videoloop | Create loops of a video with fade transition
kandi X-RAY | videoloop Summary
kandi X-RAY | videoloop Summary
Video Loop. Create loops of a video with fade transition.
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- Main entry point .
- Format a number of seconds .
- Check that the value is a positive integer .
- Concatenate multiple video files .
- Returns the duration of a video .
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Trending Discussions on videoloop
QUESTION
I'm trying to learn how to use threading and specifically concurrent.futures.ThreadPoolExecutor
this is because I need to return a numpy.array
from a function I want to run concurrently.
The end goal is to have one process running a video loop of an application, while another process does object detection and GUI interactions. The result()
keyword from the concurrent.futures library allows me to do this.
The issue is my code runs once, and then seems to lock up. I'm actually unsure what happens as when I step through it in the debugger it runs once, then the debugger goes blank and I literally cannot step through and no error is thrown.
The code appears to lock up on the line: notepadWindow = pygetwindow.getWindowsWithTitle('Notepad')[0]
I get exactly one loop, the print
statement prints once the loop restarts and then it halts at pygetwindow
I don't know much about the GIL but I have tried using the max_workers=1
argument on ThreadPoolExecutor()
which doesn't make a difference either way and I was under the impression concurrent.futures
allows me to bypass the lock.
How do I run videoLoop
as a single thread making sure to return DetectionWindow
every iteration?
ANSWER
Answered 2022-Mar-28 at 11:08A ThreadPoolExecutor won't help you an awful lot here, if you want a continuous stream of frames.
Here's a reworking of your code that uses a regular old threading.Thread
and puts frames (and their capture timestamps, since this is asynchronous) in a queue.Queue
you can then read in another (or the main) thread.
The thread has an otherwise infinite loop that can be stopped by setting the thread's exit_signal
.
(I didn't test this, since I'm presently on a Mac, so there may be typos or other problems.)
QUESTION
The AVQueuePlayer does not seek to the given time. Video always starts playing at the beginning. Using the default controls, I can seek manually to a desired point. I am using a m3u8 HLS stream.
...ANSWER
Answered 2022-Feb-12 at 17:17Found out the problem.
I need to seek on the currentItem, not on the AVQueuePlayer. Did not found a clue on why in the documentation.
QUESTION
I am trying to implement a JavaFx Application where the filename of an mp4 and the filename of an png are compared, and if they are equal or one contains the other, right now there is a sysout.
So far I am using two loops to go through the lists of files and I am retrieving both files, but there is one problem: I have more pngs than mp4s, and that is why I am getting an ArrayOutOfBounds exception. I could not really find a workaround for this. The problem lies in the final if statement.
...ANSWER
Answered 2020-Sep-15 at 15:52You need the second for loop to be nested inside the first loop. and your last if condition should be inside the inner for loop.
You also need another condition in your for loop where you check if the second file name contains the first one.
QUESTION
I have a tello ryze drone, which has got a camera onboard. I am connecting to the drone in order to receive the video over wifi. My system is windows 10 and I am using python 2.7.
I am receiving a h264 bytecode and i use the libh264 decoder from tello in order to get the frames of the video, which i also display in my UI. What i need to do is to save this video as a file on my computer and i have problems with this. I am able to make a snapshot with opencv and save it as an image, this isn't a problem. But making a video isn't working for some reason. I read many posts here like this one but they dont work out for me. I am getting either an error or i get a very small video file, which doesnt open. My Frames are List of List with RGB values like:
...ANSWER
Answered 2020-Feb-26 at 09:26I found the solution, so i will post it here if someone needs the same thing. I used the following blog and modified the code to do my work, you can find the post here
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Install videoloop
You can use videoloop like any standard Python library. You will need to make sure that you have a development environment consisting of a Python distribution including header files, a compiler, pip, and git installed. Make sure that your pip, setuptools, and wheel are up to date. When using pip it is generally recommended to install packages in a virtual environment to avoid changes to the system.
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