problem with this link. maybe emoji problem??

[jmliz]

• I've verified and I assure that I'm running youtube-dl 2019.03.09

Before submitting an issue make sure you have:

• At least skimmed through the README, most notably the FAQ and BUGS sections
• Searched the bugtracker for similar issues including closed ones
• Checked that provided video/audio/playlist URLs (if any) are alive and playable in a browser

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

output:

[user@pc Downloads]$ youtube-dl -v https://old.reddit.com/r/funny/comments/b0tfra/the_magical_properties_of_the_majestic_cucumber/
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-v', u'https://old.reddit.com/r/funny/comments/b0tfra/the_magical_properties_of_the_majestic_cucumber/']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2019.03.09
[debug] Python version 2.7.15 (CPython) - Linux-4.20.14-200.fc29.x86_64-x86_64-with-fedora-29-Twenty_Nine
[debug] exe versions: ffmpeg 4.0.3, ffprobe 4.0.3, phantomjs 2.1.1
[debug] Proxy map: {}
[RedditR] b0tfra: Downloading JSON metadata
[Reddit] hw1x7rcg7zl21: Downloading m3u8 information
[Reddit] hw1x7rcg7zl21: Downloading MPD manifest
[debug] Default format spec: bestvideo+bestaudio/best
[debug] Invoking downloader on u'https://v.redd.it/hw1x7rcg7zl21/HLS_270_v4.m3u8'
[download] The magical properties of the majestic cucumber 🥒-hw1x7rcg7zl21.fhls-812.mp4 has already been downloaded
[download] 100% of 3.63MiB
[debug] Invoking downloader on u'https://v.redd.it/hw1x7rcg7zl21/DASHPlaylist.mpd'
[download] The magical properties of the majestic cucumber 🥒-hw1x7rcg7zl21.fdash-AUDIO-1.m4a has already been downloaded
[download] 100% of 1.70KiB
[ffmpeg] Merging formats into "The magical properties of the majestic cucumber 🥒-hw1x7rcg7zl21.mp4"
[debug] ffmpeg command line: ffmpeg -y -loglevel 'repeat+info' -i 'file:The magical properties of the majestic cucumber 🥒-hw1x7rcg7zl21.fhls-812.mp4' -i 'file:The magical properties of the majestic cucumber 🥒-hw1x7rcg7zl21.fdash-AUDIO-1.m4a' -c copy -map '0:v:0' -map '1:a:0' 'file:The magical properties of the majestic cucumber 🥒-hw1x7rcg7zl21.temp.mp4'
ERROR: file:The magical properties of the majestic cucumber 🥒-hw1x7rcg7zl21.fdash-AUDIO-1.m4a: Invalid data found when processing input
Traceback (most recent call last):
  File "/home/user/.local/lib/python2.7/site-packages/youtube_dl/YoutubeDL.py", line 2052, in post_process
    files_to_delete, info = pp.run(info)
  File "/home/user/.local/lib/python2.7/site-packages/youtube_dl/postprocessor/ffmpeg.py", line 512, in run
    self.run_ffmpeg_multiple_files(info['__files_to_merge'], temp_filename, args)
  File "/home/user/.local/lib/python2.7/site-packages/youtube_dl/postprocessor/ffmpeg.py", line 235, in run_ffmpeg_multiple_files
    raise FFmpegPostProcessorError(msg)
FFmpegPostProcessorError: file:The magical properties of the majestic cucumber \U0001f952-hw1x7rcg7zl21.fdash-AUDIO-1.m4a: Invalid data found when processing input

Description of your issue, suggested solution and other information

Can't download https://old.reddit.com/r/funny/comments/b0tfra/the_magical_properties_of_the_majestic_cucumber/