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(新)B站视频播放源地址获取及B站视频下载

程序员文章站 2022-05-11 09:05:51
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突然之间，我们的B站视频播放失效了。之前直接使用的ibilibili，发现它的低清版本视频无法正常加载了。后来加上它的公众号，才发现，都不容易，十分感谢ibilibili站站长多年的坚持，尤其是听到他说这个站点每天受到几千人的攻击时。ibilibili站提供的高清视频下载器，下载m4s文件，最后再用ffmpeg转成mp4。
对于我们而言，视频的清晰度并不重要，我们需要播放直链，仅仅是为了播放和预览视频。下载B站视频本身并不是一个难事，所以下文我将首先介绍如何获取低清版直链，然后谈谈高清版下载如何是实现。

之前，通过下面的文章，实现了B站视频在其他站点的快速预览和播放。大大地方便了对素材的快速选择。之前的源地址获取接口失效后，急需一种新的获取方式。

1.播放源获取

通过伪装移动UA请求网页，如下

curl 'https://m.bilibili.com/video/av70663655.html?from=search' 
-H 'User-Agent: Mozilla/5.0 (iPhone; CPU iPhone OS 11_0 like Mac OS X) AppleWebKit/604.1.38 (KHTML, like Gecko) Version/11.0 Mobile/15A372 Safari/604.1'  
--compressed

得到的请求结果中，找到下面这段关键信息

window.__INITIAL_STATE__ = {
	"playingMedia": "",
	"reduxAsyncConnect": {
		"loaded": true,
		"loadState": {
			"videoTag": {
				"loading": false,
				"loaded": true,
				"error": null
			},
			"videoInfo": {
				"loading": false,
				"loaded": true,
				"error": null
			}
		},
		"videoTag": [{
			"tag_id": 389808,
			"tag_name": "音乐现场",
			"cover": "http://i0.hdslb.com/bfs/archive/e86c8d10377e534b8a1617280c8cef62ae62c30c.jpg",
			"head_cover": "http://i0.hdslb.com/bfs/archive/3a8bc72ebc670579a0b97b68b973d8e5ed495b24.jpg",
			"content": "收录音乐实况表演视频，和音乐来一次最本质的亲密接触",
			"short_content": "和音乐来一次最本质的亲密接触",
			"type": 3,
			"state": 0,
			"ctime": 1436866637,
			"count": {
				"view": 0,
				"use": 136254,
				"atten": 62981
			},
			"is_atten": 0,
			"likes": 0,
			"hates": 0,
			"attribute": 0,
			"liked": 0,
			"hated": 0
		}, {
			"tag_id": 11687,
			"tag_name": "综艺",
			"cover": "http://i0.hdslb.com/bfs/archive/e3c3689f4246c3a7c70f63ed79a786faf28a8ffe.png",
			"head_cover": "",
			"content": "",
			"short_content": "",
			"type": 3,
			"state": 0,
			"ctime": 1436866637,
			"count": {
				"view": 0,
				"use": 976243,
				"atten": 181572
			},
			"is_atten": 0,
			"likes": 0,
			"hates": 0,
			"attribute": 0,
			"liked": 0,
			"hated": 0
		}, {
			"tag_id": 58183,
			"tag_name": "真人秀",
			"cover": "",
			"head_cover": "",
			"content": "",
			"short_content": "",
			"type": 3,
			"state": 0,
			"ctime": 1436866637,
			"count": {
				"view": 0,
				"use": 144418,
				"atten": 44876
			},
			"is_atten": 0,
			"likes": 0,
			"hates": 0,
			"attribute": 0,
			"liked": 0,
			"hated": 0
		}, {
			"tag_id": 9374,
			"tag_name": "HIPHOP",
			"cover": "",
			"head_cover": "",
			"content": "",
			"short_content": "",
			"type": 3,
			"state": 0,
			"ctime": 1436866637,
			"count": {
				"view": 0,
				"use": 98376,
				"atten": 67805
			},
			"is_atten": 0,
			"likes": 0,
			"hates": 0,
			"attribute": 0,
			"liked": 0,
			"hated": 0
		}, {
			"tag_id": 11905832,
			"tag_name": "Rhythm + Flow：Rapper",
			"cover": "",
			"head_cover": "",
			"content": "",
			"short_content": "",
			"type": 1,
			"state": 0,
			"ctime": 1569454310,
			"count": {
				"view": 0,
				"use": 1,
				"atten": 1
			},
			"is_atten": 0,
			"likes": 0,
			"hates": 0,
			"attribute": 0,
			"liked": 0,
			"hated": 0
		}, {
			"tag_id": 21297,
			"tag_name": "嘻哈",
			"cover": "",
			"head_cover": "",
			"content": "",
			"short_content": "",
			"type": 0,
			"state": 0,
			"ctime": 1436866637,
			"count": {
				"view": 0,
				"use": 48813,
				"atten": 2951
			},
			"is_atten": 0,
			"likes": 0,
			"hates": 0,
			"attribute": 0,
			"liked": 0,
			"hated": 0
		}, {
			"tag_id": 82755,
			"tag_name": "饶舌",
			"cover": "",
			"head_cover": "",
			"content": "",
			"short_content": "",
			"type": 0,
			"state": 0,
			"ctime": 1436866637,
			"count": {
				"view": 0,
				"use": 5844,
				"atten": 406
			},
			"is_atten": 0,
			"likes": 0,
			"hates": 0,
			"attribute": 0,
			"liked": 0,
			"hated": 0
		}, {
			"tag_id": 401568,
			"tag_name": "NETFLIX",
			"cover": "",
			"head_cover": "",
			"content": "",
			"short_content": "",
			"type": 0,
			"state": 0,
			"ctime": 1436866637,
			"count": {
				"view": 0,
				"use": 2656,
				"atten": 591
			},
			"is_atten": 0,
			"likes": 0,
			"hates": 0,
			"attribute": 0,
			"liked": 0,
			"hated": 0
		}, {
			"tag_id": 6782056,
			"tag_name": "嘻哈王",
			"cover": "",
			"head_cover": "",
			"content": "",
			"short_content": "",
			"type": 0,
			"state": 0,
			"ctime": 1522744265,
			"count": {
				"view": 0,
				"use": 625,
				"atten": 1
			},
			"is_atten": 0,
			"likes": 0,
			"hates": 0,
			"attribute": 0,
			"liked": 0,
			"hated": 0
		}],
		"videoInfo": {
			"bvid": "BV1bE411f72E",
			"aid": 70663655,
			"videos": 4,
			"tid": 71,
			"tname": "综艺",
			"copyright": 2,
			"pic": "http://i0.hdslb.com/bfs/archive/7675affb657fc8f2e6beb84a533d86512a8c4202.jpg",
			"title": "【美国有嘻哈】《嘻哈星节奏|Rhythm + Flow》|英语中字|卡迪·B / T.I. / 钱斯勒|NETFLIX|持续更新",
			"pubdate": 1570612692,
			"ctime": 1570612692,
			"desc": "Netflix\n国际巨星卡迪·B、饶舌钱斯勒、TI蒂普·哈里斯齐聚一堂，在Netflix 的首部音乐竞赛节目《嘻哈星节奏》中物色下一代亮眼嘻哈新秀。本节目邀来业界传奇人物共襄盛举，穿越数座城市，到洛杉矶、纽约、亚特兰大和芝加哥等嘻哈重镇挖掘才华洋溢的新人，并帮助这些未成名的艺术家崭露头角。",
			"state": 0,
			"attribute": 2113859,
			"duration": "03:37:32",
			"rights": {
				"bp": 0,
				"elec": 0,
				"download": 1,
				"movie": 0,
				"pay": 0,
				"hd5": 1,
				"no_reprint": 0,
				"autoplay": 1,
				"ugc_pay": 0,
				"is_cooperation": 0,
				"ugc_pay_preview": 0
			},
			"owner": {
				"mid": 314790542,
				"name": "Coun4",
				"face": "http://i1.hdslb.com/bfs/face/912697005111fde1a42ef83f390da30fc17a69a6.jpg"
			},
			"stat": {
				"aid": 70663655,
				"view": 86398,
				"danmaku": 5017,
				"reply": 253,
				"favorite": 3552,
				"coin": 957,
				"share": 2245,
				"now_rank": 0,
				"his_rank": 0,
				"like": 1917,
				"dislike": 0,
				"evaluation": ""
			},
			"dynamic": "#嘻哈星节奏##嘻哈王##Rhythm + Flow：Rapper#\n热爱音乐，平凡的你一样可以拥有不平凡的人生。\n给你展示自我的舞台，废话不多说，It's Showtime!\nRespect, peace & love.",
			"cid": 122426590,
			"dimension": {
				"width": 1920,
				"height": 1080,
				"rotate": 0
			},
			"no_cache": false,
			"pages": [{
				"cid": 122426590,
				"page": 1,
				"from": "vupload",
				"part": "EP01. 洛杉矶选秀",
				"duration": 3465,
				"vid": "",
				"weblink": "",
				"dimension": {
					"width": 1920,
					"height": 1080,
					"rotate": 0
				}
			}, {
				"cid": 122427982,
				"page": 2,
				"from": "vupload",
				"part": "EP02. 纽约选秀",
				"duration": 3133,
				"vid": "",
				"weblink": "",
				"dimension": {
					"width": 1920,
					"height": 1080,
					"rotate": 0
				}
			}, {
				"cid": 122429123,
				"page": 3,
				"from": "vupload",
				"part": "EP03. 亚特兰大选秀",
				"duration": 3181,
				"vid": "",
				"weblink": "",
				"dimension": {
					"width": 1920,
					"height": 1080,
					"rotate": 0
				}
			}, {
				"cid": 122430489,
				"page": 4,
				"from": "vupload",
				"part": "EP04. 芝加哥选秀",
				"duration": 3273,
				"vid": "",
				"weblink": "",
				"dimension": {
					"width": 1920,
					"height": 1080,
					"rotate": 0
				}
			}],
			"subtitle": {
				"allow_submit": false,
				"list": [{
					"id": 16997718492708868,
					"lan": "zh-Hant",
					"lan_doc": "中文（繁体）",
					"is_lock": false,
					"subtitle_url": "http://i0.hdslb.com/bfs/subtitle/9395320795b484c45173b13ff2736355ad112dc7.json",
					"author": {
						"mid": 0,
						"name": "",
						"sex": "",
						"face": "",
						"sign": "",
						"rank": 0,
						"birthday": 0
					}
				}, {
					"id": 16997839878488068,
					"lan": "en-US",
					"lan_doc": "英语（美国）",
					"is_lock": false,
					"subtitle_url": "http://i0.hdslb.com/bfs/subtitle/1ba653423487d65de099e55bd452ceace3a25919.json",
					"author": {
						"mid": 0,
						"name": "",
						"sex": "",
						"face": "",
						"sign": "",
						"rank": 0,
						"birthday": 0
					}
				}, {
					"id": 16998625400324098,
					"lan": "zh-Hans",
					"lan_doc": "中文（简体）",
					"is_lock": false,
					"subtitle_url": "http://i0.hdslb.com/bfs/subtitle/d99b718d326043dc16772b8f7e534ec68fc70880.json",
					"author": {
						"mid": 0,
						"name": "",
						"sex": "",
						"face": "",
						"sign": "",
						"rank": 0,
						"birthday": 0
					}
				}]
			},
			"originTitle": "【美国有嘻哈】《嘻哈星节奏|Rhythm + Flow》|英语中字|卡迪·B / T.I. / 钱斯勒|NETFLIX|持续更新",
			"reid": 5,
			"toptype": "娱乐",
			"initUrl": "//upos-hz-mirrorks3u.acgvideo.com/upgcxcode/90/65/122426590/122426590-1-6.mp4?e=ig8euxZM2rNcNbuVhwdVtWuVhwdVNEVEuCIv29hEn0l5QK==&uipk=5&nbs=1&deadline=1570938144&gen=playurl&os=ks3u&oi=3742040479&trid=06d1dfd471d34b8eb40c4cee6c79531ah&platform=html5&upsig=904b08c9cd9418a8acfd4384c8b05a30&uparams=e,uipk,nbs,deadline,gen,os,oi,trid,platform&mid=0",
			"status": "normal",
			"initCid": 122426590,
			"initDuration": 3465,
			"initPage": 1
		}
	},
	"authInfo": "",
	"listInfo": "",
	"audioReducer": null,
	"audiolistReducer": null,
	"experiment": {
		"normal": "experiment",
		"newOpenApp": 1,
		"videoHlv": "1"
	},
	"abserver": {
		"errorCode": 0,
		"expire": 1570931544623,
		"hit": {
			"hitGroup": "768_683_822"
		},
		"vars": [{
			"force": 0,
			"group": 768,
			"name": "playblock_dialog",
			"value": 1
		}, {
			"force": 0,
			"group": 683,
			"name": "H5_download_ex",
			"value": 0
		}, {
			"force": 0,
			"group": 822,
			"name": "copylink_abtest",
			"value": 1
		}]
	},
	"videoReducer": null,
	"videoTag": "",
	"rankingInfo": 0,
	"keywordInfo": "",
	"pageTitle": "",
	"partitionList": "",
	"tagInfo": "",
	"tagVideos": "",
	"tagSimilar": "",
	"userStatus": "",
	"status": "",
	"forbidden": false,
	"videoState": "init",
	"gameMode": ""
};

这其中的

"initUrl": "//upos-hz-mirrorks3u.acgvideo.com/upgcxcode/90/65/122426590/122426590-1-6.mp4?e=ig8euxZM2rNcNbuVhwdVtWuVhwdVNEVEuCIv29hEn0l5QK==&uipk=5&nbs=1&deadline=1570938144&gen=playurl&os=ks3u&oi=3742040479&trid=06d1dfd471d34b8eb40c4cee6c79531ah&platform=html5&upsig=904b08c9cd9418a8acfd4384c8b05a30&uparams=e,uipk,nbs,deadline,gen,os,oi,trid,platform&mid=0"

就是一个用于播放的链接，定位到一个mp4文件。在某些浏览器中该文件是没有办法播放，是由于reffer检查，如果要将该链接引入到其他站点播放，则需要设置成 no-reffer。

2.高清下载

you-get 想必很多人都熟悉了。

[email protected]:~$ you-get -u https://www.bilibili.com/video/av53788919?from=search&seid=18263359557066961621
[1] 6330
[email protected]:~$ site:                Bilibili
title:               初夏鞋子合集 | Shoes Collection | Meng Mao
stream:
    - format:        dash-flv
      container:     mp4
      quality:       高清 1080P
      size:          93.0 MiB (97562752 bytes)
    # download-with: you-get --format=dash-flv [URL]

User Agent: Python-urllib/3.5
Real URLs:
http://upos-hz-mirrorwcsu.acgvideo.com/upgcxcode/12/76/94087612/94087612-1-30077.m4s?e=ig8euxZM2rNcNbdlhoNvNC8BqJIzNbfqXBvEqxTEto8BTrNvN0GvT90W5JZMkX_YN0MvXg8gNEV4NC8xNEV4N03eN0B5tZlqNxTEto8BTrNvNeZVuJ10Kj_g2UB02J0mN0B5tZlqNCNEto8BTrNvNC7MTX502C8f2jmMQJ6mqF2fka1mqx6gqj0eN0B599M=&uipk=5&nbs=1&deadline=1570938738&gen=playurl&os=wcsu&oi=3742040479&trid=aea76d5dd80e481b991f0493f08f002eu&platform=pc&upsig=b6c4a378a7de6e8ce1148acb2c2f5879&uparams=e,uipk,nbs,deadline,gen,os,oi,trid,platform&mid=0
http://upos-hz-mirrorcosu.acgvideo.com/upgcxcode/12/76/94087612/94087612-1-30280.m4s?e=ig8euxZM2rNcNbdlhoNvNC8BqJIzNbfqXBvEqxTEto8BTrNvN0GvT90W5JZMkX_YN0MvXg8gNEV4NC8xNEV4N03eN0B5tZlqNxTEto8BTrNvNeZVuJ10Kj_g2UB02J0mN0B5tZlqNCNEto8BTrNvNC7MTX502C8f2jmMQJ6mqF2fka1mqx6gqj0eN0B599M=&uipk=5&nbs=1&deadline=1570938738&gen=playurl&os=cosu&oi=3742040479&trid=aea76d5dd80e481b991f0493f08f002eu&platform=pc&upsig=44e8b21648f11edead3b09f784030012&uparams=e,uipk,nbs,deadline,gen,os,oi,trid,platform&mid=0

[1]+  已完成               you-get -u https://www.bilibili.com/video/av53788919?from=search

Real URLs:中包含m4s文件链接

但是要下载，只需要 you-get URL 即可，如下。

you-get https://www.bilibili.com/video/av53788919?from=search&seid=18263359557066961621

这篇文章诞生，感谢网友 瘾

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