[mediaklikk] Add new extractor

[mrx23dot]

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• At least skimmed through adding new extractor tutorial and youtube-dl coding conventions sections
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What is the purpose of your pull request?

• Bug fix
• Improvement
• New extractor
• New feature

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Description of your pull request and other information

Added extractor for this site: https://mediaklikk.hu/video/kiberma-2020-04-30-i-adas/

fixes #21431

[asalamon74]

I tested it, I successfully downloaded videos from m4sport.hu.

I had to modify only one line:

_VALID_URL = r'https?://(?:www\.)?(?:mediaklikk|m4sport)\.hu/videok?/(?P<id>[^/]+)/?'

[mrx23dot]

Added m4sport support, what do I need to do with this pull request to get processed?

[pizzasok]

I also tested it, and I successfully downloaded videos from hirado.hu as well.

Like asalamon74 I had to modify only one line:

_VALID_URL = r'https?://(?:www.)?(?:mediaklikk|m4sport|hirado).hu(/\w+)*/(?P[^/]+)/?'

[pizzasok]

Also note that the video that is listed in the pull request description, and is included in mediaklikk.py as test, is no longer available. I suggest updating these to a video that is likely to be more permanently present on the site, e.g. :

https://mediaklikk.hu/adal2020/video/2020/03/07/a-dal-donto/

[pizzasok]

Thank you for including the hirado.hu fix! I created a pull request with a few minor additional edits, please accept if you agree with them. Also please update in the description of your pull request the link from https://mediaklikk.hu/video/kiberma-2020-04-30-i-adas/ to https://mediaklikk.hu/adal2020/video/2020/03/07/a-dal-donto/

[VinhoXie]

Thank you for including the hirado.hu fix! I recently found an article offering solutions to download video from mediaklikk too.