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Speeding up video frames loading #52

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Speeding up video frames loading #52

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8a0aba7
speeding up data loading
Jun 18, 2018
5990b0a
minor api changes
dimaxano Jun 27, 2018
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23 changes: 21 additions & 2 deletions lipnet/lipreading/videos.py
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Original file line number Diff line number Diff line change
Expand Up @@ -116,8 +116,13 @@ def from_frames(self, path):
self.handle_type(frames)
return self

def from_video(self, path):
frames = self.get_video_frames(path)
def from_video(self, path, use_opencv=False):
if use_opencv:
import cv2
frames = self.get_video_frames_cv2(path)
else:
frames = self.get_video_frames(path)

self.handle_type(frames)
return self

Expand Down Expand Up @@ -196,6 +201,20 @@ def get_video_frames(self, path):
frames = np.array([frame for frame in videogen])
return frames

def get_video_frames_cv2(self, path):
reader = cv2.VideoCapture(path)

frames = []
while True:
ret, frame = reader.read()

if not ret:
break
else:
frames.append(frame[...,::-1])

return np.array(frames)

def set_data(self, frames):
data_frames = []
for frame in frames:
Expand Down