kopia lustrzana https://github.com/mifi/lossless-cut
35 wiersze
1.1 KiB
JavaScript
35 wiersze
1.1 KiB
JavaScript
const bluebird = require('bluebird');
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const fs = require('fs');
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const mime = require('mime-types');
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const strongDataUri = require('strong-data-uri');
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const { formatDuration, getOutPath, transferTimestampsWithOffset } = require('./util');
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bluebird.promisifyAll(fs);
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function getFrameFromVideo(video, format) {
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const canvas = document.createElement('canvas');
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canvas.width = video.videoWidth;
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canvas.height = video.videoHeight;
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canvas.getContext('2d').drawImage(video, 0, 0);
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const dataUri = canvas.toDataURL(`image/${format}`);
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return strongDataUri.decode(dataUri);
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}
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async function captureFrame(customOutDir, filePath, video, currentTime, captureFormat) {
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const buf = getFrameFromVideo(video, captureFormat);
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const ext = mime.extension(buf.mimetype);
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const time = formatDuration(currentTime, true);
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const outPath = getOutPath(customOutDir, filePath, `${time}.${ext}`);
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await fs.writeFileAsync(outPath, buf);
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const offset = -video.duration + currentTime;
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return transferTimestampsWithOffset(filePath, outPath, offset);
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}
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module.exports = captureFrame;
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