Split VideoEncoder example

bindings/python/examples/v3/VideoEncoder/build_syntax.py

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+import depthai as dai
+
+# Capture Ctrl+C and set a flag to stop the loop
+import signal
+import sys
+import time
+
+stopped = False
+def signal_handler(sig, frame):
+    global stopped
+    print('You pressed Ctrl+C!, stopping video saving...')
+    stopped = True
+signal.signal(signal.SIGINT, signal_handler)
+
+class VideoSaver(dai.node.HostNode):
+    def __init__(self):
+        dai.node.HostNode.__init__(self)
+        self.file_handle = open('video.h265', 'wb')
+
+    def build(self, *args):
+        self.link_args(*args)
+        return self
+
+    def process(self, frame: dai.EncodedFrame):
+        frame.getData().tofile(self.file_handle)
+
+with dai.Pipeline() as pipeline:
+    camRgb = pipeline.create(dai.node.Camera).build(
+            boardSocket = dai.CameraBoardSocket.CAM_A,
+            videoSize = (1920, 1080))
+    encoded = pipeline.create(dai.node.VideoEncoder).build(camRgb.video,
+            frameRate = 30,
+            profile = dai.VideoEncoderProperties.Profile.H265_MAIN)
+    saver = pipeline.create(VideoSaver).build(encoded.out)
+
+    pipeline.start()
+    print("Started to save video to video.h265")
+    print("Press Ctrl+C to stop")
+    while pipeline.isRunning() and not stopped:
+        time.sleep(0.1)
+    pipeline.stop()
+    pipeline.wait()
+    saver.file_handle.close()
+
+print("To view the encoded data, convert the stream file (.h265) into a video file (.mp4) using a command below:")
+print("ffmpeg -framerate 30 -i video.h265 -c copy video.mp4")