Video-Snapshot | official implementation of Video Snapshot | Video Utils library
kandi X-RAY | Video-Snapshot Summary
kandi X-RAY | Video-Snapshot Summary
The official implementation of Video Snapshot: Single Image Motion Expansion via Invertible Motion Embedding. In TPAMI, 2020.
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Top functions reviewed by kandi - BETA
- Runs the color encoder
- Encodes images
- Transformer decoder
- Saves images from a single image
- Read a batch of images
- 2d convolutional convolution layer
- Check if path exists
- Element - wise element - wise operation
- Computes the mean PSNR between two images
- Calculates the similarity between two images
- Calculate noise ratio
- R Mean squared error
- Calculate the PSNR for two images
Video-Snapshot Key Features
Video-Snapshot Examples and Code Snippets
Community Discussions
Trending Discussions on Video-Snapshot
QUESTION
Consider using libVLC for Android, based on the official recommended way.
I went through the compilation process without problems (but took some time).
I'd like to have the snapshot functionality, but I've found some very old (2-3 years old) threads around which states that this feature is still not available (2016) at least "not out of the box' by this thread (2014).
Snapshot functionality is available on other platforms.
Also there are some solutions where they switch from SurfaceView to TextureView.
However I prefer sticking to SurfaceView as TextureView brings some performance drawbacks (according to this topic).
Also on an official android page it's stated:
In API 24 and higher, it's recommended to implement SurfaceView instead of TextureView.
In 2014 there were only 2 dependecies of the snapshot function based on the thread I've mentioned earlier:
- enabling sout module
- enabling png as encoder
When looking the "VLC-Android" repository of VideoLAN, there is a file responsible for building libVLC.
In line 396, sout module seems to be enabled by default.
Before compilation I've enabled png as encoder in vlc/contrib/src/ffmpeg/rules.mak as pointed out in the forum.
However there is still no function related to snapshot in either org.videolan.libvlc.MediaPlayer or in org.videolan.libvlc.VLCVideoLayout.
The question is how can I create a snapshot (either into file, or into buffer) on Android with libVLC, without using TextureView? Update1:Fact1: Found the reason on why it's unavailable on Android. In VLC's core source tree, in file lib/video.c on line 145 there is the snapshot function with a massive FIXME warning:
...ANSWER
Answered 2020-Jan-06 at 03:01A few ways to go about this...
Here's a crossplatform thumbnailer example using libvlc https://code.videolan.org/mfkl/libvlcsharp-samples/blob/master/PreviewThumbnailExtractor.Skia/Program.cs It should work on Android without much editing since it doesn't use any OS specific feature in the script. Should be able to translate it to Java/Kotlin as well I guess.
There is a libvlc function that allows to take snapshot. Just go the time you want and call it. https://www.videolan.org/developers/vlc/doc/doxygen/html/group__libvlc__video.html#ga9b0a3870ce962aa0358050b2d5a59143
In VLC Android, the medialibrary now manages thumbnails.
LibVLC 4 now bundles a thumbnailer https://github.com/videolan/vlc/blob/d40eb012b10cc355ea9ad7a13eaf494b8e826d78/include/vlc/libvlc_media.h#L845
Good luck.
Community Discussions, Code Snippets contain sources that include Stack Exchange Network
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No vulnerabilities reported
Install Video-Snapshot
You can use Video-Snapshot 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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