Gotube is a YouTube downloader using go language. go language is a new light-weight language developed by Google, it provides not only many powerful libraries, but also a simple multi-threading syntax.

##Installation

• Install go from https://golang.org/
• Set up go environment as in https://golang.org/doc/install
  • (For Un*x users)
    • export GOPATH=$HOME/path/to/workspace/
    • export PATH=$PATH:$GOPATH/bin
  • (For Windows users)
    • In environment variables add GOPATH=path/to/workspace/
    • Append path/to/workspace/bin to PATH
• For command-line usage
  • Type the following in command/terminal
    • go get github.com/KeluDiao/gotube
    • gotube -h
• For library usage
  • You don't need to do anything

##Command-line usage You can check the video list from a url or video id:

gotube -l -url https://www.youtube.com/watch?v=C0DPdy98e4c

Filter the video list by specifying video quality:

gotube -l -id C0DPdy98e4c -q medium

Download the video with default resolution:

gotube -d -url https://www.youtube.com/watch?v=C0DPdy98e4c

Download the video with specified resolution:

gotube -d -id C0DPdy98e4c -q medium -ext video/mp4

Specify a video repository using relative path:

gotube -d -id C0DPdy98e4c -q medium -ext video/mp4 -rep ./videos

Specify a video repository using absolute path (If you are a Windows user, I highly recommend you using absolute path, or the videos may be downloaded into your users folder):

gotube -d -id C0DPdy98e4c -q medium -ext video/mp4 -rep /Users/yourusername/Documents/videos

Try search by keywords and see what would return:

gotube -l -s "curry highlights"

Try get more results by querying top k results explicitly (If k is larger than the number of all videos return, the program would return all the videos):

gotube -l -s "curry highlights" -k 5

Download all of them:

gotube -d -s "curry highlights" -k 5 -rep /Users/yourusername/Documents/videos

#Library usage

package main

import (
  . "github.com/KeluDiao/gotube/api"
  "log"
)

func main() {
	idList := [...]string{"shLTrG_noKo", "Ojv7tKpzkyM", "GahnMbhmt7g"}
	rep := "Curry_highlights"
	for _, id := range idList {
		vl, err := GetVideoListFromId(id)
		if err != nil {
			log.Fatal(err)
		}
		err = vl.Download(rep, "", "video/mp4")
		if err != nil {
			log.Fatal(err)
		}
	}
}

This program is still under-developing. More interesting functionalities will be added into it soon!