youtube

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 Go to latest Published: Oct 5, 2023 License: MIT Imports: 22 Imported by: 0

README

Download Youtube Video in Golang

GitHub license Go Reference Build Status Coverage

This package is a Youtube video download package, for more detail refer https://github.com/ytdl-org/youtube-dl for more download options.

This tool is meant to be used to download CC0 licenced content, we do not support nor recommend using it for illegal activities.

Overview

Installation

Install via go get

Please ensure you have installed Go 1.18 or later.

go get github.com/takefy-dev/youtube
From source code
git clone https://github.com/kkdai/youtube.git
cd youtube
go run ./cmd/youtubedr
Mac
brew install youtubedr
in Termux
pkg install youtubedr
You can also find this package in

Usage

Use the binary directly

It's really simple to use, just get the video id from youtube url - ex: https://www.youtube.com/watch?v=rFejpH_tAHM, the video id is rFejpH_tAHM

$ youtubedr download QAGDGja7kbs
$ youtubedr download https://www.youtube.com/watch?v=rFejpH_tAHM
Use this package in your golang program

Please check out the example_test.go for example code.

Example:

  • Get information of dotGo-2015-rob-pike video for downloading

    go get github.com/takefy-dev/youtube/youtubedr

    Download video from dotGo 2015 - Rob Pike - Simplicity is Complicated

    youtubedr info https://www.youtube.com/watch?v=rFejpH_tAHM

Title: dotGo 2015 - Rob Pike - Simplicity is Complicated
Author: dotconferences
-----available streams-----
itag:  18 , quality: medium , type: video/mp4; codecs="avc1.42001E, mp4a.40.2"
itag:  22 , quality:  hd720 , type: video/mp4; codecs="avc1.64001F, mp4a.40.2"
itag: 137 , quality: hd1080 , type: video/mp4; codecs="avc1.640028"
itag: 248 , quality: hd1080 , type: video/webm; codecs="vp9"
........
  • Download dotGo-2015-rob-pike-video

    go get github.com/takefy-dev/youtube/youtubedr

    Download video from dotGo 2015 - Rob Pike - Simplicity is Complicated

    youtubedr download https://www.youtube.com/watch?v=rFejpH_tAHM
  • Download video to specific folder and name

    go get github.com/takefy-dev/youtube/youtubedr

    Download video from dotGo 2015 - Rob Pike - Simplicity is Complicated to current directory and name the file to simplicity-is-complicated.mp4

    youtubedr download -d ./ -o simplicity-is-complicated.mp4 https://www.youtube.com/watch?v=rFejpH_tAHM
  • Download video with specific quality

    go get github.com/takefy-dev/youtube/youtubedr

    Download video from dotGo 2015 - Rob Pike - Simplicity is Complicated with specific quality

    youtubedr download -q medium https://www.youtube.com/watch?v=rFejpH_tAHM
    Special case by quality hd1080:

    Installation of ffmpeg is necessary for hd1080

    ffmpeg   //check ffmpeg is installed, if not please download ffmpeg and set to your PATH.
youtubedr download -q hd1080 https://www.youtube.com/watch?v=rFejpH_tAHM
  • Download video with specific itag

    go get github.com/takefy-dev/youtube/youtubedr

    Download video from dotGo 2015 - Rob Pike - Simplicity is Complicated

    youtubedr download -q 18 https://www.youtube.com/watch?v=rFejpH_tAHM

How it works

  • Parse the video ID you input in URL
    • ex: https://www.youtube.com/watch?v=rFejpH_tAHM, the video id is rFejpH_tAHM
  • Get video information via video id.
    • Use URL: http://youtube.com/get_video_info?video_id=
  • Parse and decode video information.
    • Download URL in "url="
    • title in "title="
  • Download video from URL
    • Need the string combination of "url"

Inspired

Project52

It is one of my project 52.

License

This package is licensed under MIT license. See LICENSE for details.

Documentation

Overview

Package youtube implement youtube download package in go.

Index

Examples

Constants

View Source 
const (
	Size1Kb  = 1024
	Size1Mb  = Size1Kb * 1024
	Size10Mb = Size1Mb * 10
)
View Source 
const (
	ErrCipherNotFound             = constError("cipher not found")
	ErrSignatureTimestampNotFound = constError("signature timestamp not found")
	ErrInvalidCharactersInVideoID = constError("invalid characters in video id")
	ErrVideoIDMinLength           = constError("the video id must be at least 10 characters long")
	ErrReadOnClosedResBody        = constError("http: read on closed response body")
	ErrNotPlayableInEmbed         = constError("embedding of this video has been disabled")
	ErrLoginRequired              = constError("login required to confirm your age")
	ErrVideoPrivate               = constError("user restricted access to this video")
	ErrInvalidPlaylist            = constError("no playlist detected or invalid playlist ID")
)

Variables

View Source 
var (
	// WebClient, better to use Android client but go ahead.
	WebClient = clientInfo{
				// contains filtered or unexported fields
	}

	// AndroidClient, download go brrrrrr.
	AndroidClient = clientInfo{
					// contains filtered or unexported fields
	}

	// EmbeddedClient, not really tested.
	EmbeddedClient = clientInfo{
					// contains filtered or unexported fields
	}
)
View Source 
var DefaultClient = AndroidClient

DefaultClient type to use. No reason to change but you could if you wanted to.

View Source 
var (
	ErrNoFormat = errors.New("no video format provided")
)
View Source 
var (
	ErrTranscriptDisabled = errors.New("transcript is disabled on this video")
)

Functions

func ExtractVideoID 

func ExtractVideoID(videoID string) (string, error)

ExtractVideoID extracts the videoID from the given string

Types

type CaptionTrack 

type CaptionTrack struct {
	BaseURL string `json:"baseUrl"`
	Name    struct {
		SimpleText string `json:"simpleText"`
	} `json:"name"`
	VssID          string `json:"vssId"`
	LanguageCode   string `json:"languageCode"`
	Kind           string `json:"kind,omitempty"`
	IsTranslatable bool   `json:"isTranslatable"`
}

type Client 

type Client struct {
	// Debug enables debugging output through log package
	Debug bool

	// HTTPClient can be used to set a custom HTTP client.
	// If not set, http.DefaultClient will be used
	HTTPClient *http.Client

	// MaxRoutines to use when downloading a video.
	MaxRoutines int

	// ChunkSize to use when downloading videos in chunks. Default is Size10Mb.
	ChunkSize int64
	// contains filtered or unexported fields
}

Client offers methods to download video metadata and video streams.

Example

ExampleDownload : Example code for how to use this package for download video. 

package main

import (
	"io"
	"os"

	"github.com/takefy-dev/youtube"
)

func main() {
	videoID := "BaW_jenozKc"
	client := youtube.Client{}

	video, err := client.GetVideo(videoID)
	if err != nil {
		panic(err)
	}

	formats := video.Formats.WithAudioChannels() // only get videos with audio
	stream, _, err := client.GetStream(video, &formats[0])
	if err != nil {
		panic(err)
	}

	file, err := os.Create("video.mp4")
	if err != nil {
		panic(err)
	}
	defer file.Close()

	_, err = io.Copy(file, stream)
	if err != nil {
		panic(err)
	}
}

Output:

func (*Client) GetPlaylist 

func (c *Client) GetPlaylist(url string) (*Playlist, error)

GetPlaylist fetches playlist metadata

func (*Client) GetPlaylistContext 

func (c *Client) GetPlaylistContext(ctx context.Context, url string) (*Playlist, error)

GetPlaylistContext fetches playlist metadata, with a context, along with a list of Videos, and some basic information for these videos. Playlist entries cannot be downloaded, as they lack all the required metadata, but can be used to enumerate all IDs, Authors, Titles, etc.

func (*Client) GetStream 

func (c *Client) GetStream(video *Video, format *Format) (io.ReadCloser, int64, error)

GetStream returns the stream and the total size for a specific format

Example 
client := Client{Debug: true}

video, err := client.GetVideo("https://www.youtube.com/watch?v=9_MbW9FK1fA")
if err != nil {
	panic(err)
}

// Typically youtube only provides separate streams for video and audio.
// If you want audio and video combined, take a look a the downloader package.
format := video.Formats.FindByQuality("medium")
reader, _, err := client.GetStream(video, format)
if err != nil {
	panic(err)
}

// do something with the reader

reader.Close()

Output:

func (*Client) GetStreamContext 

func (c *Client) GetStreamContext(ctx context.Context, video *Video, format *Format) (io.ReadCloser, int64, error)

GetStreamContext returns the stream and the total size for a specific format with a context.

func (*Client) GetStreamURL 

func (c *Client) GetStreamURL(video *Video, format *Format) (string, error)

GetStreamURL returns the url for a specific format

func (*Client) GetStreamURLContext 

func (c *Client) GetStreamURLContext(ctx context.Context, video *Video, format *Format) (string, error)

GetStreamURLContext returns the url for a specific format with a context

func (*Client) GetTranscript 

func (c *Client) GetTranscript(video *Video) (VideoTranscript, error)

GetTranscript fetches the video transcript if available.

Not all videos have transcripts, only relatively new videos. If transcripts are disabled or not available, ErrTranscriptDisabled is returned.

func (*Client) GetTranscriptCtx 

func (c *Client) GetTranscriptCtx(ctx context.Context, video *Video) (VideoTranscript, error)

GetTranscriptCtx fetches the video transcript if available.

Not all videos have transcripts, only relatively new videos. If transcripts are disabled or not available, ErrTranscriptDisabled is returned.

func (*Client) GetVideo 

func (c *Client) GetVideo(url string) (*Video, error)

GetVideo fetches video metadata

func (*Client) GetVideoContext 

func (c *Client) GetVideoContext(ctx context.Context, url string) (*Video, error)

GetVideoContext fetches video metadata with a context

func (*Client) VideoFromPlaylistEntry 

func (c *Client) VideoFromPlaylistEntry(entry *PlaylistEntry) (*Video, error)

func (*Client) VideoFromPlaylistEntryContext 

func (c *Client) VideoFromPlaylistEntryContext(ctx context.Context, entry *PlaylistEntry) (*Video, error)

type DecipherOperation 

type DecipherOperation func([]byte) []byte

type ErrPlayabiltyStatus 

type ErrPlayabiltyStatus struct {
	Status string
	Reason string
}

func (ErrPlayabiltyStatus) Error 

func (err ErrPlayabiltyStatus) Error() string

type ErrPlaylistStatus 

type ErrPlaylistStatus struct {
	Reason string
}

func (ErrPlaylistStatus) Error 

func (err ErrPlaylistStatus) Error() string

type ErrUnexpectedStatusCode 

type ErrUnexpectedStatusCode int

ErrUnexpectedStatusCode is returned on unexpected HTTP status codes

func (ErrUnexpectedStatusCode) Error 

func (err ErrUnexpectedStatusCode) Error() string

type Format 

type Format struct {
	ItagNo           int    `json:"itag"`
	URL              string `json:"url"`
	MimeType         string `json:"mimeType"`
	Quality          string `json:"quality"`
	Cipher           string `json:"signatureCipher"`
	Bitrate          int    `json:"bitrate"`
	FPS              int    `json:"fps"`
	Width            int    `json:"width"`
	Height           int    `json:"height"`
	LastModified     string `json:"lastModified"`
	ContentLength    int64  `json:"contentLength,string"`
	QualityLabel     string `json:"qualityLabel"`
	ProjectionType   string `json:"projectionType"`
	AverageBitrate   int    `json:"averageBitrate"`
	AudioQuality     string `json:"audioQuality"`
	ApproxDurationMs string `json:"approxDurationMs"`
	AudioSampleRate  string `json:"audioSampleRate"`
	AudioChannels    int    `json:"audioChannels"`

	AudioTrack *struct {
		DisplayName    string  `json:"displayName"`
		Id             *string `json:"id"`
		AudioIsDefault bool    `json:"audioIsDefault"`
	}
	// InitRange is only available for adaptive formats
	InitRange *struct {
		Start string `json:"start"`
		End   string `json:"end"`
	} `json:"initRange"`

	// IndexRange is only available for adaptive formats
	IndexRange *struct {
		Start string `json:"start"`
		End   string `json:"end"`
	} `json:"indexRange"`
}

type FormatList 

type FormatList []Format

func (FormatList) AudioChannels 

func (list FormatList) AudioChannels(n int) (result FormatList)

AudioChannels returns a new FormatList filtered by the matching AudioChannels

func (FormatList) FindByItag 

func (list FormatList) FindByItag(itagNo int) *Format

FindByItag returns the first format matching the itag number

func (FormatList) FindByQuality 

func (list FormatList) FindByQuality(quality string) *Format

FindByQuality returns the first format matching Quality or QualityLabel

Examples: tiny, small, medium, large, 720p, hd720, hd1080

func (FormatList) Quality 

func (list FormatList) Quality(quality string) (result FormatList)

Quality returns a new FormatList filtered by quality, quality label or itag, but not audio quality

func (FormatList) Sort 

func (list FormatList) Sort()

Sort sorts all formats fields

func (FormatList) Type 

func (list FormatList) Type(t string) (result FormatList)

Type returns a new FormatList filtered by mime type of video

func (FormatList) WithAudioChannels 

func (list FormatList) WithAudioChannels() (result FormatList)

AudioChannels returns a new FormatList filtered by the matching AudioChannels

type Playlist 

type Playlist struct {
	ID          string
	Title       string
	Description string
	Author      string
	Videos      []*PlaylistEntry
}
Example

Example usage for playlists: downloading and checking information. 

package main

import (
	"fmt"
	"io"
	"os"
	"strings"

	"github.com/takefy-dev/youtube"
)

func main() {
	playlistID := "PLQZgI7en5XEgM0L1_ZcKmEzxW1sCOVZwP"
	client := youtube.Client{}

	playlist, err := client.GetPlaylist(playlistID)
	if err != nil {
		panic(err)
	}

	/* ----- Enumerating playlist videos ----- */
	header := fmt.Sprintf("Playlist %s by %s", playlist.Title, playlist.Author)
	println(header)
	println(strings.Repeat("=", len(header)) + "\n")

	for k, v := range playlist.Videos {
		fmt.Printf("(%d) %s - '%s'\n", k+1, v.Author, v.Title)
	}

	/* ----- Downloading the 1st video ----- */
	entry := playlist.Videos[0]
	video, err := client.VideoFromPlaylistEntry(entry)
	if err != nil {
		panic(err)
	}
	// Now it's fully loaded.

	fmt.Printf("Downloading %s by '%s'!\n", video.Title, video.Author)

	stream, _, err := client.GetStream(video, &video.Formats[0])
	if err != nil {
		panic(err)
	}

	file, err := os.Create("video.mp4")

	if err != nil {
		panic(err)
	}

	defer file.Close()
	_, err = io.Copy(file, stream)

	if err != nil {
		panic(err)
	}

	println("Downloaded /video.mp4")
}

Output:

type PlaylistEntry 

type PlaylistEntry struct {
	ID         string
	Title      string
	Author     string
	Duration   time.Duration
	Thumbnails Thumbnails
}

type Thumbnail 

type Thumbnail struct {
	URL    string
	Width  uint
	Height uint
}

type Thumbnails 

type Thumbnails []Thumbnail

type TranscriptSegment 

type TranscriptSegment struct {
	// Text is the transcipt text.
	Text string `json:"text"`

	// StartMs is the start timestamp in ms.
	StartMs int `json:"offset"`

	// OffsetText e.g. '4:00'.
	OffsetText string `json:"offsetText"`

	// Duration the transcript segment spans in ms.
	Duration int `json:"duration"`
}

TranscriptSegment is a single transcipt segment spanning a few milliseconds.

func (TranscriptSegment) String 

func (tr TranscriptSegment) String() string

type Video 

type Video struct {
	ID                  string
	Title               string
	Description         string
	Author              string
	ChannelID           string
	Views               int
	Duration            time.Duration
	PublishDate         time.Time
	Formats             FormatList
	Thumbnails          Thumbnails
	DASHManifestURL     string // URI of the DASH manifest file
	HLSManifestURL      string // URI of the HLS manifest file
	DefaultAudioTrackId *string
	CaptionTracks       []CaptionTrack
}

func (*Video) FilterQuality 

func (v *Video) FilterQuality(quality string)

FilterQuality reduces the format list to formats matching the quality

func (*Video) SortBitrateAsc 

func (v *Video) SortBitrateAsc(i int, j int) bool

func (*Video) SortBitrateDesc 

func (v *Video) SortBitrateDesc(i int, j int) bool

type VideoTranscript 

type VideoTranscript []TranscriptSegment

func (VideoTranscript) String 

func (vt VideoTranscript) String() string

Source Files

View all Source files

Directories

Path Synopsis
cmd
youtubedr

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