 +1,4 @@
 numpy
 opencv-python
-sounddevice
+sounddevice
+av