.m3u8 video downloader used to download free class on Neworiental Public Class ('新东方XDF微课堂') and possibly others.
Download .m3u8 file's associated .ts files and join them into a full.ts file.
One way to do it, is to start jupyter notebook and run all cell, it will then prompt you to input .m3u8 URL, you can either input absolute path to your .m3u8 file on your computer or the full URL link for .m3u8 file on Internet.
e.g. http://cache.gensee.com/...omitted.../2018_04_24/Hn02H1YUyp_1524567489/hls/record.m3u8
Then it will prompt you to input static part of the URL for .ts files on server (end with '/'), in most cases .ts files are in the same directory with .m3u8 file, so inoput should be the same minus .m3u8 part.
e.g. http://cache.gensee.com/...omitted.../2018_04_24/Hn02H1YUyp_1524567489/hls/
Lastly you need to input download path, if you use default path, enter 'default'. (my default download directory is /Users/simonguo/Downloads/m3u8download, you will need to change that in jupyter notebook). Or you can input you own preferable path.
Once it starts downloading, you will see something like:
When download is complete there will be a full.ts file in download directory.
You can then rename full.ts to **.mp4 (tested on mac 10.13.4, 10.13.5).
If you don't have jupyter notebook installed, well, one can always turn to good old fashion .py file.
Tested 07.16.2018 (mm/dd/yyyy), will work for videos on Zhihu.com, minor manual web sniffings required.
Step1. pick your video
Step2. inspect elements to open video URL in new Tab
Step3. web sniffing to find the .m3u8 link on Zhihu server
Step4. use the .m3u8 link to download the video in m3u8_downloader
If you already downloaded .ts files on your own, and only need to join them into one .ts file, you can rename all .ts files into numeric order (e.g. 1.ts, 2.ts, ...), then modify number '716' in join.sh to the amount of .ts files in your own case and run sh join.sh. This shell script will help you join all .ts files into one full.ts file (tested on mac 10.13.4).