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f205deb5e4
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eaec1a7f86
1
.gitignore
vendored
1
.gitignore
vendored
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/.log/
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108
kdenlive.mjs
108
kdenlive.mjs
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#!/usr/bin/zx --quiet
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import { formatDuration } from "./util.mjs";
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import Producer from "./producer.mjs";
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export default class Project {
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constructor(fps) {
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this.producers = [];
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this.clips = [];
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this.fps = fps;
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}
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addProducer(file) {
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this.producers.push(new Producer(file));
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return this;
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}
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async toXML() {
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return `<?xml version='1.0' encoding='utf-8'?>
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<mlt LC_NUMERIC="C" producer="main_bin" version="7.0.0" root="/home/kuba/Downloads">
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<profile frame_rate_num="${
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this.fps
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}" sample_aspect_num="1" display_aspect_den="9" colorspace="601" progressive="1" description="1920x1080 29.90fps" display_aspect_num="16" frame_rate_den="1" width="1920" height="1080" sample_aspect_den="1"/>
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${(
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await Promise.all(this.producers.map((producer) => producer.toXML(this.fps)))
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).join("\n")}
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<playlist id="main_bin">
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<property name="kdenlive:docproperties.activeTrack">2</property>
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<property name="kdenlive:docproperties.audioChannels">2</property>
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<property name="kdenlive:docproperties.audioTarget">1</property>
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<property name="kdenlive:docproperties.disablepreview">0</property>
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<property name="kdenlive:docproperties.documentid">1633881496938</property>
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<property name="kdenlive:docproperties.groups">[
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]
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</property>
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<property name="kdenlive:docproperties.kdenliveversion">21.08.1</property>
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g <property name="kdenlive:docproperties.version">1.02</property>
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<property name="kdenlive:expandedFolders"/>
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<property name="kdenlive:documentnotes"/>
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<property name="xml_retain">1</property>
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${this.producers
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.map((producer) => `<entry producer="producer${producer.index}"/>`)
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.join("\n")}
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</playlist>
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<producer id="black_track" in="00:00:00.000" out="00:08:20.000">
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<property name="length">2147483647</property>
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<property name="eof">continue</property>
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<property name="resource">black</property>
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<property name="aspect_ratio">1</property>
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<property name="mlt_service">color</property>
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<property name="mlt_image_format">rgb24a</property>
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<property name="set.test_audio">0</property>
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</producer>
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<playlist id="playlist0">
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<property name="kdenlive:audio_track">1</property>
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<blank length="1000"/>
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<entry producer="producer1"/>
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</playlist>
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<playlist id="playlist1">
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<property name="kdenlive:audio_track">1</property>
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</playlist>
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<tractor id="tractor0" in="00:00:00.000">
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<property name="kdenlive:audio_track">1</property>
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<property name="kdenlive:timeline_active">1</property>
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<track hide="video" producer="playlist0"/>
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<track hide="video" producer="playlist1"/>
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</tractor>
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<playlist id="playlist2">
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<property name="kdenlive:audio_track">1</property>
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</playlist>
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<playlist id="playlist3">
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<property name="kdenlive:audio_track">1</property>
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</playlist>
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<tractor id="tractor1" in="00:00:00.000">
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<property name="kdenlive:audio_track">1</property>
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<track hide="video" producer="playlist2"/>
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<track hide="video" producer="playlist3"/>
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</tractor>
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<playlist id="playlist4"/>
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<playlist id="playlist5"/>
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<tractor id="tractor2" in="00:00:00.000">
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<track hide="audio" producer="playlist4"/>
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<track hide="audio" producer="playlist5"/>
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</tractor>
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<playlist id="playlist6"/>
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<playlist id="playlist7"/>
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<tractor id="tractor3" in="00:00:00.000">
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<track hide="audio" producer="playlist6"/>
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<track hide="audio" producer="playlist7"/>
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</tractor>
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<tractor id="tractor4" in="00:00:00.000" out="00:08:20.000">
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<track producer="black_track"/>
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<track producer="tractor0"/>
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<track producer="tractor1"/>
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<track producer="tractor2"/>
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<track producer="tractor3"/>
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</tractor>
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</mlt>
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`;
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}
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}
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const project = new Project(30);
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project.addProducer("/home/kuba/Videos/5min.mp4");
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project.addProducer("/home/kuba/Videos/5min.wav");
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await $`echo ${await project.toXML()} > project-generated.kdenlive`;
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28
producer.mjs
28
producer.mjs
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import {
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getStream,
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indexOf,
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renderAllProps,
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getStreamIndex,
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formatDuration,
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} from "./util.mjs";
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import { makeIDGen } from "./util.mjs";
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const makeId = makeIDGen(1);
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const producerIndexGen = makeIDGen(0);
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export default class Producer {
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constructor(path) {
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this.path = path;
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this.index = producerIndexGen.next().value;
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}
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async toXML(fps) {
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const xml = (
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await $`melt ${
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this.path
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} -consumer xml ${`frame_rate_num=${fps}`} | htmlq producer`
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).stdout;
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return xml.replace("producer0", `producer${this.index}`);
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}
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}
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83
util.mjs
83
util.mjs
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export function indexOf(array, predicate) {
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for (let i in array) {
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if (predicate(array[i])) {
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return i;
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}
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}
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return -1;
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}
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export async function renderProperty(
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name,
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fn,
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metadata,
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project_settings,
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prefix = ""
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) {
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let value;
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if (typeof fn === "string") {
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value = fn;
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} else {
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value = await fn(metadata, project_settings);
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}
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if (value === null) {
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return "";
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} else if (value && value.$replace) {
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return value.$replace;
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} else {
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return `<property name="${prefix}${name}">${value}</property>`;
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}
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}
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export async function renderAllProps(
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props,
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metadata,
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project_settings,
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prefix = ""
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) {
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return (
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await Promise.all(
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Object.entries(props).map(([name, fn]) =>
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renderProperty(name, fn, metadata, project_settings, prefix)
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)
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)
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).join("\n");
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}
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export function getStream(tracks, type) {
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return tracks.find((track) => track["@type"] == type);
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}
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const HOUR = 60 * 60;
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const MINUTE = 60;
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export function formatDuration(float_s) {
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const hours = Math.floor(float_s / HOUR);
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float_s = float_s - hours * HOUR;
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const minutes = Math.floor(float_s / MINUTE);
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const seconds = float_s - minutes * MINUTE;
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return `${twoDigits(hours)}:${twoDigits(minutes)}:${twoDigits(seconds, 5)}`;
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}
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export function twoDigits(number, decimal = 0) {
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let [int, dec] = number.toFixed(decimal).split(".");
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dec = dec || "";
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if (dec == "") {
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return int.padStart(2, "0");
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} else {
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return int.padStart(2, "0") + "." + dec;
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}
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}
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export function getStreamIndex(trackarray, type) {
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const array_index = indexOf(trackarray, (e) => e["@type"] == type);
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return array_index == -1 ? -1 : trackarray[array_index].StreamOrder || 0;
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}
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export function* makeIDGen(first = 1) {
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let i = first;
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while (true) {
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yield i;
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i++;
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}
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}
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