[aliexpress] (direct) site support request

[2011]

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Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.07.15. If it's not read this FAQ entry and update. Issues with outdated version will be rejected.

• I've verified and I assure that I'm running youtube-dl 2017.07.15

Before submitting an issue make sure you have:

• At least skimmed through README and most notably FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones

What is the purpose of your issue?

• Bug report (encountered problems with youtube-dl)
• Site support request (request for adding support for a new site)
• Feature request (request for a new functionality)
• Question
• Other

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$ youtube-dl -v 'https://live.aliexpress.com/live/2800002758010370'
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--restrict-filenames', '-o', '%(title)s-%(id)s-%(uploader)s.%(ext)s', '-w', '-v', 'https://live.aliexpress.com/live/2800002758010370']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2017.07.15
[debug] Python version 3.4.5 - Linux-4.4.39-gentoo-x86_64-Intel-R-_Core-TM-i5_CPU_750@_2.67GHz-with-gentoo-2.3
[debug] exe versions: ffmpeg 2.8.10, ffprobe 2.8.10, rtmpdump 2.4
[debug] Proxy map: {}
[generic] 2800002758010370: Requesting header
WARNING: Falling back on generic information extractor.
[generic] 2800002758010370: Downloading webpage
[generic] 2800002758010370: Extracting information
ERROR: Unsupported URL: https://live.aliexpress.com/live/2800002758010370
Traceback (most recent call last):
File "/usr/lib64/python3.4/site-packages/youtube_dl/YoutubeDL.py", line 776, in extract_info
ie_result = ie.extract(url)
File "/usr/lib64/python3.4/site-packages/youtube_dl/extractor/common.py", line 433, in extract
ie_result = self._real_extract(url)
File "/usr/lib64/python3.4/site-packages/youtube_dl/extractor/generic.py", line 2915, in _real_extract
raise UnsupportedError(url)
youtube_dl.utils.UnsupportedError: Unsupported URL: https://live.aliexpress.com/live/2800002758010370
...

Probably a strange site request (though I am certain you have seen stranger. :)

I am actually a bit surprised that this doesn't work with the "generic" extractor.

Anyway, select a video of interest from:

https://live.aliexpress.com/activite/highlight.htm

Download fails (as shown above), but source contains a line (for example):

"replyStreamUrl": "http://aelive.alicdn.com/ae/2800002758010370_t/1500454854529.m3u8",

Running youtube-dl on THAT URL works, so most of the infrastructure for this site is already present. It is just a question of extracting the URL (and otherl listed parameters such as title and date, which are useful in creating the output file), and using that information to download the video.

[scaryspice]

I have written an extractor which solves your problem (#13707).