I have an h265 file that was recorded on the oak-d. I am currently attempting to replay that file using the oak-d in order to run a custom model on each frame. I want to run the model after the original recording has finished which is why I am attempting to use the replay feature.
I am attempting to roughly follow the example here, but I'm having a lot of difficulty pulling the frames from the video. For my current test, I am simply trying to read the first few frames from the h265 file and save them to a new video file.
Here is my current code:
from depthai_sdk import OakCamera, RecordType
import depthai as dai
parser = argparse.ArgumentParser()
parser.add_argument('-p', '--path', default="data", type=str, help="Path to the stored replay")
args = parser.parse_args()
with open('video2.h265', 'wb') as videoFile:
with OakCamera(replay=args.path) as oak:
color = oak.create_camera('color', encode='H265')
nn = oak.create_nn('mobilenet-ssd', color)
# oak.record([color.out.encoded], './', RecordType.VIDEO)
pipeline = oak.build()
q = oak.device.getOutputQueue('1_bitstream') # Create output queue after calling start()
frame_count = 0
while oak.running() and frame_count < 450:
h265Packet = q.get() # Blocking call, will wait until a new data has arrived
h265Packet.getData().tofile(videoFile) # Appends the packet data to the opened file
# Keyboard interrupt (Ctrl + C) detected
# xout = pipeline.create(dai.node.XLinkOut)
# # color.node.video.link(xout.input)
# videoEnc = pipeline.create(dai.node.VideoEncoder)
# videoEnc.setDefaultProfilePreset(30, dai.VideoEncoderProperties.Profile.H265_MAIN)
Here is the error I receive when running this code:
pi@oak2:~/jack $ python replay_example.py -p /home/pi/storage/2023-07-12/color.h265
[2023-07-19 15:24:19] INFO [root.__init__:111] Available streams from recording: ['color']
[18443010D1805B1200] [1.1] [2.671] [DetectionNetwork(3)] [warning] Network compiled for 6 shaves, maximum available 15, compiling for 7 shaves likely will yield in better performance
[18443010D1805B1200] [1.1] [4.083] [VideoEncoder(1)] [critical] Out of memory while creating pool for 'bitstream' frames. Number of frames: 4 each with size: 12604928B
After printing this out, the code just hangs, with
q.has() always being False.
*Note - working through the example it looks like I would be able to pull the model output without trouble, however I will need to rewrite some of the video file as the model I plan to use will act as a filter for which frames to save and which to not save for future use. I would like to use the oak encoder to write the frames we want to save, as I am running the oak on a rasberry pi, and using cv2 to write those frames via the rasberry pi is too slow to be viable.