Repository: youtube-dl
Issue: [adultswim] Livestreams
Labels: request

<!--

######################################################################
  WARNING!
  IGNORING THE FOLLOWING TEMPLATE WILL RESULT IN ISSUE CLOSED AS INCOMPLETE
######################################################################

-->


## Checklist

<!--
Carefully read and work through this check list in order to prevent the most common mistakes and misuse of youtube-dl:
- First of, make sure you are using the latest version of youtube-dl. Run `youtube-dl --version` and ensure your version is 2019.11.28. If it's not, see https://yt-dl.org/update on how to update. Issues with outdated version will be REJECTED.
- Search the bugtracker for similar feature requests: http://yt-dl.org/search-issues. DO NOT post duplicates.
- Finally, put x into all relevant boxes (like this [x])
-->

- [x] I'm reporting a feature request
- [x] I've verified that I'm running youtube-dl version **2019.11.28**
- [x] I've searched the bugtracker for similar feature requests including closed ones


## Description

<!--
Provide an explanation of your issue in an arbitrary form. Please make sure the description is worded well enough to be understood, see https://github.com/ytdl-org/youtube-dl#is-the-description-of-the-issue-itself-sufficient. Provide any additional information, suggested solution and as much context and examples as possible.
-->

Hi
it would be nice if I could download livestreams from Adult Swim.
note:
You don't need a US IP to play these livestreams.

https://www.adultswim.com/streams/rick-and-morty

the HLS Playlist looked like this for me:
https://pcva5.manifest.auditude.com/auditude/variant/as-jqX79_YeQkm3I9kHJYGAXA/c3b6d611-0c6f-4098-8678-a63dc699a665/aHR0cHM6Ly9hZHVsdHN3aW0tdm9kbGl2ZS5jZG4udHVybmVyLmNvbS9saXZlL3JpY2stYW5kLW1vcnR5L3N0cmVhbS5tM3U4P2hkbnRzPQ.m3u8?pttrackingversion=v2&ptassetid=as-jqX79_YeQkm3I9kHJYGAXA&ptdebug=false&u=ac217921a4a853e52310ebc459eef367&g=1000015&pttoken=true&z=131829&k=_fw_ae=725bd42fc9c9394e790b9a73610da431;stream=AS-desktop-streams;caid=as-jqX79_YeQkm3I9kHJYGAXA;vdur=0;_fw_ar=0;idfa=084D2F97-D6A5-41C6-90BB-4CDDE192ACBB;&ptcueformat=turner&live=true


```
.\youtube-dl.exe -F https://www.adultswim.com/streams/rick-and-morty -v
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-F', 'https://www.adultswim.com/streams/rick-and-morty', '-v']
[debug] Encodings: locale cp1252, fs mbcs, out cp850, pref cp1252
[debug] youtube-dl version 2019.11.28
[debug] Python version 3.4.4 (CPython) - Windows-10-10.0.18362
[debug] exe versions: ffmpeg git-2019-11-11-20c5f4d, ffprobe git-2019-11-11-20c5f4d
[debug] Proxy map: {}
[generic] rick-and-morty: Requesting header
WARNING: Falling back on generic information extractor.
[generic] rick-and-morty: Downloading webpage
[generic] rick-and-morty: Extracting information
[download] Downloading playlist: Rick and Morty - Adult Swim Streams
[generic] playlist Rick and Morty - Adult Swim Streams: Collected 1 video ids (downloading 1 of them)
[download] Downloading video 1 of 1
[info] Available formats for rick-and-morty:
format code  extension  resolution note
0            mp4        unknown
[download] Finished downloading playlist: Rick and Morty - Adult Swim Streams
```

Info that ffprobe got me from that playlist:
```
  Duration: N/A, start: 180.136656, bitrate: N/A
  Program 0
    Metadata:
      variant_bitrate : 1236000
    Stream #0:0: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 640x360 [SAR 1:1 DAR 16:9], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Metadata:
      variant_bitrate : 1236000
    Stream #0:1: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 1236000
  Program 1
    Metadata:
      variant_bitrate : 236000
    Stream #0:2: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 416x234 [SAR 1:1 DAR 16:9], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Metadata:
      variant_bitrate : 236000
    Stream #0:3: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 236000
  Program 2
    Metadata:
      variant_bitrate : 436000
    Stream #0:4: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 416x234 [SAR 1:1 DAR 16:9], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Metadata:
      variant_bitrate : 436000
    Stream #0:5: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 436000
  Program 3
    Metadata:
      variant_bitrate : 736000
    Stream #0:6: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 640x360 [SAR 1:1 DAR 16:9], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Metadata:
      variant_bitrate : 736000
    Stream #0:7: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 736000
  Program 4
    Metadata:
      variant_bitrate : 1736000
    Stream #0:8: Video: h264 (Constrained Baseline) ([27][0][0][0] / 0x001B), yuv420p, 852x480 [SAR 1:1 DAR 71:40], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Metadata:
      variant_bitrate : 1736000
    Stream #0:9: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 1736000
  Program 5
    Metadata:
      variant_bitrate : 2500000
    Stream #0:10: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 960x540 [SAR 1:1 DAR 16:9], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Metadata:
      variant_bitrate : 2500000
    Stream #0:11: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 2500000
  Program 6
    Metadata:
      variant_bitrate : 3500000
    Stream #0:12: Video: h264 (Main) ([27][0][0][0] / 0x001B), yuv420p, 1280x720 [SAR 1:1 DAR 16:9], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Metadata:
      variant_bitrate : 3500000
    Stream #0:13: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 3500000
  Program 7
    Metadata:
      variant_bitrate : 5000000
    Stream #0:14: Video: h264 (High) ([27][0][0][0] / 0x001B), yuv420p, 1920x1080 [SAR 1:1 DAR 16:9], Closed Captions, 29.97 fps, 29.97 tbr, 90k tbn, 59.94 tbc
    Metadata:
      variant_bitrate : 5000000
    Stream #0:15: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 5000000
  Program 8
    Metadata:
      variant_bitrate : 128000
    Stream #0:16: Audio: aac (LC) ([15][0][0][0] / 0x000F), 44100 Hz, stereo, fltp
    Metadata:
      variant_bitrate : 128000
```