Originally Posted by stngray72
Through the roku or on pc?
Uh, the answer is "yes/maybe yes" depending on what you want to do. In many cases, it is illegal.
If you are talking about broadcast TV (TV you receive using an antenna transmitting the signal from a local TV station), you can buy cheap (or not so cheap) devices that "record TV", and you can also buy USB dongles and software that allows you to do the same thing on a PC. Microsoft for years included something called "Windows Media Center" that included that capability. That software is now not offered or included offered in Windows any more, but I still use it "unofficially" on a regular basis, along with other recording devices. In the future, you may not be able to even record broadcast TV legally, and you probably will not find a device that will allow you to break the law.
That's broadcast TV. In theory, you used to be able to record cable TV, but most cable providers started scrambling even their so-called "clear" (basic cable) channels years ago, so your only reliable bet is to use the DVR provided in your cable box.
If you're talking about recording a video stream from a Roku or other similar streaming device, you are not allowed to do that, in general and specifically. There are numerous digital rights management protections in those devices that make it difficult to record video even if you crack the box open and have deep technical understanding of how to defeat the security provisions (though I know how to do it). Apparently Roku TCL TVs allow you to "chase play" recording of TV shows, but that's more of an ability to pause live TV than a useful recording. In the US, copyright laws have a overall chilling effect on offering an actual TV recording device.
So if you want to "record TV" in 2019, in most cases you need to get an antenna, and a recording device/software (Windows Media Center, iView, TIVO (they still around?), ChannelMaster DVR, etc.). Suffice it to say, you will find nothing on the US market for this purpose from Samsung, Sony, et. al. Some streaming devices DO allow you to "record" to their "cloud", but I'm not sure what the point of that is, it's just a big online cable DVR and about equally useless to me. I have recorded TV for about 15 years now, and edit the recorded files/change formats for use in my "media center" (whichever "media center" software I use), allowing me quick access to hundreds of movies, TV shows, live music concerts using my remote from my recliner whenever I want to watch something. To me, THAT'S "recording TV", but generally, the copyright holders are not entirely thrilled with that activity.