bilibili视频爬取与水印去除
- 需求
采集特定用户下面的视频
- 分析
- 首先是获取到用户视频的列表
- 然后进行翻页
- 获取所有视频的ID
- 进行视频的下载
- 实践
通过观察发现用户的下面的视频列表来自特定的API
翻页也是修改pn=的参数即可
通过API拿到的数据的格式类似
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Panic Disorder, what is it?","review":0,"author":"Psych2go中文站","mid":203230674,"created":1526157334,"length":"16:48","video_review":145,"aid":23363843,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":169,"typeid":124,"play":13058,"pic":"//i0.hdslb.com/bfs/archive/2a562add879bda3c3e43d36a44a738911a6c847b.jpg","subtitle":"","description":"惊恐发作发生时可能十分突然，这情况拖久了变成恐慌障碍就麻烦了，记住：早发现早治疗早康复。\n关于恐慌障碍的介绍请戳这篇av23363843\n本篇小视频提供了几个应对小贴士不时之需，如果遇到身边的人出现这种情况，记住：不要(跟着)慌。","copyright":"","title":"【心理学小贴士】如何应对刚惊恐发作的小伙伴?","review":0,"author":"Psych2go中文站","mid":203230674,"created":1526156159,"length":"08:00","video_review":78,"aid":23364026,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":939,"typeid":124,"play":326098,"pic":"//i1.hdslb.com/bfs/archive/e8ce861d589a0d97cdc247652d6dff5cb9b6b523.jpg","subtitle":"","description":"说实话这篇并非是有根有据的，这七步更像是演化自Helen Fisher的\"欲望Lust, 吸引Attraction, 依恋Attachment\"的三个步骤。恩，有眼缘还是第一的。\n推荐Helen Fisher: 爱情的四种类型 av17559747 坠入爱河的10大迹象av19567531 女性坠入爱河的五大前提av19476711 更多恋爱相关内容请戳我们频道或收藏夹","copyright":"","title":"【恋爱】男性坠入爱河的7个阶段","review":0,"author":"Psych2go中文站","mid":203230674,"created":1525520533,"length":"07:46","video_review":593,"aid":23026458,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":150,"typeid":124,"play":37565,"pic":"//i0.hdslb.com/bfs/archive/b0c4c5c8f0e6e17765d383d98e6ff0415e10505c.jpg","subtitle":"","description":"作为非口头沟通的一种，肢体语言传递出了人们的一些潜意识，仅供大家补充参考^ ^\n不过讲真有了好感也不代表着人家一定会答应交往啊是吧。\n联动 吸引力的9个心理学真相 av19433158","copyright":"","title":"【心理学】10个有关吸引力的肢体语言","review":0,"author":"Psych2go中文站","mid":203230674,"created":1525483155,"length":"08:04","video_review":240,"aid":22982625,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":2762,"typeid":124,"play":201285,"pic":"//i1.hdslb.com/bfs/archive/7a4e12a86b23e9e2ac968801156a393f71ea9b36.jpg","subtitle":"","description":"精神变态很危险，最危险的是他们不断用各种方法来放松你的警惕，发现时已经为时已晚。\n\n关联推荐: 判断精神变态的10个特征av14523456 5种你已经遇到反社会者还傻傻不知情的情境av15218381 你被卷入虐待关系的10个迹象av17558220","copyright":"","title":"【心理学】精神变态盯上你的10个迹象-10 Signs A Psychopath is Targeting You","review":0,"author":"Psych2go中文站","mid":203230674,"created":1525440367,"length":"09:48","video_review":2600,"aid":22979636,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":48,"typeid":39,"play":4186,"pic":"//i2.hdslb.com/bfs/archive/6a065b8217204a73fe44812ed41ae9b5bc6e9a9f.jpg","subtitle":"","description":"*修正部分内容* https://www.youtube.com/watch?v=-M8Hl5MUr8w\u0026t=76s\n教育学家肯·罗宾逊 Ken Ribonson结合自己生活的经历及丰富的见闻跟大家来了场一如以往幽默的谈天会。教育心理系合集av16484547","copyright":"","title":"什么是热情? 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MIT研发AI腕表准确分析人类情绪？","review":0,"author":"Psych2go中文站","mid":203230674,"created":1524335979,"length":"08:41","video_review":40,"aid":22406268,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":107,"typeid":124,"play":15094,"pic":"//i2.hdslb.com/bfs/archive/5c3b9e15f2a738ecdf0eb1fcbf90b7aefda63f71.jpg","subtitle":"","description":"那么问题来了，爱情是可以如此被具体化的吗？ （doge脸）\n补充阅读 https://www.zhihu.com/question/35480487","copyright":"","title":"【心理学】教科书里的爱情三角理论","review":0,"author":"Psych2go中文站","mid":203230674,"created":1523801306,"length":"09:42","video_review":110,"aid":22144770,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":1688,"typeid":124,"play":64352,"pic":"//i1.hdslb.com/bfs/archive/ab7126ab1657f67cbb820169d5372094b1dde2c5.jpg","subtitle":"","description":"16个很绝妙的形容！！如果你被诊断有抑郁症，来评论区说说你的感受吧\n\n你抑郁的5个迹象av15606031 自我调节小贴士av18041025 欢迎戳我们收藏夹了解更多","copyright":"","title":"\"抑郁症像什么\"的16个比喻","review":0,"author":"Psych2go中文站","mid":203230674,"created":1523800098,"length":"09:46","video_review":869,"aid":22142119,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":754,"typeid":124,"play":38803,"pic":"//i1.hdslb.com/bfs/archive/57c5ffcb5838a3b3b330d7372ac0f346aa3aaf48.jpg","subtitle":"","description":"一些有关内向者的小知识！\n推荐喜欢追根究底的小伙伴们围观这个 内向的科学av18240068","copyright":"","title":"【心理学】内向是怎样的？","review":0,"author":"Psych2go中文站","mid":203230674,"created":1523789494,"length":"08:08","video_review":476,"aid":22136335,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":764,"typeid":124,"play":48828,"pic":"//i1.hdslb.com/bfs/archive/26678a3b846ffe46fd0d9af9274c50e4dfd3f204.jpg","subtitle":"","description":"这视频是个小引子，能助你了解大致的区别，请务必啃啃专业版的→ www.zhihu.com/question/29974060/answer/220755862\n关联推荐:\n反社会=不合群？av14906442 找出潜伏的反社会者av15218381 精神变态10个特征 av14523456","copyright":"","title":"【心理学】反社会者和精神变态…他们很不一样","review":0,"author":"Psych2go中文站","mid":203230674,"created":1523740101,"length":"05:38","video_review":258,"aid":22110239,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":159,"typeid":124,"play":12022,"pic":"//i0.hdslb.com/bfs/archive/1d060a9da95596352fd8da492b99daa82566b6e8.jpg","subtitle":"","description":"这也解释了我们如何让抱怨这种态度(或者行为)成为习惯的原理。\n你在生活中有遇到过抱怨成性的人吗？你是怎么看待他们的呢？他们对你又有怎样的影响呢？来评论区吐槽吧！\n\n关联 皮质醇与战逃反应 av18815927","copyright":"","title":"【心理学】抱怨...很健康？","review":0,"author":"Psych2go中文站","mid":203230674,"created":1523736897,"length":"06:28","video_review":67,"aid":22109451,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":478,"typeid":124,"play":16471,"pic":"//i1.hdslb.com/bfs/archive/532f98d2710e3ce008d0b79189b51ea5fc4c1eee.jpg","subtitle":"","description":"*修正字幕*\n与操纵狂的有效沟通，助勇士您取回自己生活主导权的几个小贴士！\n欢迎围观下面的一些关联投稿，并在评论区分享下您的经历。\n\n+认知+\n心理变态的迹象av14523456|反社会者交往的迹象av14917534\n你被卷入虐待关系的迹象(煤油灯下)av17558220\n+应对+\n怎么应对自恋狂av21464726|放手吧av17745087","copyright":"","title":"【心理学小贴士】如何应对操纵狂？","review":0,"author":"Psych2go中文站","mid":203230674,"created":1523114312,"length":"10:38","video_review":110,"aid":21806416,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":524,"typeid":124,"play":35766,"pic":"//i0.hdslb.com/bfs/archive/090aa936c989c935b724deaaa4f2b20a670e7a80.jpg","subtitle":"","description":"看到路边的流浪汉，你是怎样的感受呢？\n同情，怜悯，共情（有时也称为同理心），慈悲，还有利他主义，主要是从你有无相同的亲身感受、有没有做出行动来做区分的。\n视频说的比较紧凑，建议整理一下笔记帮助自己区分几个概念~\n联动→旁观者效应av15816049 遇到反社会者还不自知的情境av15218381/","copyright":"","title":"【心理学】你是同情、共情、怜悯，还是利他主义？","review":0,"author":"Psych2go中文站","mid":203230674,"created":1522584601,"length":"08:50","video_review":300,"aid":21517807,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0},{"comment":471,"typeid":124,"play":49727,"pic":"//i2.hdslb.com/bfs/archive/b724daa0cb7c7d10830c1fe6298729112c60f53c.jpg","subtitle":"","description":"如果躲不开，怎么妥善应对自恋狂？\n=推荐=\n[ ]自恋的分类方式及自恋型人格障碍的介绍 av15111606\n[ ]你在与自恋者交往的迹象av20118307\n[ ]自恋式教养的6个惊人后果av19981412\n自恋专栏推荐→https://www.psychologytoday.com/us/blog/understanding-narcissism","copyright":"","title":"【心理学小贴士】如果躲不开，怎么妥善应对自恋狂？","review":0,"author":"Psych2go中文站","mid":203230674,"created":1522493992,"length":"12:44","video_review":242,"aid":21464726,"bvid":"","hide_click":false,"is_pay":0,"is_union_video":0}]},"page":{"count":234,"pn":5,"ps":30}}}通过解析能拿到所有的视频的aid，，这样自己在前面拼接 https://www.bilibili.com/video/av 就是每个视频的播放详情页面了
- 下载
通过调研文章发现有很多手段都可以下载B站视频包括
- 在页面源码里面会有视频的flv的地址：失效
- 在页面里面有视频分段的流的地址，需要自己进行视频的合并：通过查看源码发现确实有地址类似
"baseUrl":"http://upos-hz-mirrorcosu.acgvideo.com/upgcxcode/46/41/122884146/122884146-1-30066.m4s?e=ig8euxZM2rNcNbdlhoNvNC8BqJIzNbfqXBvEqxTEto8BTrNvN0GvT90W5JZMkX_YN0MvXg8gNEV4NC8xNEV4N03eN0B5tZlqNxTEto8BTrNvNeZVuJ10Kj_g2UB02J0mN0B5tZlqNCNEto8BTrNvNC7MTX502C8f2jmMQJ6mqF2fka1mqx6gqj0eN0B599M=&uipk=5&nbs=1&deadline=1573797253&gen=playurl&os=cosu&oi=1033176876&trid=e63c24f5a2c943a4a41ab482937fe72cu&platform=pc&upsig=155ad27902194f2fdcdbdc6702ee31a1&uparams=e,uipk,nbs,deadline,gen,os,oi,trid,platform&mid=14574986"但是这个url直接请求会403，太麻烦了，还要自己合并视频什么的，所以借助了其他手段
- you-get
you-get 是python3的一个工具。可以直接进行视频的下载。安装使用
pip3 install you-get使用方式直接在命令后面接具体的视频页面URL即可
you-get https://www.bilibili.com/video/av71940906输出如下
F:\PycharmProjects\test\venv\Scripts>
F:\PycharmProjects\test\venv\Scripts>you-get https://www.bilibili.com/video/av71940906
site: Bilibili
title: 10个迹象反映你比大多数人内心强大
stream:
- format: dash-flv720
container: mp4
quality: 高清 720P
size: 11.7 MiB (12252332 bytes)
# download-with: you-get --format=dash-flv720 [URL]
Downloading 10个迹象反映你比大多数人内心强大.mp4 ...
100% ( 11.7/ 11.7MB) ├████████████████████████████████████████┤[2/2] 988 kB/s
Merging video parts... Merged into 10个迹象反映你比大多数人内心强大.mp4
Downloading 10个迹象反映你比大多数人内心强大.cmt.xml ...
F:\PycharmProjects\test\venv\Scripts>这样我们的视频就下载好了，是不是很强，不用自己破解流和合并视频
- 水印
下载下来的视频是有水印的，需要我们去除水印，这里我使用的是 ffmeg，命令为
ffmpeg -i 1.flv -filter_complex "delogo=x=1017:y=21:w=246:h=44" 2.flv- 1.flv 是原始视频地址
- x=是需要去除水印的范围的左上角的x的坐标
- 同理y是y的坐标
- w是宽度，h是高度
- 2.flv是去水印后的视频的地址
如果有不知道怎么获取水印坐标的同学，其实很简单，先把视频截取一张图片，例如，我们视频截取后就是
使用 画图的工具，进行截取，在左下角会有坐标的显示
这样我们就得到了左上角的坐标，然后进行框选，拿到宽和高
这个没有太具体的，只要能把水印覆盖到就行。
使用命令后的结果如下：
C:\Users\Administrator\Desktop>ffmpeg -i 1.flv -filter_complex "delogo=x=1002:y=26:w=240:h=30" 11.flv
ffmpeg version N-92806-g70c86deb8e Copyright (c) 2000-2018 the FFmpeg developers
built with gcc 8.2.1 (GCC) 20181201
configuration: --enable-gpl --enable-version3 --enable-sdl2 --enable-fontconfig --enable-gnutls --enable-iconv --enable-libass --enable-libbluray --enable-libfreetype --enable-libmp3lame --enable-libopencore-amrnb --enable-libopencore-amrwb --enable-libopenjpeg --enable-libopus --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libtheora --enable-libtwolame --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx264 --enable-libx265 --enable-libxml2 --enable-libzimg --enable-lzma --enable-zlib --enable-gmp --enable-libvidstab --enable-libvorbis --enable-libvo-amrwbenc --enable-libmysofa --enable-libspeex --enable-libxvid --enable-libaom --enable-libmfx --enable-amf --enable-ffnvcodec --enable-cuvid --enable-d3d11va --enable-nvenc --enable-nvdec --enable-dxva2 --enable-avisynth --enable-libopenmpt
libavutil 56. 25.100 / 56. 25.100
libavcodec 58. 42.104 / 58. 42.104
libavformat 58. 25.100 / 58. 25.100
libavdevice 58. 6.101 / 58. 6.101
libavfilter 7. 46.101 / 7. 46.101
libswscale 5. 4.100 / 5. 4.100
libswresample 3. 4.100 / 3. 4.100
libpostproc 55. 4.100 / 55. 4.100
Input #0, flv, from '1.flv':
Metadata:
description : Packed by Bilibili XCoder v1.0(fixed_gap:False)
metadatacreator : Yet Another Metadata Injector for FLV - Version 1.9
hasKeyframes : true
hasVideo : true
hasAudio : true
hasMetadata : true
canSeekToEnd : false
datasize : 23750333
videosize : 19199443
audiosize : 4477738
lasttimestamp : 273
lastkeyframetimestamp: 262
lastkeyframelocation: 23088237
Duration: 00:09:59.00, start: 0.083000, bitrate: 633 kb/s
Stream #0:0: Video: h264 (High), yuv420p(progressive), 1280x720 [SAR 1:1 DAR 16:9], 561 kb/s, 24 fps, 24 tbr, 1k tbn, 48 tbc
Stream #0:1: Audio: aac (LC), 44100 Hz, stereo, fltp, 127 kb/s
Stream mapping:
Stream #0:0 (h264) -> delogo (graph 0)
delogo (graph 0) -> Stream #0:0 (flv)
Stream #0:1 -> #0:1 (aac (native) -> mp3 (libmp3lame))
Press [q] to stop, [?] for help
Output #0, flv, to '11.flv':
Metadata:
description : Packed by Bilibili XCoder v1.0(fixed_gap:False)
metadatacreator : Yet Another Metadata Injector for FLV - Version 1.9
hasKeyframes : true
hasVideo : true
hasAudio : true
hasMetadata : true
canSeekToEnd : false
datasize : 23750333
videosize : 19199443
audiosize : 4477738
lasttimestamp : 273
lastkeyframetimestamp: 262
lastkeyframelocation: 23088237
encoder : Lavf58.25.100
Stream #0:0: Video: flv1 (flv) ([2][0][0][0] / 0x0002), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], q=2-31, 200 kb/s, 24 fps, 1k tbn, 24 tbc
Metadata:
encoder : Lavc58.42.104 flv
Side data:
cpb: bitrate max/min/avg: 0/0/200000 buffer size: 0 vbv_delay: -1
Stream #0:1: Audio: mp3 (libmp3lame) ([2][0][0][0] / 0x0002), 44100 Hz, stereo, fltp
Metadata:
encoder : Lavc58.42.104 libmp3lame
frame= 52 fps=0.0 q=31.0 Lsize= 392kB time=00:00:02.32 bitrate=1379.7kbits/s speed=6.34x
video:352kB audio:37kB subtitle:0kB other streams:0kB global headers:0kB muxing overhead: 0.716579%
Exiting normally, received signal 2.我们看看效果
很完美哈，打完收工