brightcove "forbidden by access policy", but not georestricted

[Geremia]

http://iopscience.iop.org/bookListInfo/schwalm-videos is not georestricted for me (I can watch the videos just fine in my browser), but youtube-dl cannot batch download them. I've tried supplying cookies.txt from my browser, but youtube-dl still gives the same error.

The form of the URLs for the segments of the first video of http://iopscience.iop.org/bookListInfo/schwalm-videos is:

http://f1.media.brightcove.com/3/105920850001/4666773337001/105920850001_4666773337001_s-*.ts

I passed such URLs to youtube-dl, and it can download these *.ts files. But when I pass http://iopscience.iop.org/bookListInfo/schwalm-videos, it gives this error:

[debug] System config: []
[debug] User config: []
[debug] Custom config: []
[debug] Command-line args: ['-v', 'http://iopscience.iop.org/bookListInfo/schwalm-videos']
[debug] Encodings: locale UTF-8, fs utf-8, out UTF-8, pref UTF-8
[debug] youtube-dl version 2018.02.03
[debug] Python version 3.6.4 (CPython) - Linux-4.14.16-x86_64-Intel-R-_Core-TM-_i5-2410M_CPU_@_2.30GHz-with-slackware-14.2
[debug] exe versions: ffmpeg 3.4.1, ffprobe 3.4.1, phantomjs 2.1.1, rtmpdump 2.4
[debug] Proxy map: {}
[generic] schwalm-videos: Requesting header
WARNING: Falling back on generic information extractor.
[generic] schwalm-videos: Downloading webpage
[generic] schwalm-videos: Extracting information
[download] Downloading playlist: Lectures on Selected Topics in Mathematical Physics: Elliptic Functions and Elliptic Integrals - Books - IOPscience
[generic] playlist Lectures on Selected Topics in Mathematical Physics: Elliptic Functions and Elliptic Integrals - Books - IOPscience: Collected 6 video ids (downloading 6 of them)
[download] Downloading video 1 of 6
[brightcove:new] 4666542687001: Downloading webpage
[brightcove:new] 4666542687001: Downloading JSON metadata
ERROR: Access to this resource is forbidden by access policy.
Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/common.py", line 517, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 2198, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib64/python3.6/urllib/request.py", line 532, in open
    response = meth(req, response)
  File "/usr/lib64/python3.6/urllib/request.py", line 642, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib64/python3.6/urllib/request.py", line 570, in error
    return self._call_chain(*args)
  File "/usr/lib64/python3.6/urllib/request.py", line 504, in _call_chain
    result = func(*args)
  File "/usr/lib64/python3.6/urllib/request.py", line 650, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 403: Forbidden

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/brightcove.py", line 695, in _real_extract
    'Accept': 'application/json;pk=%s' % policy_key
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/common.py", line 678, in _download_json
    encoding=encoding, data=data, headers=headers, query=query)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/common.py", line 632, in _download_webpage
    res = self._download_webpage_handle(url_or_request, video_id, note, errnote, fatal, encoding=encoding, data=data, headers=headers, query=query)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/adobepass.py", line 1332, in _download_webpage_handle
    *args, **compat_kwargs(kwargs))
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/common.py", line 537, in _download_webpage_handle
    urlh = self._request_webpage(url_or_request, video_id, note, errnote, fatal, data=data, headers=headers, query=query)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/common.py", line 526, in _request_webpage
    raise ExtractorError(errmsg, sys.exc_info()[2], cause=err)
youtube_dl.utils.ExtractorError: Unable to download JSON metadata: HTTP Error 403: Forbidden (caused by <HTTPError 403: 'Forbidden'>); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.
Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/common.py", line 517, in _request_webpage
    return self._downloader.urlopen(url_or_request)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 2198, in urlopen
    return self._opener.open(req, timeout=self._socket_timeout)
  File "/usr/lib64/python3.6/urllib/request.py", line 532, in open
    response = meth(req, response)
  File "/usr/lib64/python3.6/urllib/request.py", line 642, in http_response
    'http', request, response, code, msg, hdrs)
  File "/usr/lib64/python3.6/urllib/request.py", line 570, in error
    return self._call_chain(*args)
  File "/usr/lib64/python3.6/urllib/request.py", line 504, in _call_chain
    result = func(*args)
  File "/usr/lib64/python3.6/urllib/request.py", line 650, in http_error_default
    raise HTTPError(req.full_url, code, msg, hdrs, fp)
urllib.error.HTTPError: HTTP Error 403: Forbidden

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/brightcove.py", line 695, in _real_extract
    'Accept': 'application/json;pk=%s' % policy_key
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/common.py", line 678, in _download_json
    encoding=encoding, data=data, headers=headers, query=query)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/common.py", line 632, in _download_webpage
    res = self._download_webpage_handle(url_or_request, video_id, note, errnote, fatal, encoding=encoding, data=data, headers=headers, query=query)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/adobepass.py", line 1332, in _download_webpage_handle
    *args, **compat_kwargs(kwargs))
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/common.py", line 537, in _download_webpage_handle
    urlh = self._request_webpage(url_or_request, video_id, note, errnote, fatal, data=data, headers=headers, query=query)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/common.py", line 526, in _request_webpage
    raise ExtractorError(errmsg, sys.exc_info()[2], cause=err)
youtube_dl.utils.ExtractorError: Unable to download JSON metadata: HTTP Error 403: Forbidden (caused by <HTTPError 403: 'Forbidden'>); please report this issue on https://yt-dl.org/bug . Make sure you are using the latest version; see  https://yt-dl.org/update  on how to update. Be sure to call youtube-dl with the --verbose flag and include its complete output.

During handling of the above exception, another exception occurred:

Traceback (most recent call last):
  File "/usr/lib64/python3.6/site-packages/youtube_dl/YoutubeDL.py", line 784, in extract_info
    ie_result = ie.extract(url)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/common.py", line 438, in extract
    ie_result = self._real_extract(url)
  File "/usr/lib64/python3.6/site-packages/youtube_dl/extractor/brightcove.py", line 703, in _real_extract
    raise ExtractorError(message, expected=True)
youtube_dl.utils.ExtractorError: Access to this resource is forbidden by access policy.

[Geremia]

@dstftw I tested your patch, and it worked.
thanks for the quick fix