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Hide VP9 support from YouTube

Hide VP9 support for Firefox. v0.2 2019-12-20

ئاپتورى
Jefferson Scher
بۈگۈن قاچىلانغىنى
1
جەمئىي قاچىلانغىنى
783
باھا نومۇرى
4 0 0
نەشرى
0.2
قۇرۇلغان ۋاقتى
2018-10-27
يېڭىلانغان ۋاقتى
2019-12-20
ئىجازەتنامىسى
BSD-3-Clause
قوللايدىغىنى

This script for Tampermonkey or Violentmonkey (not working in Greasemonkey) simply lies to YouTube and says that Firefox does not support the VP9 codec via MediaSource extensions.

It is uses a simplified version of the code in this extension which has more options (but also blocks VP8 which may be needed by some people):

https://addons.mozilla.org/firefox/addon/h264ify/