看到有大神分享了一个去水印下载的代码，源代码是PHP的。我简单读了一下，测试后其实很简单，这里简单记录一下，之后可以做一些东西。
获取视频ID
其实这一步很简单，如果是电脑上的浏览器访问的，地址栏最后就会包含这个ID。例如
https://www.douyin.com/video/7324602766213598501
最后面的一串数字就是这个视频的ID。
获取uri
通过API获取这个视频play_addr的uri地址。
https://www.iesdouyin.com/web/api/v2/aweme/iteminfo/?reflow_source=reflow_page&item_ids=7324602766213598501&a_bogus=64745b2b5bdc4e75b720a9a85b19867a
只需要替换上面链接中的item_ids=7324602766213598501这一项的数字就是视频ID。然后在返回的页面中可以看到很长一段json数据。格式化一下，更容易查看：
{
"item_list": [{
"aweme_id": "7324602766213598501",
"desc": "#江西文旅 #庐山雪景 我来给我家乡江西上分啦！欢迎大家来九江庐山看雪呀～ 超级美！",
"create_time": 1705391987,
"author": {
"short_id": "11491514",
"nickname": "饭思思",
"signature": "爱唱歌爱cos～\n来围脖找我玩呀：饭思思的微博\n合作邮箱：sisi2442@163.com\n唯一小号@万年婴儿肥",
"avatar_thumb": {
"uri": "100x100/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2",
"url_list": ["https://p3.douyinpic.com/aweme/100x100/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172", "https://p11.douyinpic.com/aweme/100x100/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172", "https://p26.douyinpic.com/aweme/100x100/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172"]
},
"avatar_medium": {
"uri": "100x100/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2",
"url_list": ["https://p3.douyinpic.com/aweme/100x100/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172", "https://p11.douyinpic.com/aweme/100x100/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172", "https://p26.douyinpic.com/aweme/100x100/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172"]
},
"follow_status": 0,
"following_count": 0,
"favoriting_count": 0,
"unique_id": "sisi2442",
"mplatform_followers_count": 0,
"followers_detail": null,
"platform_sync_info": null,
"geofencing": null,
"policy_version": null,
"sec_uid": "MS4wLjABAAAAOEQzC2nJjIS5Zq5QFgfRxxLKGODQj0Vvlz8gciLF8Tg",
"type_label": null,
"card_entries": null,
"mix_info": null
},
"music": {
"mid": "7324602840553409291",
"title": "@饭思思创作的原声一饭思思（原声中的歌曲：此生不换-Qing Niao Fei Yu）",
"author": "饭思思",
"cover_hd": {
"uri": "1080x1080/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2",
"url_list": ["https://p11.douyinpic.com/aweme/1080x1080/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172", "https://p3.douyinpic.com/aweme/1080x1080/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172", "https://p6.douyinpic.com/aweme/1080x1080/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172"]
},
"cover_large": {
"uri": "1080x1080/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2",
"url_list": ["https://p11.douyinpic.com/aweme/1080x1080/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172", "https://p3.douyinpic.com/aweme/1080x1080/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172", "https://p6.douyinpic.com/aweme/1080x1080/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172"]
},
"cover_medium": {
"uri": "720x720/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2",
"url_list": ["https://p11.douyinpic.com/aweme/720x720/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172", "https://p3.douyinpic.com/aweme/720x720/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172", "https://p26.douyinpic.com/aweme/720x720/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2.jpeg?from=116350172"]
},
"cover_thumb": {
"uri": "168x168/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2",
"url_list": ["https://p11.douyinpic.com/img/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2~c5_168x168.jpeg?from=116350172", "https://p3.douyinpic.com/img/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2~c5_168x168.jpeg?from=116350172", "https://p26.douyinpic.com/img/aweme-avatar/tos-cn-avt-0015_31b2187fc176a131cb13a70cd0a840f2~c5_168x168.jpeg?from=116350172"]
},
"duration": 30,
"position": null,
"status": 1
},
"cha_list": null,
"video": {
"play_addr": {
"uri": "v0200fg10000cmj3edbc77u6r20l0bg0",
"url_list": ["https://aweme.snssdk.com/aweme/v1/playwm/?video_id=v0200fg10000cmj3edbc77u6r20l0bg0\u0026ratio=720p\u0026line=0"]
},
"cover": {
"uri": "tos-cn-i-0813/oQAAMUHgQBALifT2L35EYfK2sc7qKBAfPEG7At",
"url_list": ["https://p3-sign.douyinpic.com/tos-cn-i-0813/oQAAMUHgQBALifT2L35EYfK2sc7qKBAfPEG7At~c5_300x400.webp?x-expires=1706662800\u0026x-signature=KDss1boVmMbpV9s1B7wXy6s0984%3D\u0026from=3213915784_large\u0026s=PackSourceEnum_DOUYIN_REFLOW\u0026se=false\u0026sc=cover\u0026biz_tag=aweme_video\u0026l=20240117093850F434F462C106845AC2B1", "https://p9-sign.douyinpic.com/tos-cn-i-0813/oQAAMUHgQBALifT2L35EYfK2sc7qKBAfPEG7At~c5_300x400.webp?x-expires=1706662800\u0026x-signature=Gm32fNnhaB%2BuHg%2FdYYtGDzaOTh8%3D\u0026from=3213915784_large\u0026s=PackSourceEnum_DOUYIN_REFLOW\u0026se=false\u0026sc=cover\u0026biz_tag=aweme_video\u0026l=20240117093850F434F462C106845AC2B1", "https://p26-sign.douyinpic.com/tos-cn-i-0813/oQAAMUHgQBALifT2L35EYfK2sc7qKBAfPEG7At~c5_300x400.webp?x-expires=1706662800\u0026x-signature=pRe9L5y22stsKjkV5kho%2BOHklXE%3D\u0026from=3213915784_large\u0026s=PackSourceEnum_DOUYIN_REFLOW\u0026se=false\u0026sc=cover\u0026biz_tag=aweme_video\u0026l=20240117093850F434F462C106845AC2B1", "https://p3-sign.douyinpic.com/tos-cn-i-0813/oQAAMUHgQBALifT2L35EYfK2sc7qKBAfPEG7At~c5_300x400.jpeg?x-expires=1706662800\u0026x-signature=cX7dhmiOZft%2BHL8bY0%2Btx%2BvziPg%3D\u0026from=3213915784_large\u0026s=PackSourceEnum_DOUYIN_REFLOW\u0026se=false\u0026sc=cover\u0026biz_tag=aweme_video\u0026l=20240117093850F434F462C106845AC2B1"]
},
"height": 1080,
"width": 1920,
"bit_rate": null
},
"statistics": {
"aweme_id": "7324602766213598501",
"comment_count": 4719,
"digg_count": 70996,
"play_count": 0,
"share_count": 4648,
"collect_count": 2021
},
"text_extra": [{
"start": 0,
"end": 5,
"type": 1,
"hashtag_name": "江西文旅",
"hashtag_id": 1641348211717134
}, {
"start": 6,
"end": 11,
"type": 1,
"hashtag_name": "庐山雪景",
"hashtag_id": 1587012021222414
}],
"video_labels": null,
"image_infos": null,
"risk_infos": {
"warn": false,
"type": 0,
"content": "",
"reflow_unplayable": 0
},
"comment_list": null,
"geofencing": null,
"video_text": null,
"label_top_text": null,
"promotions": null,
"long_video": null,
"images": null,
"group_id_str": "7317867723025960233",
"chapter_list": null,
"interaction_stickers": null,
"img_bitrate": null
}],
"filter_list": [],
"extra": {
"now": 1705455530245,
"logid": "20240117093850F434F462C106845AC2B1"
},
"status_code": 0
}可以找到video里面play_addr的uri地址为v0200fg10000cmj3edbc77u6r20l0bg0。
得到无水印视频链接
用上一步得到的uri地址，替换下面的${data.video.play_addr.uri}就可以了
https://www.iesdouyin.com/aweme/v1/play/?video_id=${data.video.play_addr.uri}&ratio=1080p&line=0
所以这个例子里面得到无水印视频下载地址为：
https://www.iesdouyin.com/aweme/v1/play/?video_id=v0200fg10000cmj3edbc77u6r20l0bg0&ratio=1080p&line=0
需要注意的是，这个uri地址是会变的，所以需要实时获取才有效。
参考链接
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