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read from ffmpeg

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Blake Blackshear 2020-01-30 07:10:32 -06:00
parent 4c618daa90
commit 3f34c57e31
1 changed files with 26 additions and 6 deletions
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30
start_no_thread.py
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@ -4,9 +4,11 @@ import threading
import queue
import itertools
from collections import defaultdict
from statistics import mean
import cv2
import imutils
import numpy as np
import subprocess as sp
from scipy.spatial import distance as dist
import tflite_runtime.interpreter as tflite
from tflite_runtime.interpreter import load_delegate
@ -413,24 +415,40 @@ def main():
frames = 0
# frame_queue = queue.Queue(maxsize=5)
# frame_cache = {}
# frame_shape = (1080,1920,3)
frame_shape = (720,1280,3)
frame_shape = (1080,1920,3)
# frame_shape = (720,1280,3)
frame_size = frame_shape[0]*frame_shape[1]*frame_shape[2]
frame = np.zeros(frame_shape, np.uint8)
motion_detector = MotionDetector(frame_shape, resize_factor=4)
motion_detector = MotionDetector(frame_shape, resize_factor=6)
object_detector = ObjectDetector('/lab/mobilenet_ssd_v2_coco_quant_postprocess_edgetpu.tflite', '/lab/labelmap.txt')
# object_detector = ObjectDetector('/lab/detect.tflite', '/lab/labelmap.txt')
object_tracker = ObjectTracker(10)
# f = open('/debug/input/back.rgb24', 'rb')
f = open('/debug/back.raw_video', 'rb')
# f = open('/debug/back.raw_video', 'rb')
# f = open('/debug/ali-jake.raw_video', 'rb')
# -hwaccel vaapi -hwaccel_device /dev/dri/renderD128 -hwaccel_output_format yuv420p -i output.mp4 -f rawvideo -pix_fmt rgb24 pipe:
ffmpeg_cmd = (['ffmpeg'] +
['-hide_banner','-loglevel','panic'] +
['-hwaccel','vaapi','-hwaccel_device','/dev/dri/renderD129','-hwaccel_output_format','yuv420p'] +
['-i', '/debug/input/output.mp4'] +
# ['-i', '/debug/back-ali-jake.mp4'] +
['-f','rawvideo','-pix_fmt','rgb24'] +
['pipe:'])
print(" ".join(ffmpeg_cmd))
ffmpeg_process = sp.Popen(ffmpeg_cmd, stdout = sp.PIPE, bufsize=frame_size)
total_detections = 0
start = datetime.datetime.now().timestamp()
frame_times = []
while True:
start_frame = datetime.datetime.now().timestamp()
frame_detections = 0
frame_bytes = f.read(frame_size)
frame_bytes = ffmpeg_process.stdout.read(frame_size)#f.read(frame_size)
if not frame_bytes:
break
frame_time = datetime.datetime.now().timestamp()
@ -584,6 +602,7 @@ def main():
object_tracker.match_and_update(frame_time, detections)
total_detections += frame_detections
frame_times.append(datetime.datetime.now().timestamp()-start_frame)
# if (frames >= 700 and frames <= 1635) or (frames >= 2500):
# if (frames >= 700 and frames <= 1000):
@ -614,6 +633,7 @@ def main():
duration = datetime.datetime.now().timestamp()-start
print(f"Processed {frames} frames for {duration:.2f} seconds and {(frames/duration):.2f} FPS.")
print(f"Total detections: {total_detections}")
print(f"Average frame processing time: {mean(frame_times)*1000:.2f}ms")
if __name__ == '__main__':
main()