feat(node-syncsub): extract subs from video if not present
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This commit is contained in:
matt1432 2024-03-31 22:06:17 -04:00
parent 57816ab604
commit 1d1856351b
2 changed files with 66 additions and 31 deletions

View file

@ -44,7 +44,7 @@ export const ISO6391To3 = new Map([
['fa', 'fas'],
['fj', 'fij'],
['fi', 'fin'],
['fr', 'fra'],
['fr', 'fre'],
['fy', 'fry'],
['ff', 'ful'],
['gd', 'gla'],
@ -231,7 +231,6 @@ export const ISO6393To1 = new Map([
['fas', 'fa'],
['fij', 'fj'],
['fin', 'fi'],
['fra', 'fr'],
['fre', 'fr'],
['fry', 'fy'],
['ful', 'ff'],

View file

@ -5,10 +5,14 @@ import {
} from 'fs/promises';
import { ffprobe as ffProbe } from 'fluent-ffmpeg';
import { spawn } from 'child_process';
import { spawnSync as spawn } from 'child_process';
import { ISO6391To3, ISO6393To1 } from './lang-codes';
const SPAWN_OPTS = {
shell: true,
stdio: [process.stdin, process.stdout, process.stderr],
};
/**
* These are the cli arguments
@ -38,19 +42,7 @@ function getVideoPath(files: string[]) {
!f.endsWith('.srt'))[0]}`;
}
function runSubSync(cmd: string[]) {
spawn('subsync', cmd, {
shell: true,
stdio: [process.stdin, process.stdout, process.stderr],
});
}
async function main() {
const files = await readDir(DIR);
const VIDEO = getVideoPath(files);
const BASE_NAME = VIDEO.split('/').at(-1)?.replace(/\.[^.]*$/, '');
async function backupSubs(files: string[]) {
// Check if backup folder already exists and create it if not
if (!files.some((f) => f.endsWith('.srt.bak'))) {
await mkdir(`${DIR}/.srt.bak`);
@ -61,13 +53,42 @@ async function main() {
// Remove synced subtitles from the list to sync
// langs - backups
langs = langs.filter((n) => !backups
.some((s) => n === ISO6391To3.get(s.split('.').at(-2) ?? '')));
.some((s) => {
const l2 = s.split('.').at(-2) ?? '';
const l3 = ISO6391To3.get(l2);
return n === l3;
}));
}
if (langs.length === 0) {
console.warn('Subtitles have already been synced');
process.exit(0);
}
}
function runSubSync(
cmd: string[],
onError = (error?: string) => {
console.error(error);
},
) {
const { error } = spawn('subsync', cmd, SPAWN_OPTS);
if (error) {
onError(error.message);
}
spawn('chmod', ['-R', '775', `'${DIR}'`], SPAWN_OPTS);
}
async function main() {
const files = await readDir(DIR);
const VIDEO = getVideoPath(files);
const BASE_NAME = VIDEO.split('/').at(-1)?.replace(/\.[^.]*$/, '');
backupSubs(files);
// ffprobe the video file to see available audio tracks
ffProbe(VIDEO, (_e, data) => {
@ -97,36 +118,51 @@ async function main() {
if (files.includes(FILE_NAME)) {
await mv(OUT_FILE, IN_FILE);
runSubSync(cmd);
runSubSync(cmd, async() => {
await mv(IN_FILE, OUT_FILE);
});
}
else {
let stream = data.streams.find((s) => {
return s['tags']['language'] === lang &&
s.disposition!.forced === 0 &&
s.disposition?.forced === 0 &&
s.codec_type === 'subtitle';
})!.index;
})?.index ?? -1;
if (!stream) {
if (stream === -1) {
stream = data.streams.find((s) => {
return s['tags']['language'] === lang &&
s.codec_type === 'subtitle';
})!.index;
})?.index ?? -1;
}
if (!stream) {
if (stream === -1) {
console.warn(`No subtitle tracks were found for ${lang}`);
process.exit(0);
return;
}
// Extract subtitles
spawn('ffmpeg', [
'-i', `'${VIDEO}'`,
'-map', `0:${stream}`, `'${IN_FILE}'`,
], {
shell: true,
stdio: [process.stdin, process.stdout, process.stderr],
'-map', `"0:${stream}"`, `'${IN_FILE}'`,
], SPAWN_OPTS);
}).on('close', () => {
runSubSync(cmd);
// Delete subtitles from video
spawn('mv', [`'${VIDEO}'`, `'${VIDEO}.bak'`], SPAWN_OPTS);
spawn('ffmpeg', [
'-i', `'${VIDEO}.bak'`,
'-map', '0',
'-map', `-0:${stream}`,
'-c', 'copy', `'${VIDEO}'`,
], SPAWN_OPTS);
spawn('rm', [`'${VIDEO}.bak'`], SPAWN_OPTS);
runSubSync(cmd, async() => {
await mv(IN_FILE, OUT_FILE);
});
}
});