（1） Principle analysis of Tiktok Kwai short video watermarking

Tiktok

One , First, get a short link to share

( One ) I play 12360 He told me not to book tickets ？# Luoyang comprehensive bonded zone # # customs   https://v.douyin.com/JrA4H4N/  Copy this link , open 【 Douyin short video 】, Watch the video directly ！

Short link ： https://v.douyin.com/JrA4H4N/

Open the short link on the webpage

First Check out the elements （F12）, Adjust to mobile mode

Pictured above ,302 Redirect to a new address ：

https://www.iesdouyin.com/share/video/6861773181426994439/?region=CN&mid=6861773195499145998&u_code=42am7j519l71&titleType=title&utm_source=copy_link&utm_campaign=client_share&utm_medium=android&app=aweme

Open the link and you will get an interface data ：

https://www.iesdouyin.com/web/api/v2/aweme/iteminfo/?item_ids=6861773181426994439

item_list.video.play_addr.url_list Is the actual playback address array , Here is still watermarked , On the Internet, many bloggers write addresses with different return formats （ Such as ：aweme_detail.video.play_addr.url_list Return to this address , Say it's watermark free , Address , Blog time ： 2019-10-21 17:26:45）, It should be that Tiktok officially updated the interface .
Video address ：

https://aweme.snssdk.com/aweme/v1/playwm/?video_id=v0300f000000bssukie32o9j46e2nfbg&ratio=720p&line=0

http://v29-dy.ixigua.com/d231c702482f3882e52948826b94f7ef/5f3e4210/video/n/tosedge-tos-agsdqd-ve-0000/662e824520264f77a38002dc7eab828a/?a=1128&br=1053&bt=351&cr=0&cs=0&dr=0&ds=2&er=&l=2020082016265401019805820434075B96&lr=aweme_search_suffix&mime_type=video_mp4&qs=0&rc=amk1OW1yNmx4djMzM2kzM0ApNjZkNzNpOTs0NzxlZjk2Omdfa2IxNi9iaHBfLS0tLTBzczYzXi9eYTI1MTUyYzAyNGE6Yw%3D%3D&vl=&vr=

Say will playwm Change it to play You can see the video without watermark , Will request User-Agent Change to mobile phone

https://aweme.snssdk.com/aweme/v1/play/?video_id=v0300f000000bssukie32o9j46e2nfbg&ratio=720p&line=0

http://v26-dy.ixigua.com/d1ebc6ffc973c7d066da635b55612c01/5f3f3e89/video/tos/cn/tos-cn-ve-15/8ef10355647b4e60a7274dd1cb7059bc/?a=1128&br=1005&bt=335&cr=0&cs=0&dr=0&ds=2&er=&l=202008211024070101980662033700B66E&lr=&mime_type=video_mp4&qs=0&rc=amk1OW1yNmx4djMzM2kzM0ApO2ZoZjQ7NmQ8NzZpZjNkaWdfa2IxNi9iaHBfLS0tLTBzczIwMl41YS9eYDM2YzJgXi06Yw%3D%3D&vl=&vr=

The call frequency limit of Tiktok is exceeded , Normal interface response , But the returned data is empty