@dstftw explained in https://github.com/rg3/youtube-dl/pull/9918#issuecomment-228625878 that extractor names are supposed to be unique. @dstftw has fixed the two offending extractors, and here I add a test to ensure this does not happen in the future.
Use the HTML5 API. Only low-resolution formats available Related: #9839 Thanks @zhangn1985 for the overall algorithm (soimort/you-get#1224)
Used in IqiyiIE and LeIE
Broken: https://travis-ci.org/rg3/youtube-dl/jobs/140251658
Polskie Radio is the main Polish state-funded radio broadcasting service.
Closes #9874
Closes #9853