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feat: improve support for dubbed content (#293)

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* feat(Format): add `language`, `is_dubbed` and `is_original`

* feat: add a format filtering option to the DASH function
> And a simple language option to VideoInfo's download method.

* chore: update docs

* feat: improve audio track info parsing

* feat(Format): parse `audioTrack` prop
This commit is contained in:
LuanRT
2023-01-27 00:42:20 -03:00
committed by GitHub
parent 0fc29f0bbf
commit d6c5a9b971
9 changed files with 90 additions and 21 deletions
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44
src/utils/FormatUtils.ts
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@@ -14,6 +14,7 @@ import { Constants } from '.';
import { getStringBetweenStrings, InnertubeError, streamToIterable } from './Utils';
export type URLTransformer = (url: URL) => URL;
export type FormatFilter = (format: Format) => boolean;
export interface FormatOptions {
/**
@@ -24,6 +25,10 @@ export interface FormatOptions {
* Download type, can be: video, audio or video+audio
*/
type?: 'video' | 'audio' | 'video+audio';
/**
* Language code, defaults to 'original'.
*/
language?: string;
/**
* File format, use 'any' to download any format
*/
@@ -187,7 +192,8 @@ class FormatUtils {
const requires_audio = options.type ? options.type.includes('audio') : true;
const requires_video = options.type ? options.type.includes('video') : true;
const quality = options.quality || '360p';
const language = options.language || 'original';
const quality = options.quality || 'best';
let best_width = -1;
@@ -208,17 +214,20 @@ class FormatUtils {
return true;
});
if (!candidates.length) {
throw new InnertubeError('No matching formats found', {
options
});
}
if (!candidates.length)
throw new InnertubeError('No matching formats found', { options });
if (is_best && requires_video)
candidates = candidates.filter((format) => format.width === best_width);
if (requires_audio && !requires_video) {
const audio_only = candidates.filter((format) => !format.has_video);
const audio_only = candidates.filter((format) => {
if (language !== 'original') {
return !format.has_video && format.language === language;
}
return !format.has_video && format.is_original;
});
if (audio_only.length > 0) {
candidates = audio_only;
}
@@ -241,11 +250,28 @@ class FormatUtils {
adaptive_formats: Format[];
dash_manifest_url: string | null;
hls_manifest_url: string | null;
}, url_transformer: URLTransformer = (url) => url, cpn?: string, player?: Player): string {
}, url_transformer: URLTransformer = (url) => url, format_filter?: FormatFilter, cpn?: string, player?: Player): string {
if (!streaming_data)
throw new InnertubeError('Streaming data not available');
const { adaptive_formats } = streaming_data;
let filtered_streaming_data;
if (format_filter) {
filtered_streaming_data = {
formats: streaming_data.formats.filter((fmt: Format) => !(format_filter(fmt))),
adaptive_formats: streaming_data.adaptive_formats.filter((fmt: Format) => !(format_filter(fmt))),
expires: streaming_data.expires,
dash_manifest_url: streaming_data.dash_manifest_url,
hls_manifest_url: streaming_data.hls_manifest_url
};
} else {
filtered_streaming_data = streaming_data;
}
const { adaptive_formats } = filtered_streaming_data;
if (!adaptive_formats.length)
throw new InnertubeError('No adaptive formats found');
const length = adaptive_formats[0].approx_duration_ms / 1000;