more robust regex extraction

[tleydxdy]

the old regex is not always matching for some of the pages

[tleydxdy]

Another problem is with the error for this case

Not a valid page, something wrong with your internet connection?

This is kinda misleading, and in the case where there isn't a live (so the page directs to the channel page) it would also trigger this error message

[sparanoid]

the old regex is not always matching for some of the pages

Thanks for the PR, can you please provide an example that only works with the new regex?

[tleydxdy]

So far all the pages I tried fails, e.g. https://www.youtube.com/channel/UCLA_DiR1FfKNvjuUpBHmylQ the main issue seems to be the variable following it is not there anymore.

[tleydxdy]

also it seems like there is this .videoDetails field in the json that has what we need, including .title .isLive and .isUpcoming (it seems like currently live ones only have .isLive where as upcoming ones only have .isUpcoming

[tleydxdy]

oh, yeah, and all the grep needs the -a flag. In my logs it seems that sometimes things gets confused for binary.