Twitch Chat Replay, only first 30 seconds get downloaded

[Gorrrg]

Make sure you are using the latest version: run youtube-dl --version and ensure your version is 2017.02.24.1. 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 Issues with outdated version will be rejected.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 2017.02.24.1

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• 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)

If the purpose of this issue is a bug report, site support request or you are not completely sure provide the full verbose output as follows:

$ youtube-dl -v --skip-download --write-sub https://www.twitch.tv/videos/124677335
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', '--skip-download', '--write-sub', 'https://www.twitch.tv/videos/124677335']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2017.02.24.1
[debug] Python version 3.4.4 - Windows-7-6.1.7601-SP1
[debug] exe versions: ffmpeg 3.2, ffprobe 3.2
[debug] Proxy map: {}
[twitch:vod] 124677335: Downloading vod info JSON
[twitch:vod] 124677335: Downloading vod access token
[twitch:vod] 124677335: Downloading m3u8 information
[info] Writing video subtitles to: LoL - H2k-Gaming vs. Hong Kong Esports - Group A Decider Game 3 - IEM Katowice 2017 [2_2]-v124677335.rechat.json
<end of log>

Description of your issue, suggested solution and other information

Only the first messages are being saved to file. According to this forum post at discuss.dev.twitch.tv the API only sends out a 30 second window after the requested timestamp.

So hundreds requests must be made, also there has to be a time delay or users might get banned from Twitch, AFAIK.

There's a python script that sucessfully downloads an entire chat replay in human readable plain text omitting the uninteresting JSON details. The developer commented in his code that he has to account for duplicate lines which will be sent when requesting the 30 second snippets, just FYI.

[Tatsh]

This is a bit out of date as apparently the host rechat.twitch.tv being used is no longer valid since at least October 2017. The API has changed completely.

PetterKraabol/Twitch-Chat-Downloader#23 (comment)

[davispuh]

So seems currently youtube-dl can't download chat for Twitch 😢

I'm getting

[info] Writing video subtitles to: v377500213.rechat.js
WARNING: Unable to download subtitle for "rechat": Unable to download webpage: <urlopen error [Errno -2] Name or service not known> (caused by URLError(gaierror(-2, 'Name or service not known'),))

[Gorrrg]

For the time being, use Twitch Chat Downloader by Petter Kraabøl: https://github.com/PetterKraabol/Twitch-Chat-Downloader

It's an extra step but it's pretty advanced and does the job.