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drastically reduced latency

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This commit is contained in:
Cowwan 2024-02-07 13:04:20 -05:00
parent cd06b323c1
commit 8236a8acd0
3 changed files with 22 additions and 22 deletions
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11
webcam.py
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@ -20,14 +20,12 @@ class Webcam():
self.cap = cv2.VideoCapture(0, cv2.CAP_DSHOW)
else:
self.cap = cv2.VideoCapture(0)
#tbh, these settings will make things way slower and frametimes will suffer
#but they're the only way frames bigger than 480p will work
if height > 480:
self.cap.set(cv2.CAP_PROP_FOURCC, cv2.VideoWriter_fourcc(*"MJPG"))
else:
self.cap.set(cv2.CAP_PROP_FOURCC, cv2.VideoWriter_fourcc(*"YUYV"))
self.cap.set(38, 2)
self.webcamBuffer = 2
self.cap.set(38, self.webcamBuffer)
self.cap.set(3, width)
self.cap.set(4, height)
self.cap.set(cv2.CAP_PROP_FPS, fps)
@ -46,6 +44,7 @@ class Webcam():
def start(self):
while self.cap.isOpened():
frameStart= time.perf_counter()
totalFrameLatency = time.perf_counter()
frame = self.getFrame()
self.cameraLatency = time.perf_counter() - frameStart
if self.ret:
@ -53,7 +52,7 @@ class Webcam():
if self.mirror:
frame = cv2.flip(frame, 1)
#this line is where this process sits 90% of the time
self.frameQueue.put([frame, self.cameraLatency])
self.frameQueue.put([frame, self.cameraLatency, totalFrameLatency])
if self.faceQueue.qsize() > 0:
self.updateGamma()
sleepTime = self.targetFrameTime - (time.perf_counter() - frameStart)