Reddit mentions of Portta HDMI to 1080P Component Video (YPbPr) RGB + R/L Scaler Converter Adapter with R/L Audio output Support PS3, PS4, Blu-ray Player, DVD, XBOX, Notebook , Black

Because you'd be converting Digital (HDMI) to analog (Component), you'd need a Digital to Analog converter. The TV won't have this capability built in.

You should pick up something like this to make it work.

If your TV has component video inputs then you can buy a converter and connect the stick to that.

If your TV has other HDMI ports that are in use, then an HDMI switcher may be useful.

Can get cheapish HDMI to YPbPr downscaler to like this https://www.amazon.com/Portta-Component-Converter-Scaler-support/dp/B00JVNUAEI, or can also go hunting for old pro gear like the Extron VSP series.

Ones like:

https://www.amazon.com/Portta-Component-Converter-Scaler-support/dp/B00JVNUAEI

You'll want to carefully review the feedback and Q&As, but any of them on Amazon that say HDMI to YPbPr (plus L/R audio) should be capable. So you run the HDMI cable from your computer into the HDMI input of the converter, then run component cables from that to your TV component inputs.

Gotta buy something like this. Shop around, I'm sure you can find it cheaper.

HDMI to Component. Make sure it does sound out, not just video.

https://www.amazon.com/Portta-Component-Converter-Scaler-support/dp/B00JVNUAEI

Same brand as this one.

This is what I bought. Portta HDMI to 1080P Component Video (YPbPr) RGB + R/L Scaler Converter Adapter with R/L Audio output Support PS3, PS4, Blu-ray Player, DVD, XBOX, Notebook , Black https://www.amazon.com/dp/B00JVNUAEI/ref=cm_sw_r_cp_api_i_p9gJDbA7NDTYG

It does the job and I’m happy. Also it lets you select between progressive and interlace which a lot of the others do not.

Link below is the one I bought. Like I've mentioned in other comments, sometimes there are popping sounds which do suck but for a free 65" it wasn't too much for me to get over.

Portta HDMI to 1080P Component Video (YPbPr) RGB + R/L Scaler Converter Adapter with R/L Audio output Support PS3, PS4, Blu-ray Player, DVD, XBOX, Notebook , Black https://www.amazon.com/dp/B00JVNUAEI/ref=cm_sw_r_cp_apa_i_642wDbQ4GJGAV

Ya you definitely don't want to convert all the way down to Composite if your PVM accepts component, converting HDMI to Component will give you a much better picture which is why I assume you bought the PVM in the first place yes? BTW which PVM is that? I use one of these boxes for converting my Xbox One to component to play on my XBox One on my HDM 14E5U. Its about 35$

https://www.amazon.com/gp/product/B00JVNUAEI/ref=oh_aui_detailpage_o00_s00?ie=UTF8&psc=1

You could also use one of the HDFury's but I think they all start at about 100$ for the very cheapest. Though they are a higher quality product. You do get what you pay for in this case, though for my the Portta plenty good enough and I'm pretty picky about video quality.

that has no HDCP support though. I don't know if the Chromecast has HDCP or not though.

I had a similar issue of no HDMI support on my el cheapo projector, but mine allows for a component connection via the D-sub vga connection as well, so I use one of these http://www.amazon.com/gp/product/B00JVNUAEI?psc=1&redirect=true&ref_=oh_aui_detailpage_o08_s00 to concert from HDMI to component, then just a simple adapter like this http://www.amazon.com/gp/product/B00213KFHW?keywords=component%20vga&qid=1457799452&ref_=sr_1_1&sr=8-1

My projector is only 720 though, and I can't say I really like the hdmi/component convertor... it works well enough, but has a tendency to "blip" and act like it's had it's signal reset. it usually happens quickly and you don't really miss anything, but it's just kind of annoying. I'd like to find a better solution still.

I had a HD CRT with hdmi for a few months and used a PSTV no problem with 480p & 1080i . It took a shit on me so now I have a flat screen CRT a sony. so im going to buy this box, https://www.amazon.com/Portta-Component-Converter-Scaler-support/dp/B00JVNUAEI?ref_=ast_sto_dp

I guess we'll see. It's showing up tomorrow. There are reviews for it that state that they used it to connect from PC to 480i CRTs. I've seen a few youtube videos that have shown this as well. You can use things like CRUto create custom resolutions/refresh rates but you can actually do this through the Nvidia Control Panel as well, so I'll be starting there.

There are some in-depth guides here as well, like this one.

The specific device I got is this one. I'll report back once I've had some time to mess around with it.

I'm using this: https://www.amazon.com/Portta-Component-Converter-Scaler-support/dp/B00JVNUAEI

There's a few options out there though. Whichever you choose just make sure it inputs and outputs 480i. Some only do 480p, some accept 480i but don't output it.

I was in the same situation with an older Mitsubishi TV and sadly, no, the XB1 doesn't output/input 1080i. I did find a workaround so that I wasn't stuck with 720p. It's a little device that takes 1080p HDMI input from the Xbox and then ouputs it at 1080i via component cables. It's very reasonably priced. Here's the link at Amazon: https://www.amazon.com/Portta-PETHRSP-Component-Supporting-Windows-10/dp/B00JVNUAEI