AwesomeVideo | 基于Spring Boot的《倾心短视频》小程序的后端API服务 | Object-Relational Mapping library
kandi X-RAY | AwesomeVideo Summary
kandi X-RAY | AwesomeVideo Summary
基于Spring Boot的《倾心短视频》小程序的后端API服务
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Top functions reviewed by kandi - BETA
- Register user
- Set user id
- Applies extra parameters to the user
- Delete a user
- Show by user id
- Show user s myfollow
- Get comments for a video
- Login user
- Query user id
- Upload new face
- Verify if a user like a user
- Checks if a user is like movie
- Query if follower is follow
- Log movie likes
- Create REST API
- Query by user id
- Query by user id
- Query publisher
- Get all comments
- Method to get all records
- Region > save
AwesomeVideo Key Features
AwesomeVideo Examples and Code Snippets
Community Discussions
Trending Discussions on AwesomeVideo
QUESTION
i noticed a behaviour that i didn't find an answer for in the documentation.
when I capture a stream from camera using VideoCapture(0), check code below I noticed that some frames are skipped because of the delay I put in the code.
but when I playback a video, it doesn't skip the frames.
...ANSWER
Answered 2020-Sep-29 at 14:15You cannot obtain all the frames from the real world. The frame rate would be infinite, which is impossible. The camera tries to capture as many frames as possible, in the limits of capture duration and processing time. By adding sleep
, you increase the processing time.
A recorded video has discrete samples of frames from the real world, which is sufficient for us to perceive the stream as if it flows infinitely. Human eye captures 24 frames per second. If the purpose of the video was to use it for birds, the frame rate should be at least 80.
Having known these, it should be clear why VideoCapture
behaves like you said. The camera tries to capture as many frames as possible from the real world. As for a recorded video, you already have all the frames.
As a footnote, you should use cv2.waitKey(1)
instead of time.sleep(1)
after imshow
for displaying purposes. See documentation of imshow
.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
Vulnerabilities
No vulnerabilities reported
Install AwesomeVideo
You can use AwesomeVideo like any standard Java library. Please include the the jar files in your classpath. You can also use any IDE and you can run and debug the AwesomeVideo component as you would do with any other Java program. Best practice is to use a build tool that supports dependency management such as Maven or Gradle. For Maven installation, please refer maven.apache.org. For Gradle installation, please refer gradle.org .
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