[deno]10M bps video files concation with x4 speed and x2 volume with ffmpeg command

movconcat-fps60.js

#!/usr/bin/env -S deno run --allow-read --allow-run
// usage: deno run --allow-read --allow-run movconcat.js /Volumes/UNTITLED/Normal/F/ result.mp4
import * as path from "https://deno.land/std/path/mod.ts";
import * as flags from "https://deno.land/std/flags/mod.ts";

const parsed = flags.parse(Deno.args);
const sources = parsed._.at(-2);
const output = parsed._.at(-1);
const inputs = [];
for await (const {name} of Deno.readDir(sources)) inputs.push(name);
inputs.sort();
const list = inputs.map(f => `file ${path.toFileUrl(path.join(sources, f))}\n`).join(``);

const ffmpeg = Deno.build.os === "darwin" ? [`caffeinate`, `-imd`, `ffmpeg`] : [`ffmpeg`];
const vf = (parsed.g ? `eq=gamma=${parsed.g},` : ``) + `yadif=0:-1:1,fps=60000/1000,setpts=(PTS-STARTPTS)/4.0`;
const options = [
  `-protocol_whitelist`, `file,data,pipe,crypto`, `-safe`, `0`, `-f`, `concat`, `-i`, `pipe:0`,
  `-movflags`, `+faststart`,
  `-c:v`, `libx264`, `-profile:v`, `high`, `-b:v`, `12M`, `-bf`, `2`, `-r`, `60`, `-g`, `30`, `-coder`, `1`, `-vf`, vf,
  `-c:a`, `aac`, `-profile:a`, `aac_low`, `-b:a`, `384k`, `-ac`, `2`, `-ar`, `96000`, `-af`, `atempo=2.0,atempo=2.0,volume=2.0`,
];
const cmd = [...ffmpeg, ...options, output];
console.log(cmd.join(` `));
const proc = Deno.run({cmd, stdin: `piped`});

const tes = new TextEncoderStream();
tes.readable.pipeTo(proc.stdin.writable);
const writer = tes.writable.getWriter();
await writer.write(list);
await writer.close();
await proc.status();

movconcat.js

#!/usr/bin/env -S deno run --allow-read --allow-run
// usage: deno run --allow-read --allow-run movconcat.js /Volumes/UNTITLED/Normal/F/ result.mp4
import * as path from "https://deno.land/std/path/mod.ts";

const sources = Deno.args.at(-2);
const output = Deno.args.at(-1);
const inputs = [];
for await (const {name} of Deno.readDir(sources)) inputs.push(name);
inputs.sort();
const list = inputs.map(f => `file ${path.toFileUrl(path.join(sources, f))}\n`).join(``);

const ffmpeg = Deno.build.os === "darwin" ? [`caffeinate`, `-imd`, `ffmpeg`] : [`ffmpeg`];
const options = [
  `-protocol_whitelist`, `file,data,pipe,crypto`, `-safe`, `0`, `-f`, `concat`, `-i`, `pipe:0`,
  `-movflags`, `+faststart`,
  `-c:v`, `libx264`, `-profile:v`, `high`, `-b:v`, `10M`, `-bf`, `2`, `-r`, `30`, `-g`, `15`, `-coder`, `1`, `-vf`, `yadif=0:-1:1,setpts=PTS/4.0`,
  `-c:a`, `aac`, `-profile:a`, `aac_low`, `-b:a`, `384k`, `-ac`, `2`, `-ar`, `96000`, `-af`, `atempo=2.0,atempo=2.0,volume=2.0`,
];
const cmd = [...ffmpeg, ...options, output];
console.log(cmd.join(" "));
const proc = Deno.run({cmd, stdin: "piped"});

const tes = new TextEncoderStream();
tes.readable.pipeTo(proc.stdin.writable);
const writer = tes.writable.getWriter();
await writer.write(list);
await writer.close();
await proc.status();

deno version of concat.mjs in https://gist.github.com/bellbind/a5cc2a5bba0508eb4a02e184f2ffc707