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import { Event } from 'main.core';
import getResizedImageSize from './get-resized-image-size';
import type { ResizeImageOptions } from '../types/resize-image-options';
import convertCanvasToBlob from './convert-canvas-to-blob';
import createImagePreviewCanvas from './create-image-preview-canvas';
const createVideoPreview = (
blob: Blob,
options: ResizeImageOptions = { width: 300, height: 3000 },
seekTime: number = 10,
): Promise => {
return new Promise((resolve, reject) => {
const video: HTMLVideoElement = document.createElement('video');
video.setAttribute('src', URL.createObjectURL(blob));
video.load();
Event.bind(video, 'error', (error) => {
reject(error || 'Error while loading video file');
});
Event.bind(video, 'loadedmetadata', () => {
video.currentTime = video.duration < seekTime ? 0 : seekTime;
Event.bind(video, 'seeked', () => {
const imageData = { width: video.videoWidth, height: video.videoHeight };
const { targetWidth, targetHeight } = getResizedImageSize(imageData, options);
if (!targetWidth || !targetHeight)
{
reject();
return;
}
const canvas: HTMLCanvasElement = createImagePreviewCanvas(video, targetWidth, targetHeight);
const { quality = 0.92, mimeType = 'image/jpeg' } = options;
convertCanvasToBlob(canvas, mimeType, quality)
.then((blob: Blob) => {
resolve({
preview: blob,
width: targetWidth,
height: targetHeight,
});
})
.catch(() => {
reject();
})
;
});
});
});
};
export default createVideoPreview;