@svta/common-media-library/dist/iso/bmff/parsers/mvhd.js

A common library for media playback in JavaScript

import { UINT } from '../fields/UINT.js';
/**
 * Parse a Box from an IsoView
 *
 * @param view - The IsoView to read data from
 *
 * @returns A parsed Box
 *
 * @group ISOBMFF
 *
 * @beta
 */
export function mvhd(view) {
    const { readUint, readTemplate, readArray } = view;
    const { version, flags } = view.readFullBox();
    const size = (version == 1) ? 8 : 4;
    return {
        version,
        flags,
        creationTime: readUint(size),
        modificationTime: readUint(size),
        timescale: readUint(4),
        duration: readUint(size),
        rate: readTemplate(4),
        volume: readTemplate(2),
        reserved1: readUint(2),
        reserved2: readArray(UINT, 4, 2),
        matrix: readArray(UINT, 4, 9),
        preDefined: readArray(UINT, 4, 6),
        nextTrackId: readUint(4),
    };
}
;
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