环球观焦点：B站视频播放源地址获取及B站视频下载

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。

如果你对这方面有兴趣，可以和我们群交流学习，共同进步

(资料图)

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。

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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": 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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": 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"//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。

ucsheep@ucsheep-B250M-D2V:~$ you-get -u https://www.bilibili.com/video/av53788919?from=search&seid=18263359557066961621[1] 6330ucsheep@ucsheep-B250M-D2V:~$ site:                Bilibilititle:               初夏鞋子合集 | Shoes Collection | Meng Maostream:    - 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/3.5Real 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=0http://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