README
¶
YouTube
Download from YouTube
https://pkg.go.dev/github.com/89z/youtube
Free proxy list
https://proxy.webshare.io/register
Process
Start with a typical video:
https://www.youtube.com/watch?v=XeojXq6ySs4
Using the same ID, construct a URL like this:
https://www.youtube.com/get_video_info?eurl=https://www.youtube.com&video_id=XeojXq6ySs4
The response will be a query string, like this (edited for readability):
innertube_api_version=v1&
innertube_context_client_version=2.20210504.09.00&
player_response=%7B%22responseContext%22%3A%7B%22serviceTrackingParams%22%3A...
ps=desktop-polymer&
root_ve_type=27240&
Extract the player_response value. This will be a JSON object, like this:
{
"streamingData": {
"adaptiveFormats": [
{
"itag": 137,
"mimeType": "video/mp4; codecs=\"avc1.640020\"",
"height": 1080,
"signatureCipher": "s=VZVZOq0QJ8wRgIhANWm3sPF-2hbzQQGrErjQFMNmxTfALco..."
}
]
}
}
Then extract the signatureCipher value, this is a query string, like this:
sp=sig&
s=VZVZOq0QJ8wRgIhANWm3sPF-2hbzQQGrErjQFMNmxTfALcoZkZ4IVR1djIpAiEA8HFKix6d4B3T...&
url=https://r3---sn-q4flrnek.googlevideo.com/videoplayback%3Fexpire%3D16201927...
The url is the URL to the audio or video. However before you can access the
URL, you must add an entry to the query string. The new key, is the value under
sp above (sig in this case). The new value, is the value under s above
(VZVZOq0QJ8wRgIhANWm3sPF-2hbzQQGrErjQFMNmxTfALcoZkZ4IVR1djIpA... in this case).
However before you can add the new entry, you must decode the s value. To
decode the value, take the following steps. First, visit the original page:
https://www.youtube.com/watch?v=XeojXq6ySs4
In the source code, will be some text like this:
/s/player/3e7e4b43/player_ias.vflset/en_US/base.js
which you can turn into:
https://www.youtube.com/s/player/3e7e4b43/player_ias.vflset/en_US/base.js
In this new page, will be some code like this:
var uy={an:function(a){a.reverse()},
gN:function(a,b){a.splice(0,b)},
J4:function(a,b){var c=a[0];a[0]=a[b%a.length];a[b%a.length]=c}};
vy=function(a){a=a.split("");uy.gN(a,2);uy.J4(a,47);uy.gN(a,1);uy.an(a,49);
uy.gN(a,2);uy.J4(a,4);uy.an(a,71);uy.J4(a,15);uy.J4(a,40);return a.join("")};
Take the original s value, and run it through this function:
vy('_l_lOq0QJ8wRAIgc-yNc9Z4lSO2CozG4B-W9uC5zeuTATDvqHlnQaHGNmkCICsZJGbEjKDmD...')
Result will look about the same, but scrambled:
AOq0QJ8wRAIgc-ylc9Z4lSO2CozG4B-W9uC5zeuTNTDvqH_nQaHGNmkCICsZJGbEjKDmDSnKg_atTR...
Finally you can construct the resulting URL:
https://r3---sn-q4fl6nz7.googlevideo.com/videoplayback?vprv=1&
id=o-AHThxQXyxJ3jfw5EBUJeT0IJLrdQeYpMdCsCImMfbuac&
sig=AOq0QJ8wRAIgc-ylc9Z4lSO2CozG4B-W9uC5zeuTNTDvqH_nQaHGNmkCICsZJGbEjKDmDSnKg_...
Links
Documentation
¶
Overview ¶
YouTube
Index ¶
Constants ¶
const (
Origin = "https://www.youtube.com"
)
Variables ¶
This section is empty.
Functions ¶
This section is empty.
Types ¶
type Format ¶
type Video ¶
type Video struct {
StreamingData struct {
AdaptiveFormats []Format
}
Microformat struct {
PlayerMicroformatRenderer struct {
AvailableCountries []string
PublishDate string
}
}
VideoDetails struct {
Author string
ShortDescription string
Title string
ViewCount int `json:"viewCount,string"`
}
}
Source Files