youtube-dl does not download the next format when UnicodeEncodeError: is raised

[sebma]

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Hi,

I'm using the --add-metadata option and I'm trying to download a youtube video in both webm (43) and mp4 (18) formats :

$ /usr/local/bin/youtube-dl --ignore-config -v -f 43,18 --ignore-errors --prefer-ffmpeg --restrict-filenames -o"%(playlist_title)s/%(title)s__%(format_id)s__%(id)s.%(ext)s" --add-metadata https://www.youtube.com/watch?v=kdmHbcsEJZM
[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['--ignore-config', '-v', '-f', '43,18', '--ignore-errors', '--prefer-ffmpeg', '--restrict-filenames', '-o%(playlist_title)s/%(title)s__%(format_id)s__%(id)s.%(ext)s', '--add-metadata', 'https://www.youtube.com/watch?v=kdmHbcsEJZM']
[debug] Encodings: locale ANSI_X3.4-1968, fs ascii, out ANSI_X3.4-1968, pref ANSI_X3.4-1968
[debug] youtube-dl version 2018.10.05
[debug] Python version 3.4.3 (CPython) - Linux-4.4.0-135-generic-x86_64-with-Ubuntu-14.04-trusty
[debug] exe versions: avconv 3.4.4-1, avprobe 3.4.4-1, ffmpeg 3.4.4-1, ffprobe 3.4.4-1, rtmpdump 2.4
[debug] Proxy map: {}
[youtube] kdmHbcsEJZM: Downloading webpage
[youtube] kdmHbcsEJZM: Downloading video info webpage
[info] kdmHbcsEJZM: downloading video in 2 formats
[debug] Invoking downloader on 'https://r6---sn-4gxx-25gel.googlevideo.com/videoplayback?requiressl=yes&clen=100791232&c=WEB&signature=6A11266BA8091DA89F4E32E77D28C3C5AB35BBF3.11893D1A1A4E9DD61269A747CFB2A3EA6263332D&nh=EAE%2CEAE&ipbits=0&initcwndbps=512500&mime=video%2Fwebm&itag=43&fvip=6&ratebypass=yes&sparams=clen%2Cdur%2Cei%2Cgir%2Cid%2Cinitcwndbps%2Cip%2Cipbits%2Citag%2Clmt%2Cmime%2Cmm%2Cmn%2Cms%2Cmv%2Cnh%2Cpcm2cms%2Cpl%2Cratebypass%2Crequiressl%2Csource%2Cexpire&expire=1538857137&key=yt6&gir=yes&mn=sn-4gxx-25gel%2Csn-4gxx-25gy&mm=31%2C29&mt=1538835430&id=o-ACAgUSn8wYt1DKhrrjSfczi57fdJEsM0JnOGSzW7O4m7&lmt=1473228356850694&ip=88.168.223.194&pl=23&pcm2cms=yes&dur=0.000&mv=m&source=youtube&ms=au%2Crdu&ei=UcS4W9rbD9WSxgKkh6yQDA'
[download] NA/20160906_TVB_Pearl_Pastor_Joseph_Prince__43__kdmHbcsEJZM.webm has already been downloaded
[download] 100% of 96.12MiB
[ffmpeg] Adding metadata to 'NA/20160906_TVB_Pearl_Pastor_Joseph_Prince__43__kdmHbcsEJZM.webm'
[debug] ffmpeg command line: ffmpeg -y -i file:NA/20160906_TVB_Pearl_Pastor_Joseph_Prince__43__kdmHbcsEJZM.webm -c copy -metadata date=20160906 -metadata 'purl=https://www.youtube.com/watch?v=kdmHbcsEJZM' -metadata 'title=20160906  TVB Pearl  ( / ) Pastor Joseph Prince' -metadata description= -metadata comment= -metadata 'artist=Gary Yeung' file:NA/20160906_TVB_Pearl_Pastor_Joseph_Prince__43__kdmHbcsEJZM.temp.webm
ERROR: 'ascii' codec can't encode characters in position 26-30: ordinal not in range(128)
Traceback (most recent call last):
  File "/usr/local/lib/python3.4/dist-packages/youtube_dl/YoutubeDL.py", line 803, in extract_info
    return self.process_ie_result(ie_result, download, extra_info)
  File "/usr/local/lib/python3.4/dist-packages/youtube_dl/YoutubeDL.py", line 857, in process_ie_result
    return self.process_video_result(ie_result, download=download)
  File "/usr/local/lib/python3.4/dist-packages/youtube_dl/YoutubeDL.py", line 1635, in process_video_result
    self.process_info(new_info)
  File "/usr/local/lib/python3.4/dist-packages/youtube_dl/YoutubeDL.py", line 1982, in process_info
    self.post_process(filename, info_dict)
  File "/usr/local/lib/python3.4/dist-packages/youtube_dl/YoutubeDL.py", line 2047, in post_process
    files_to_delete, info = pp.run(info)
  File "/usr/local/lib/python3.4/dist-packages/youtube_dl/postprocessor/ffmpeg.py", line 465, in run
    self.run_ffmpeg_multiple_files(in_filenames, temp_filename, options)
  File "/usr/local/lib/python3.4/dist-packages/youtube_dl/postprocessor/ffmpeg.py", line 199, in run_ffmpeg_multiple_files
    p = subprocess.Popen(cmd, stdout=subprocess.PIPE, stderr=subprocess.PIPE, stdin=subprocess.PIPE)
  File "/usr/lib/python3.4/subprocess.py", line 859, in __init__
    restore_signals, start_new_session)
  File "/usr/lib/python3.4/subprocess.py", line 1395, in _execute_child
    restore_signals, start_new_session, preexec_fn)
UnicodeEncodeError: 'ascii' codec can't encode characters in position 26-30: ordinal not in range(128)

$ echo $?
1

Can you help ?

[dstftw]

Setup UTF-8 locale.