decord | efficient video loader for deep learning | Video Utils library
kandi X-RAY | decord Summary
kandi X-RAY | decord Summary
[Downloads] Decord is a reverse procedure of Record. It provides convenient video slicing methods based on a thin wrapper on top of hardware accelerated video decoders, e.g. Decord was designed to handle awkward video shuffling experience in order to provide smooth experiences similar to random image loader for deep learning. Decord is also able to decode audio from both video and audio files. One can slice video and audio together to get a synchronized result; hence providing a one-stop solution for both video and audio decoding.
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decord Key Features
decord Examples and Code Snippets
Lines of Code : 46License : Permissive (MIT License)
Copydef _get_frames(
self, video_reader: decord.VideoReader, offset: int,
) -> List[np.ndarray]:
""" Get frames at sample length.
Args:
video_reader: the decord tool for parsing videos
offset: where frames = []
path = "/path/to/my/video/file.mp4"
cap = cv2.VideoCapture(path)
ret = True
while ret:
ret, img = cap.read() # read one frame from the 'capture' object; img is (H, W, C)
if ret:
frames.append(img)
video = np.stfrom decord import VideoReader
from matplotlib import pyplot as plt
vr = VideoReader("nature.mp4")
avg_fps = 0.2
for i in range(0, 1500, int(30/min(30,avg_fps))):
frame = vr[i].asnumpy()
plt.imsave(f'{name}_Frame_{i}.jpg',frame)
<Community Discussions
Trending Discussions on decord
QUESTION
Let say I have a function that handles request body in general
...ANSWER
Answered 2021-Jul-09 at 13:40"Is it possible to encapsulate the type assertion login inside the GetReqBody function?" -- No, it's not possible, not in any useful way.
However you could simplify your code thus:
QUESTION
package link : https://github.com/dmlc/decord
I am using decord to extract frames and it does a good job, by default it uses video fps. Lets say i need to extract frame at 0.2 fps.
example : i have a video at 48 seconds and its fps is 30. when i extract i get 1440 frames
But, I need to specify the fps like 0.2 so , the output should be 10 frames.
PS. In ffmpeg, we can specify the fps while extracting. I am asking in the same way.
My code:
...ANSWER
Answered 2020-Oct-05 at 02:01maybe you can skip frame like this:
QUESTION
I am trying to encrypt a UTF-8 string on Python with AES and decrypt it in Kotlin, here is the Python encrypt part:
...ANSWER
Answered 2020-Jun-10 at 07:02The user President James K. Polk answered this in a comment, the mistake was that I hashed the key only in the Python code and not in Kotlin... self.key = hashlib.sha256(key.encode()).digest()
I tried finding the problem like a whole week, I really feel so dumb, thank you President James K. Polk.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install decord
✓ Mac OS >= 10.12, python>=3.5
✓ Windows
Install the system packages for building the shared library, for Debian/Ubuntu users, run:. Clone the repo recursively(important).
First, install git, cmake, ffmpeg and python. You can use [Chocolatey](https://chocolatey.org/) to manage packages similar to Linux/Mac OS.
Second, install [Visual Studio 2017 Community](https://visualstudio.microsoft.com/), this my take some time.
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