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hls-prefer-ffmpeg -k parameter error #12809

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opened 2026-02-21 05:32:42 -05:00 by deekerman · 1 comment

deekerman commented

2026-02-21 05:32:42 -05:00

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Originally created by @rantarou on GitHub (Feb 1, 2018).

Please follow the guide below

You will be asked some questions and requested to provide some information, please read them carefully and answer honestly
Put an x into all the boxes [ ] relevant to your issue (like this: [x])
Use the Preview tab to see what your issue will actually look like

Make sure you are using the latest version: run `youtube-dl --version` and ensure your version is 2018.01.27. 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 Issues with outdated version will be rejected.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 2018.01.27

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

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

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:

Add the -v flag to your command line you run youtube-dl with (youtube-dl -v <your command line>), copy the whole output and insert it here. It should look similar to one below (replace it with your log inserted between triple ```):

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: [u'-o', u'%(title)s.%(ext)s', u'--hls-prefer-ffmpeg', u'--prefer-ffmpeg', u'--external-downloader', u'aria2c', u'--external-downloader-args', u'-x 8 -k 1M', u'https://www3.nhk.or.jp/nhkworld/en/vod/directtalk/2058228/', u'-v']
[debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.01.27
[debug] Python version 2.7.12 (CPython) - Linux-4.13.0-32-generic-x86_64-with-Ubuntu-16.04-xenial
[debug] exe versions: avconv 3.4.1-1, avprobe 3.4.1-1, ffmpeg 3.4.1-1, ffprobe 3.4.1-1, rtmpdump 2.4
[debug] Proxy map: {}
[NhkVod] directtalk/2058228: Downloading JSON metadata
[Ooyala] JvZ2owZDE6sNXvnAlHFcCJfZewOngK1s: Downloading JSON metadata
[Ooyala] JvZ2owZDE6sNXvnAlHFcCJfZewOngK1s: Downloading JSON metadata
[Ooyala] JvZ2owZDE6sNXvnAlHFcCJfZewOngK1s: Downloading m3u8 information
[debug] Default format spec: bestvideo+bestaudio/best
[debug] Invoking downloader on u'https://player.ooyala.com/player/all/JvZ2owZDE6sNXvnAlHFcCJfZewOngK1s_1116.m3u8?secure_ios_token=NlRUb3RGSERrbkhDNEpYMVZJOENnbUR3OS9rZXM5dzZjc3lubkhyWXBiSldVSVI4Y2dmcUhhaDY3dktvCm1JZ2hiUWJJS2pmQVdIV1JDbWNmcEkxSThBPT0K'
[download] Destination: Direct Talk - At the Frontier of Embryology Magdalena Zernicka-Goetz.mp4
[debug] ffmpeg command line: ffmpeg -y -loglevel verbose -x 8 -k 1M -headers 'Accept-Language: en-us,en;q=0.5
Accept-Encoding: gzip, deflate
Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20150101 Firefox/47.0 (Chrome)
Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7
Cookie: key_auth0=Lva-IXgBrqXAE8DB1rVBhTwoToZQ1u-BoNIgpbGiNlXtulO_QnegRA91OCzDyXs7TcJC0pnap32ngPi287z8PjNERwhZ7wAR-o7BMXK0w_aZYNktPqkLBhkcROO_m0mc
' -i 'https://player.ooyala.com/player/all/JvZ2owZDE6sNXvnAlHFcCJfZewOngK1s_1116.m3u8?secure_ios_token=NlRUb3RGSERrbkhDNEpYMVZJOENnbUR3OS9rZXM5dzZjc3lubkhyWXBiSldVSVI4Y2dmcUhhaDY3dktvCm1JZ2hiUWJJS2pmQVdIV1JDbWNmcEkxSThBPT0K' -c copy -f mp4 'file:Direct Talk - At the Frontier of Embryology Magdalena Zernicka-Goetz.mp4.part'
ffmpeg version 3.4.1-1~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers
  built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.5) 20160609
  configuration: --prefix=/usr --extra-version='1~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared
  WARNING: library configuration mismatch
  avcodec     configuration: --prefix=/usr --extra-version='1~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc
  libavutil      55. 78.100 / 55. 78.100
  libavcodec     57.107.100 / 57.107.100
  libavformat    57. 83.100 / 57. 83.100
  libavdevice    57. 10.100 / 57. 10.100
  libavfilter     6.107.100 /  6.107.100
  libavresample   3.  7.  0 /  3.  7.  0
  libswscale      4.  8.100 /  4.  8.100
  libswresample   2.  9.100 /  2.  9.100
  libpostproc    54.  7.100 / 54.  7.100
Unrecognized option 'k'.
Error splitting the argument list: Option not found


ERROR: ffmpeg exited with code 1
  File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main
    "__main__", fname, loader, pkg_name)
  File "/usr/lib/python2.7/runpy.py", line 72, in _run_code
    exec code in run_globals
  File "/usr/local/bin/youtube-dl/__main__.py", line 19, in <module>
    youtube_dl.main()
  File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 465, in main
    _real_main(argv)
  File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 455, in _real_main
    retcode = ydl.download(all_urls)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1988, in download
    url, force_generic_extractor=self.params.get('force_generic_extractor', False))
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 795, in extract_info
    return self.process_ie_result(ie_result, download, extra_info)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 887, in process_ie_result
    new_result, download=download, extra_info=extra_info)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 849, in process_ie_result
    return self.process_video_result(ie_result, download=download)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1622, in process_video_result
    self.process_info(new_info)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1895, in process_info
    success = dl(filename, info_dict)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1834, in dl
    return fd.download(name, info)
  File "/usr/local/bin/youtube-dl/youtube_dl/downloader/common.py", line 361, in download
    return self.real_download(filename, info_dict)
  File "/usr/local/bin/youtube-dl/youtube_dl/downloader/external.py", line 57, in real_download
    self.get_basename(), retval))
  File "/usr/local/bin/youtube-dl/youtube_dl/downloader/common.py", line 163, in report_error
    self.ydl.report_error(*args, **kargs)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 612, in report_error
    self.trouble(error_message, tb)
  File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 574, in trouble
    tb_data = traceback.format_list(traceback.extract_stack())

If the purpose of this issue is a site support request please provide all kinds of example URLs support for which should be included (replace following example URLs by yours):

Single video: https://www3.nhk.or.jp/nhkworld/en/vod/directtalk/2058228/

Note that youtube-dl does not support sites dedicated to copyright infringement. In order for site support request to be accepted all provided example URLs should not violate any copyrights.

Description of your issue, suggested solution and other information

Explanation of your issue in arbitrary form goes here. Please make sure the description is worded well enough to be understood. Provide as much context and examples as possible.
If work on your issue requires account credentials please provide them or explain how one can obtain them.

I'm using youtube-dl version: 2018.01.27
ffmpeg: 3.4.1-1~16.04.york0
os: Ubuntu 16.04.3

when I tried to use --hls-prefer-ffmpeg it exit with error: Unrecognized option 'k'.
Error splitting the argument list: Option not found

somehow the ffmpeg arg on hls still include -k parameter which not supported in newest ffmpeg:
[debug] ffmpeg command line: ffmpeg -y -loglevel verbose -x 8 -k 1M -headers 'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7

Originally created by @rantarou on GitHub (Feb 1, 2018). ## Please follow the guide below - You will be asked some questions and requested to provide some information, please read them **carefully** and answer honestly - Put an `x` into all the boxes [ ] relevant to your *issue* (like this: `[x]`) - Use the *Preview* tab to see what your issue will actually look like --- ### Make sure you are using the *latest* version: run `youtube-dl --version` and ensure your version is *2018.01.27*. If it's not, read [this FAQ entry](https://github.com/rg3/youtube-dl/blob/master/README.md#how-do-i-update-youtube-dl) and update. Issues with outdated version will be rejected. - [x] I've **verified** and **I assure** that I'm running youtube-dl **2018.01.27** ### Before submitting an *issue* make sure you have: - [x] At least skimmed through the [README](https://github.com/rg3/youtube-dl/blob/master/README.md), **most notably** the [FAQ](https://github.com/rg3/youtube-dl#faq) and [BUGS](https://github.com/rg3/youtube-dl#bugs) sections - [x] [Searched](https://github.com/rg3/youtube-dl/search?type=Issues) the bugtracker for similar issues including closed ones ### What is the purpose of your *issue*? - [x] 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 --- --- ### 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: Add the `-v` flag to **your command line** you run youtube-dl with (`youtube-dl -v <your command line>`), copy the **whole** output and insert it here. It should look similar to one below (replace it with **your** log inserted between triple ```): ``` [debug] System config: [] [debug] User config: [] [debug] Custom config: [] [debug] Command-line args: [u'-o', u'%(title)s.%(ext)s', u'--hls-prefer-ffmpeg', u'--prefer-ffmpeg', u'--external-downloader', u'aria2c', u'--external-downloader-args', u'-x 8 -k 1M', u'https://www3.nhk.or.jp/nhkworld/en/vod/directtalk/2058228/', u'-v'] [debug] Encodings: locale UTF-8, fs UTF-8, out UTF-8, pref UTF-8 [debug] youtube-dl version 2018.01.27 [debug] Python version 2.7.12 (CPython) - Linux-4.13.0-32-generic-x86_64-with-Ubuntu-16.04-xenial [debug] exe versions: avconv 3.4.1-1, avprobe 3.4.1-1, ffmpeg 3.4.1-1, ffprobe 3.4.1-1, rtmpdump 2.4 [debug] Proxy map: {} [NhkVod] directtalk/2058228: Downloading JSON metadata [Ooyala] JvZ2owZDE6sNXvnAlHFcCJfZewOngK1s: Downloading JSON metadata [Ooyala] JvZ2owZDE6sNXvnAlHFcCJfZewOngK1s: Downloading JSON metadata [Ooyala] JvZ2owZDE6sNXvnAlHFcCJfZewOngK1s: Downloading m3u8 information [debug] Default format spec: bestvideo+bestaudio/best [debug] Invoking downloader on u'https://player.ooyala.com/player/all/JvZ2owZDE6sNXvnAlHFcCJfZewOngK1s_1116.m3u8?secure_ios_token=NlRUb3RGSERrbkhDNEpYMVZJOENnbUR3OS9rZXM5dzZjc3lubkhyWXBiSldVSVI4Y2dmcUhhaDY3dktvCm1JZ2hiUWJJS2pmQVdIV1JDbWNmcEkxSThBPT0K' [download] Destination: Direct Talk - At the Frontier of Embryology Magdalena Zernicka-Goetz.mp4 [debug] ffmpeg command line: ffmpeg -y -loglevel verbose -x 8 -k 1M -headers 'Accept-Language: en-us,en;q=0.5 Accept-Encoding: gzip, deflate Accept: text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8 User-Agent: Mozilla/5.0 (X11; Linux x86_64; rv:10.0) Gecko/20150101 Firefox/47.0 (Chrome) Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7 Cookie: key_auth0=Lva-IXgBrqXAE8DB1rVBhTwoToZQ1u-BoNIgpbGiNlXtulO_QnegRA91OCzDyXs7TcJC0pnap32ngPi287z8PjNERwhZ7wAR-o7BMXK0w_aZYNktPqkLBhkcROO_m0mc ' -i 'https://player.ooyala.com/player/all/JvZ2owZDE6sNXvnAlHFcCJfZewOngK1s_1116.m3u8?secure_ios_token=NlRUb3RGSERrbkhDNEpYMVZJOENnbUR3OS9rZXM5dzZjc3lubkhyWXBiSldVSVI4Y2dmcUhhaDY3dktvCm1JZ2hiUWJJS2pmQVdIV1JDbWNmcEkxSThBPT0K' -c copy -f mp4 'file:Direct Talk - At the Frontier of Embryology Magdalena Zernicka-Goetz.mp4.part' ffmpeg version 3.4.1-1~16.04.york0 Copyright (c) 2000-2017 the FFmpeg developers built with gcc 5.4.0 (Ubuntu 5.4.0-6ubuntu1~16.04.5) 20160609 configuration: --prefix=/usr --extra-version='1~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared WARNING: library configuration mismatch avcodec configuration: --prefix=/usr --extra-version='1~16.04.york0' --toolchain=hardened --libdir=/usr/lib/x86_64-linux-gnu --incdir=/usr/include/x86_64-linux-gnu --enable-gpl --disable-stripping --enable-avresample --enable-avisynth --enable-gnutls --enable-ladspa --enable-libass --enable-libbluray --enable-libbs2b --enable-libcaca --enable-libcdio --enable-libflite --enable-libfontconfig --enable-libfreetype --enable-libfribidi --enable-libgme --enable-libgsm --enable-libmp3lame --enable-libmysofa --enable-libopenjpeg --enable-libopenmpt --enable-libopus --enable-libpulse --enable-librubberband --enable-librsvg --enable-libshine --enable-libsnappy --enable-libsoxr --enable-libspeex --enable-libssh --enable-libtheora --enable-libtwolame --enable-libvorbis --enable-libvpx --enable-libwavpack --enable-libwebp --enable-libx265 --enable-libxml2 --enable-libxvid --enable-libzmq --enable-libzvbi --enable-omx --enable-openal --enable-opengl --enable-sdl2 --enable-libdc1394 --enable-libdrm --enable-libiec61883 --enable-chromaprint --enable-frei0r --enable-libopencv --enable-libx264 --enable-shared --enable-version3 --disable-doc --disable-programs --enable-libopencore_amrnb --enable-libopencore_amrwb --enable-libtesseract --enable-libvo_amrwbenc libavutil 55. 78.100 / 55. 78.100 libavcodec 57.107.100 / 57.107.100 libavformat 57. 83.100 / 57. 83.100 libavdevice 57. 10.100 / 57. 10.100 libavfilter 6.107.100 / 6.107.100 libavresample 3. 7. 0 / 3. 7. 0 libswscale 4. 8.100 / 4. 8.100 libswresample 2. 9.100 / 2. 9.100 libpostproc 54. 7.100 / 54. 7.100 Unrecognized option 'k'. Error splitting the argument list: Option not found ERROR: ffmpeg exited with code 1 File "/usr/lib/python2.7/runpy.py", line 174, in _run_module_as_main "__main__", fname, loader, pkg_name) File "/usr/lib/python2.7/runpy.py", line 72, in _run_code exec code in run_globals File "/usr/local/bin/youtube-dl/__main__.py", line 19, in <module> youtube_dl.main() File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 465, in main _real_main(argv) File "/usr/local/bin/youtube-dl/youtube_dl/__init__.py", line 455, in _real_main retcode = ydl.download(all_urls) File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1988, in download url, force_generic_extractor=self.params.get('force_generic_extractor', False)) File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 795, in extract_info return self.process_ie_result(ie_result, download, extra_info) File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 887, in process_ie_result new_result, download=download, extra_info=extra_info) File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 849, in process_ie_result return self.process_video_result(ie_result, download=download) File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1622, in process_video_result self.process_info(new_info) File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1895, in process_info success = dl(filename, info_dict) File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 1834, in dl return fd.download(name, info) File "/usr/local/bin/youtube-dl/youtube_dl/downloader/common.py", line 361, in download return self.real_download(filename, info_dict) File "/usr/local/bin/youtube-dl/youtube_dl/downloader/external.py", line 57, in real_download self.get_basename(), retval)) File "/usr/local/bin/youtube-dl/youtube_dl/downloader/common.py", line 163, in report_error self.ydl.report_error(*args, **kargs) File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 612, in report_error self.trouble(error_message, tb) File "/usr/local/bin/youtube-dl/youtube_dl/YoutubeDL.py", line 574, in trouble tb_data = traceback.format_list(traceback.extract_stack()) ``` --- ### If the purpose of this *issue* is a *site support request* please provide all kinds of example URLs support for which should be included (replace following example URLs by **yours**): - Single video: https://www3.nhk.or.jp/nhkworld/en/vod/directtalk/2058228/ Note that **youtube-dl does not support sites dedicated to [copyright infringement](https://github.com/rg3/youtube-dl#can-you-add-support-for-this-anime-video-site-or-site-which-shows-current-movies-for-free)**. In order for site support request to be accepted all provided example URLs should not violate any copyrights. --- ### Description of your *issue*, suggested solution and other information Explanation of your *issue* in arbitrary form goes here. Please make sure the [description is worded well enough to be understood](https://github.com/rg3/youtube-dl#is-the-description-of-the-issue-itself-sufficient). Provide as much context and examples as possible. If work on your *issue* requires account credentials please provide them or explain how one can obtain them. I'm using youtube-dl version: 2018.01.27 ffmpeg: 3.4.1-1~16.04.york0 os: Ubuntu 16.04.3 when I tried to use --hls-prefer-ffmpeg it exit with error: Unrecognized option 'k'. Error splitting the argument list: Option not found somehow the ffmpeg arg on hls still include -k parameter which not supported in newest ffmpeg: [debug] ffmpeg command line: ffmpeg -y -loglevel verbose -x 8 -k 1M -headers 'Accept-Charset: ISO-8859-1,utf-8;q=0.7,*;q=0.7

deekerman

2026-02-21 05:32:42 -05:00

closed this issue
added the
duplicate
label

deekerman commented

2026-02-21 05:32:45 -05:00

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@dstftw commented on GitHub (Feb 2, 2018):

Duplicate of #10784.

@dstftw commented on GitHub (Feb 2, 2018): Duplicate of #10784.

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starred/youtube-dl#12809

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