video-to-image | Converting video to image sequence | Computer Vision library
kandi X-RAY | video-to-image Summary
kandi X-RAY | video-to-image Summary
Converting video to image sequence with per frame blur detection.
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Top functions reviewed by kandi - BETA
- Computes the variance of the image .
video-to-image Key Features
video-to-image Examples and Code Snippets
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QUESTION
Note for the readers: I tag this question as "codenameone" and "objective-c" because it refers to the use of a native interface, which implementation is in Objective-C, inside a Java application. If you don't know what is a native interface, it's explained here: https://www.codenameone.com/how-do-i---access-native-device-functionality-invoke-native-interfaces.html - I don't know if my code doesn't work because it have issues in the Java part or in the Objective-C part
In my previous question "From video to image in Codename One", the answer was that "the only way to do that is through native code".
I tried to write a native interface (for iOS, at the moment) to do that, but the preview is not shown. I merged some code that I found on Stack Overflow, because I'm not an Objective-C programmer. It compiles without errors, I attach the code and the native log.
Could you help me to fix my code, please? Thank you
main class:
...ANSWER
Answered 2019-Sep-24 at 03:25Make sure the URL for native doesn't include the file:
prefix. Also wrap the native code in the iOS native thread as explained here.
QUESTION
I'm extracting a frame from a video using ffmpeg and golang. If I have a video in bytes instead of saved on disk as an .mp4, how do I tell ffmpeg to read from those bytes without having to write the file to disk, as that is much slower?
I have this working reading from a file, but I'm not sure how to read from bytes.
I've looked at the ffmpeg
documentation here but only see output examples instead of input examples.
ANSWER
Answered 2019-Sep-08 at 04:07You can make ffmpeg
to read data from stdin rather than reading file from disk, by specifying -
as the value of the option -i
. Then just pass your video bytes as stdin to the command.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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Install video-to-image
You can use video-to-image 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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