Used to create thumbnails from videos. Both normal thumbnails, and sprites. The app can run in one of two modes: cli and http server.
- FFmpeg
- ImageMagick
- libmagic-dev
First make sure the requirements are installed, and then install the service-thumbnails using:
go install github.com/dulo-tech/service-thumbnails
Linux binaries may be downloaded from the releases page.
Two types of thumbnails may be generated: simple and sprite.
A simple thumbnail is a single frame from the video. By default the size (width/height) of the thumbnail is the size of the video frame. A video with frames 640x480 will result in a thumbnail that is 640x480. The size can be adjusted by using the 'width' option from the command line app or HTTP server.
Example:
A sprite thumbnail is two or more thumbnails from two or more video frames that have been stitched together into a single image. By default each thumbnail will be 180px wide, but can be changed using the 'width' option from the command line app or HTTP server. By default the sprite will always include 30 frames from the video, which have been chosen evenly from the full length of the video. That can be changed using the 'count' option from the command line or HTTP server.
Example:
Generating a simple thumbnail:
service-thumbnails -i video.mp4 -o thumb.jpg
Generating a sprite:
service-thumbnails -t sprite -i video.mp4 -o thumb.jpg
Generating thumbnails from several videos at once:
service-thumbnails -i video1.mp4,video2.mp4,video3.mp4 -o thumb%02.jpg
Start service-thumbnails using the -m http switch:
service-thumbnails -m http -h 127.0.0.1 -p 8888
The app will being running as an HTTP server. The server responds with thumbnails when videos are POSTed to it. For example using curl:
curl --form video=@video.mp4 -o thumb.jpg http://127.0.0.1:8888/thumbnail/simple
The server returns the thumbnail, which curl writes to thumb.jpg. The server also has a help page which can be viewed at http://127.0.0.1:8888/help, and it implements the Pulse Protocol.
The command line options can also be specified in a configuration file. Pass the path to the file using the -conf switch. When the -conf switch isn't used the app will try to read from $HOME/.service-thumbnails.conf. Finally the app will try to read from /etc/service-thumbnails.conf.
See the example configuration file for format and possible values.
- The server needs to validate upload mime types.